TY  - THES
AU  - Đakov, Tatjana
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=4620
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:14753/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=48697871
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4645
AB  - This Ph.D. thesis studies and experimentally examines applicability of thin polymer films as structural substitutes for crystaline Si in bimorph MEMS structures. The two shapes (bi - morph) and transient state between the ON - OFF resting positions, that such deformable MEMS structures assume, largely depend on thermo-mechanical characteristics of the structural materials, influencing response time, efficiency and delivered force and/or sensitivity. For the first time, thermal characteristics (e.g. Coefficent of Thermal Expansion (CTE)  and the Glass Transient Temperature Tg) of trully thin (2m – 10m) polyimide (PI) films have been examined and the relationship with respect to film thickness and film coating processing parameters (e.g. soft - baking and hard-baking temperature profiles) has been established. The correlations between the film thickness and respective CTEs - , as well as respective glass transition temperatures, Tgs have been experimentally established. Experimentally established thermo - mechanical characteristics of PI films were then used for software simulation, functionalisation and modelling of the next generation of bimorph microsensors and microactuators based on PI - metal and PI - PI architecture...
AB  - U okviru ove doktorske disertacije proučena je i eksperimentalno ispitana mogućnost primene tankih polimernih filmova kao zamene za silicijum kod bimorfnih MEMS struktura. Ponašanje deformabilnih bimorfnih MEMS struktura (oblik, položaj u mirovanju i u stanju pobude) veoma zavisi od termomehaničkih karakteristika samih strukturnih materijala, a koje samim tim imaju uticaja i na vreme odziva, efikasnost i primenjenu snagu i/ili osetljivost. Prvi put su u radu ispitivane toplotne karakteristike (koeficijent toplotnog širenja, , i temperatura prelaza u staklasto stanje, Tg) tankih poliimidnih filmova (2 m - 10 m) u zavisnosti od debljine filma i procesnih parametara (temperature umrežavanja, kao i temperaturnog profila koji je korišćen pri umrežavanju polimera). Na osnovu eksperimentalnih podataka izvedene su korelacije izmeĎu debljine filma i koeficijenta toplotnog širenja, , kao i temperature prelaza u staklasto stanje, Tg. Pomoću toplotnih karakteristika PI filmova izvršena je simulacija, funkcionalizacija i modelovanje nove generacije bimorfnih mikrosenzora i mikropokretača tipa metal - poliimid i poliimid - poliimid...
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - Polyimide structures for micro-electro-mechanical system (mems) - based applications.
T1  - Polimidne konzole za primenu u mikro-elektro-mehaničkim (mems) sistemima
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4645
ER  - 

@phdthesis{
author = "Đakov, Tatjana",
year = "2016",
abstract = "This Ph.D. thesis studies and experimentally examines applicability of thin polymer films as structural substitutes for crystaline Si in bimorph MEMS structures. The two shapes (bi - morph) and transient state between the ON - OFF resting positions, that such deformable MEMS structures assume, largely depend on thermo-mechanical characteristics of the structural materials, influencing response time, efficiency and delivered force and/or sensitivity. For the first time, thermal characteristics (e.g. Coefficent of Thermal Expansion (CTE)  and the Glass Transient Temperature Tg) of trully thin (2m – 10m) polyimide (PI) films have been examined and the relationship with respect to film thickness and film coating processing parameters (e.g. soft - baking and hard-baking temperature profiles) has been established. The correlations between the film thickness and respective CTEs - , as well as respective glass transition temperatures, Tgs have been experimentally established. Experimentally established thermo - mechanical characteristics of PI films were then used for software simulation, functionalisation and modelling of the next generation of bimorph microsensors and microactuators based on PI - metal and PI - PI architecture..., U okviru ove doktorske disertacije proučena je i eksperimentalno ispitana mogućnost primene tankih polimernih filmova kao zamene za silicijum kod bimorfnih MEMS struktura. Ponašanje deformabilnih bimorfnih MEMS struktura (oblik, položaj u mirovanju i u stanju pobude) veoma zavisi od termomehaničkih karakteristika samih strukturnih materijala, a koje samim tim imaju uticaja i na vreme odziva, efikasnost i primenjenu snagu i/ili osetljivost. Prvi put su u radu ispitivane toplotne karakteristike (koeficijent toplotnog širenja, , i temperatura prelaza u staklasto stanje, Tg) tankih poliimidnih filmova (2 m - 10 m) u zavisnosti od debljine filma i procesnih parametara (temperature umrežavanja, kao i temperaturnog profila koji je korišćen pri umrežavanju polimera). Na osnovu eksperimentalnih podataka izvedene su korelacije izmeĎu debljine filma i koeficijenta toplotnog širenja, , kao i temperature prelaza u staklasto stanje, Tg. Pomoću toplotnih karakteristika PI filmova izvršena je simulacija, funkcionalizacija i modelovanje nove generacije bimorfnih mikrosenzora i mikropokretača tipa metal - poliimid i poliimid - poliimid...",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "Polyimide structures for micro-electro-mechanical system (mems) - based applications., Polimidne konzole za primenu u mikro-elektro-mehaničkim (mems) sistemima",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4645"
}

Đakov, T.. (2016). Polyimide structures for micro-electro-mechanical system (mems) - based applications.. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_technorep_4645

Đakov T. Polyimide structures for micro-electro-mechanical system (mems) - based applications.. 2016;.
https://hdl.handle.net/21.15107/rcub_technorep_4645 .

Đakov, Tatjana, "Polyimide structures for micro-electro-mechanical system (mems) - based applications." (2016),
https://hdl.handle.net/21.15107/rcub_technorep_4645 .

TY  - JOUR
AU  - Đakov, Tatjana
AU  - Rajaković, Ljubinka V.
AU  - Popović, Ivanka
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3134
AB  - Polymers are very attractive as thin films in emerging reel-to-reel manufacturing or as spin coated from liquid form in a quick and low cost process in standard microfabrication processes. There is a wide selection of materials available with many different thermal, electrical, and mechanical properties. With continuous growth in consumer electronics and sensors sectors, the range of potential application fields is further diversifying and integration of MEMS modules, as well as delivering IC functionality in thin foil-like packaging with proven reliability and reduction in cost is increasingly required. Furthermore, increased volume and decentralisation of testing within medical diagnostics field worldwide (IVD Point of Care and Patient Self Testing trends) require low cost solutions for disposable test cartridges and other supporting consumables. In majority of the emerging medical applications, integrated, low cost sensors need to operate in liquid environment, often rendering the use of standard Si-based solutions inadequate and costly. Polymer-based microcantilevers, realised by standard surface microfabrication techniques, were chosen for this study as the alternative approach to Si-based MEMS. Cantilevers are well understood microstructures and so provide an excellent vehicle for assessing both thermo-mechanical properties of polymers as MEMS materials and their potential for die-level packaging and integration into miniaturized systems. Due to the nature of processes involved and their thermal budget, substitution of Si substrate with e.g. flexible substrates or polymer films is foreseen in the near future. Fabricated cantilever beams consist of various combinations of thin metal/polymer and polymer/polymer films. Polyimides, as structural material, have been selected for this study due to inherently good mechanical properties, good chemical resistance, low dielectric constant and high thermal stability.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Metal-polymer and polymer-polymer microcantilevers: promising alternative to Si-based MEMS
EP  - 8706
IS  - 11
SP  - 8698
VL  - 26
DO  - 10.1007/s10854-015-3545-7
ER  - 

@article{
author = "Đakov, Tatjana and Rajaković, Ljubinka V. and Popović, Ivanka",
year = "2015",
abstract = "Polymers are very attractive as thin films in emerging reel-to-reel manufacturing or as spin coated from liquid form in a quick and low cost process in standard microfabrication processes. There is a wide selection of materials available with many different thermal, electrical, and mechanical properties. With continuous growth in consumer electronics and sensors sectors, the range of potential application fields is further diversifying and integration of MEMS modules, as well as delivering IC functionality in thin foil-like packaging with proven reliability and reduction in cost is increasingly required. Furthermore, increased volume and decentralisation of testing within medical diagnostics field worldwide (IVD Point of Care and Patient Self Testing trends) require low cost solutions for disposable test cartridges and other supporting consumables. In majority of the emerging medical applications, integrated, low cost sensors need to operate in liquid environment, often rendering the use of standard Si-based solutions inadequate and costly. Polymer-based microcantilevers, realised by standard surface microfabrication techniques, were chosen for this study as the alternative approach to Si-based MEMS. Cantilevers are well understood microstructures and so provide an excellent vehicle for assessing both thermo-mechanical properties of polymers as MEMS materials and their potential for die-level packaging and integration into miniaturized systems. Due to the nature of processes involved and their thermal budget, substitution of Si substrate with e.g. flexible substrates or polymer films is foreseen in the near future. Fabricated cantilever beams consist of various combinations of thin metal/polymer and polymer/polymer films. Polyimides, as structural material, have been selected for this study due to inherently good mechanical properties, good chemical resistance, low dielectric constant and high thermal stability.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Metal-polymer and polymer-polymer microcantilevers: promising alternative to Si-based MEMS",
pages = "8706-8698",
number = "11",
volume = "26",
doi = "10.1007/s10854-015-3545-7"
}

Đakov, T., Rajaković, L. V.,& Popović, I.. (2015). Metal-polymer and polymer-polymer microcantilevers: promising alternative to Si-based MEMS. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 26(11), 8698-8706.
https://doi.org/10.1007/s10854-015-3545-7

Đakov T, Rajaković LV, Popović I. Metal-polymer and polymer-polymer microcantilevers: promising alternative to Si-based MEMS. in Journal of Materials Science-Materials in Electronics. 2015;26(11):8698-8706.
doi:10.1007/s10854-015-3545-7 .

Đakov, Tatjana, Rajaković, Ljubinka V., Popović, Ivanka, "Metal-polymer and polymer-polymer microcantilevers: promising alternative to Si-based MEMS" in Journal of Materials Science-Materials in Electronics, 26, no. 11 (2015):8698-8706,
https://doi.org/10.1007/s10854-015-3545-7 . .

TY  - JOUR
AU  - Đakov, Tatjana
AU  - Popović, Ivanka
AU  - Rajaković, Ljubinka V.
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2641
AB  - Micro-electro-mechanical systems (MEMS) are miniaturized devices that can sense the environment, process and analyze information, and respond with a variety of mechanical and electrical actuators. MEMS consist of mechanical elements, sensors, actuators, electrical and electronics devices on a common silicon substrate. Micro-electro-mechanical systems are becoming a vital technology for modern society. Some of the advantages of MEMS devices are: very small size, very low power consumption, low cost, easy to integrate into systems or modify, small thermal constant, high resistance to vibration, shock and radiation, batch fabricated in large arrays, improved thermal expansion tolerance. MEMS technology is increasingly penetrating into our lives and improving quality of life, similar to what we experienced in the microelectronics revolution. Commercial opportunities for MEMS are rapidly growing in broad application areas, including biomedical, telecommunication, security, entertainment, aerospace, and more in both the consumer and industrial sectors on a global scale. As a breakthrough technology, MEMS is building synergy between previously unrelated fields such as biology and microelectronics. Many new MEMS and nanotechnology applications will emerge, expanding beyond that which is currently identified or known. MEMS are definitely technology for 21st century.
AB  - Mikro-elektro-mehanički sistemi (MEMS) pripadaju minijaturnim elektromehaničkim sistemima (uređaji i strukture) koji mogu da registruju promene u okolini, da ih analiziraju i procesiraju pomoću mikroelektronike. MEMS čine mehanički elementi, senzori, pojačivači, električni i elektronski uređaji koji su smešteni na silicijumov supstrat (čip). MEMS uređaji su minijaturni (dimenzije), optimalni (energetski i ekonomski), adaptabilni (lako se integrišu u druge sisteme i lako se modifikuju), niskog koeficijenata toplotnog širenja, velike otpornosti na vibracije, udar i zračenje. Tehnologije koje se primenjuju za proizvodnju MEMS i MEMS prodiru u svakodnevni život, na sličan način kao mikroelektronika. Mogućnost šaržne proizvodnje u velikim serijama otvorila je široku, komercijalnu primenu MEMS uređaja u biomedicini, telekomunikacijama, bezbednosti i zabavi. MEMS povezuje oblasti koje nisu imale dodirne tačke kao što su biologija, mikroelektronika i nanotehnologija. MEMS se razvija u pravcima koji nadrastaju trenutna saznanja i otkrića tako da se smatra da je MEMS osnova za uređaje i tehnologije 21. veka.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Micro-electro-mechanical systems (MEMS): Technology for the 21st century
T1  - Mikro-elektro-mehanički sistemi (MEMS) - tehnologija za 21. vek
EP  - 641
IS  - 5
SP  - 629
VL  - 68
DO  - 10.2298/HEMIND131008091D
ER  - 

@article{
author = "Đakov, Tatjana and Popović, Ivanka and Rajaković, Ljubinka V.",
year = "2014",
abstract = "Micro-electro-mechanical systems (MEMS) are miniaturized devices that can sense the environment, process and analyze information, and respond with a variety of mechanical and electrical actuators. MEMS consist of mechanical elements, sensors, actuators, electrical and electronics devices on a common silicon substrate. Micro-electro-mechanical systems are becoming a vital technology for modern society. Some of the advantages of MEMS devices are: very small size, very low power consumption, low cost, easy to integrate into systems or modify, small thermal constant, high resistance to vibration, shock and radiation, batch fabricated in large arrays, improved thermal expansion tolerance. MEMS technology is increasingly penetrating into our lives and improving quality of life, similar to what we experienced in the microelectronics revolution. Commercial opportunities for MEMS are rapidly growing in broad application areas, including biomedical, telecommunication, security, entertainment, aerospace, and more in both the consumer and industrial sectors on a global scale. As a breakthrough technology, MEMS is building synergy between previously unrelated fields such as biology and microelectronics. Many new MEMS and nanotechnology applications will emerge, expanding beyond that which is currently identified or known. MEMS are definitely technology for 21st century., Mikro-elektro-mehanički sistemi (MEMS) pripadaju minijaturnim elektromehaničkim sistemima (uređaji i strukture) koji mogu da registruju promene u okolini, da ih analiziraju i procesiraju pomoću mikroelektronike. MEMS čine mehanički elementi, senzori, pojačivači, električni i elektronski uređaji koji su smešteni na silicijumov supstrat (čip). MEMS uređaji su minijaturni (dimenzije), optimalni (energetski i ekonomski), adaptabilni (lako se integrišu u druge sisteme i lako se modifikuju), niskog koeficijenata toplotnog širenja, velike otpornosti na vibracije, udar i zračenje. Tehnologije koje se primenjuju za proizvodnju MEMS i MEMS prodiru u svakodnevni život, na sličan način kao mikroelektronika. Mogućnost šaržne proizvodnje u velikim serijama otvorila je široku, komercijalnu primenu MEMS uređaja u biomedicini, telekomunikacijama, bezbednosti i zabavi. MEMS povezuje oblasti koje nisu imale dodirne tačke kao što su biologija, mikroelektronika i nanotehnologija. MEMS se razvija u pravcima koji nadrastaju trenutna saznanja i otkrića tako da se smatra da je MEMS osnova za uređaje i tehnologije 21. veka.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Micro-electro-mechanical systems (MEMS): Technology for the 21st century, Mikro-elektro-mehanički sistemi (MEMS) - tehnologija za 21. vek",
pages = "641-629",
number = "5",
volume = "68",
doi = "10.2298/HEMIND131008091D"
}

Đakov, T., Popović, I.,& Rajaković, L. V.. (2014). Micro-electro-mechanical systems (MEMS): Technology for the 21st century. in Hemijska industrija
Association of Chemical Engineers of Serbia., 68(5), 629-641.
https://doi.org/10.2298/HEMIND131008091D

Đakov T, Popović I, Rajaković LV. Micro-electro-mechanical systems (MEMS): Technology for the 21st century. in Hemijska industrija. 2014;68(5):629-641.
doi:10.2298/HEMIND131008091D .

Đakov, Tatjana, Popović, Ivanka, Rajaković, Ljubinka V., "Micro-electro-mechanical systems (MEMS): Technology for the 21st century" in Hemijska industrija, 68, no. 5 (2014):629-641,
https://doi.org/10.2298/HEMIND131008091D . .

TY  - JOUR
AU  - Damjanović-Vratnica, Biljana
AU  - Đakov, Tatjana
AU  - Suković, Danijela
AU  - Damjanović, Jovanka
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1957
AB  - Chemical composition of the essential oil of Eucalyptus globulus Labill., grown in Montenegro, was analysed by gas chromatography-mass spectrometry and its antimicrobial activity was evaluated against 17 microorganisms, including food poisoning and spoilage bacteria and human pathogens. The Eucalyptus essential oil yield was 1.8% (w/w) on the fresh weight basis, whereas the analysis resulted in the identification of a total of 11 constituents, 1.8 cineole (85.8%), alpha-pinene (7.2%), and beta-myrcene (1.5%) being the main components. Other compounds identified in the oil were beta-pinene, limonene, alpha-phellandrene, gamma-terpinene, linalool, pinocarveol, terpinen-4-ol, and alpha-terpineol. The results of the antimicrobial activity tests revealed that the essential oil of E. globulus has rather a strong antimicrobial activity, especially against Streptococcus pyogenes, Escherichia coli, Candida albicans, Staphylococcus aureus, Acinetobacter baumannii, and Klebsiella pneumoniae. Minimum inhibitory concentration revealed the lowest activity against Pseudomonas aeruginosa and Salmonela infantis (3.13 mg/ml) while the highest activity was against S. aureus, E. coli, and S. pyogenes (0.09 mg/ml).
PB  - Czech Academy Agricultural Sciences, Prague
T2  - Czech Journal of Food Sciences
T1  - Antimicrobial Effect of Essential Oil Isolated from Eucalyptus globulus Labill. from Montenegro
EP  - 284
IS  - 3
SP  - 277
VL  - 29
DO  - 10.17221/114/2009-CJFS
ER  - 

@article{
author = "Damjanović-Vratnica, Biljana and Đakov, Tatjana and Suković, Danijela and Damjanović, Jovanka",
year = "2011",
abstract = "Chemical composition of the essential oil of Eucalyptus globulus Labill., grown in Montenegro, was analysed by gas chromatography-mass spectrometry and its antimicrobial activity was evaluated against 17 microorganisms, including food poisoning and spoilage bacteria and human pathogens. The Eucalyptus essential oil yield was 1.8% (w/w) on the fresh weight basis, whereas the analysis resulted in the identification of a total of 11 constituents, 1.8 cineole (85.8%), alpha-pinene (7.2%), and beta-myrcene (1.5%) being the main components. Other compounds identified in the oil were beta-pinene, limonene, alpha-phellandrene, gamma-terpinene, linalool, pinocarveol, terpinen-4-ol, and alpha-terpineol. The results of the antimicrobial activity tests revealed that the essential oil of E. globulus has rather a strong antimicrobial activity, especially against Streptococcus pyogenes, Escherichia coli, Candida albicans, Staphylococcus aureus, Acinetobacter baumannii, and Klebsiella pneumoniae. Minimum inhibitory concentration revealed the lowest activity against Pseudomonas aeruginosa and Salmonela infantis (3.13 mg/ml) while the highest activity was against S. aureus, E. coli, and S. pyogenes (0.09 mg/ml).",
publisher = "Czech Academy Agricultural Sciences, Prague",
journal = "Czech Journal of Food Sciences",
title = "Antimicrobial Effect of Essential Oil Isolated from Eucalyptus globulus Labill. from Montenegro",
pages = "284-277",
number = "3",
volume = "29",
doi = "10.17221/114/2009-CJFS"
}

Damjanović-Vratnica, B., Đakov, T., Suković, D.,& Damjanović, J.. (2011). Antimicrobial Effect of Essential Oil Isolated from Eucalyptus globulus Labill. from Montenegro. in Czech Journal of Food Sciences
Czech Academy Agricultural Sciences, Prague., 29(3), 277-284.
https://doi.org/10.17221/114/2009-CJFS

Damjanović-Vratnica B, Đakov T, Suković D, Damjanović J. Antimicrobial Effect of Essential Oil Isolated from Eucalyptus globulus Labill. from Montenegro. in Czech Journal of Food Sciences. 2011;29(3):277-284.
doi:10.17221/114/2009-CJFS .

Damjanović-Vratnica, Biljana, Đakov, Tatjana, Suković, Danijela, Damjanović, Jovanka, "Antimicrobial Effect of Essential Oil Isolated from Eucalyptus globulus Labill. from Montenegro" in Czech Journal of Food Sciences, 29, no. 3 (2011):277-284,
https://doi.org/10.17221/114/2009-CJFS . .

TY  - JOUR
AU  - Damjanović-Vratnica, Biljana
AU  - Đakov, Tatjana
AU  - Sukoviae, Danijela
AU  - Damjanović, Jovanka
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1317
AB  - The essential oil composition of wild-growing Salvia officinalis L. (Lamiaceae) from Montenegro was analysed by GC-FID and GC-MS and its antimicrobial activity tested at different oil concentrations, Twenty-five compounds were identified in the essential oil, with major components: alpha-thujone (29.50%), camphor (22.52%) and 1,8-cineole (12.19%). The amount of several minor compounds in the essential oil was also significant: camphene (5.35%), borneol (4.43%) and limonene (4.21 %). Sixteen different microorganisms were used in this study as test organisms, including four reference ATCC strains and twelve clinically isolated strains. These included human pathogens, food poisoning and spoilage bacteria and the blastomycete opportunistic yeast Candida albicans. Results showed that the sage essential oil exhibited a significant antibacterial and antifungal activity. The most sensitive strain was Staphyloccocus aureus, and of Gram-negative species even at the lowest concentration of oil, Providencia stuartii was the most sensitive. The origin of the bacterial strain and the fact of being Gram-positive or Gram-negative appeared to have little influence on the sensitivity of the oil; in general all the bacteria, except Pseudomonas aeruginosa and Salmonella enteridis, were susceptible in various degrees,to the different concentration of sage essential oil. Noteworthy is significant activity of sage essential oil against clinically isolated bacterial strains and yeast C albicans.
PB  - Taylor & Francis Ltd, Abingdon
T2  - Journal of Essential Oil Bearing Plants
T1  - Chemical composition and antimicrobial activity of essential oil of wild-growing Salvia officinalis L. from Montenegro
EP  - 89
IS  - 1
SP  - 79
VL  - 11
DO  - 10.1080/0972060X.2008.10643602
ER  - 

@article{
author = "Damjanović-Vratnica, Biljana and Đakov, Tatjana and Sukoviae, Danijela and Damjanović, Jovanka",
year = "2008",
abstract = "The essential oil composition of wild-growing Salvia officinalis L. (Lamiaceae) from Montenegro was analysed by GC-FID and GC-MS and its antimicrobial activity tested at different oil concentrations, Twenty-five compounds were identified in the essential oil, with major components: alpha-thujone (29.50%), camphor (22.52%) and 1,8-cineole (12.19%). The amount of several minor compounds in the essential oil was also significant: camphene (5.35%), borneol (4.43%) and limonene (4.21 %). Sixteen different microorganisms were used in this study as test organisms, including four reference ATCC strains and twelve clinically isolated strains. These included human pathogens, food poisoning and spoilage bacteria and the blastomycete opportunistic yeast Candida albicans. Results showed that the sage essential oil exhibited a significant antibacterial and antifungal activity. The most sensitive strain was Staphyloccocus aureus, and of Gram-negative species even at the lowest concentration of oil, Providencia stuartii was the most sensitive. The origin of the bacterial strain and the fact of being Gram-positive or Gram-negative appeared to have little influence on the sensitivity of the oil; in general all the bacteria, except Pseudomonas aeruginosa and Salmonella enteridis, were susceptible in various degrees,to the different concentration of sage essential oil. Noteworthy is significant activity of sage essential oil against clinically isolated bacterial strains and yeast C albicans.",
publisher = "Taylor & Francis Ltd, Abingdon",
journal = "Journal of Essential Oil Bearing Plants",
title = "Chemical composition and antimicrobial activity of essential oil of wild-growing Salvia officinalis L. from Montenegro",
pages = "89-79",
number = "1",
volume = "11",
doi = "10.1080/0972060X.2008.10643602"
}

Damjanović-Vratnica, B., Đakov, T., Sukoviae, D.,& Damjanović, J.. (2008). Chemical composition and antimicrobial activity of essential oil of wild-growing Salvia officinalis L. from Montenegro. in Journal of Essential Oil Bearing Plants
Taylor & Francis Ltd, Abingdon., 11(1), 79-89.
https://doi.org/10.1080/0972060X.2008.10643602

Damjanović-Vratnica B, Đakov T, Sukoviae D, Damjanović J. Chemical composition and antimicrobial activity of essential oil of wild-growing Salvia officinalis L. from Montenegro. in Journal of Essential Oil Bearing Plants. 2008;11(1):79-89.
doi:10.1080/0972060X.2008.10643602 .

Damjanović-Vratnica, Biljana, Đakov, Tatjana, Sukoviae, Danijela, Damjanović, Jovanka, "Chemical composition and antimicrobial activity of essential oil of wild-growing Salvia officinalis L. from Montenegro" in Journal of Essential Oil Bearing Plants, 11, no. 1 (2008):79-89,
https://doi.org/10.1080/0972060X.2008.10643602 . .

TY  - JOUR
AU  - Katsikas, Lynne
AU  - Nišević, Nataša
AU  - Ignjatović, Milka
AU  - Adamović, Vladimir
AU  - Đakov, Tatjana
AU  - Popović, Ivanka
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/537
AB  - The radical polymerization of monoethyl itaconate (MEI) was investigated in bulk and in solution at 60°C using a,a'-azobisisobutyronitrile as initiator. It was established that the obtained polymer poly(monoethyl itaconate) was insoluble in its monomer, implying that the bulk polymerization of MEI was a precipitation polymerization. The polymerization kinetics of MEI were discussed and compared to the polymerization kinetics of structurally similar alkyl itaconates. The homogeneous radical polymerization of MEI in tetrahydrofuran was not possible in the whole range of monomer/solvent concentration ratios, while the polymerization of MEI in methanol was homogeneous. The chain transfer constants to THF and methanol at 60°C were determined.
AB  - Ispitana je radikalna polimerizacija monoetil itakonata (MEI) u masi i u rastvoru na 60°C koristeći a,a'-azobisizobutironitril kao inicijator. Utvrđenoje da je nastali polimer poli(monoetil itakonat) nerastvoran u svom monomeru, tako da je polimerizacija MEI u masi zapravo taložna polimerizacija. Prodiskutovana je kinetika polimerizacije MEI u masi i uporedena sa kinetikom polimerizacije srodnih alkil itakonata. Homogena radikalna polimerizacija MEI u tetrahidrofuranu nije moguća u celom rasponu odnosa koncentracija monomer/rastvarač, dok je polimerizacija MEI u metanolu homogena. Odredene su konstante prenošenja aktivnosti lanca na THF i metanol na 60°C.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Radical polymerization of monoethyl itaconate
T1  - Radikalna polimerizacija monoetil itakonata
EP  - 558
IS  - 11
SP  - 553
VL  - 57
DO  - 10.2298/HEMIND0311553K
ER  - 

@article{
author = "Katsikas, Lynne and Nišević, Nataša and Ignjatović, Milka and Adamović, Vladimir and Đakov, Tatjana and Popović, Ivanka",
year = "2003",
abstract = "The radical polymerization of monoethyl itaconate (MEI) was investigated in bulk and in solution at 60°C using a,a'-azobisisobutyronitrile as initiator. It was established that the obtained polymer poly(monoethyl itaconate) was insoluble in its monomer, implying that the bulk polymerization of MEI was a precipitation polymerization. The polymerization kinetics of MEI were discussed and compared to the polymerization kinetics of structurally similar alkyl itaconates. The homogeneous radical polymerization of MEI in tetrahydrofuran was not possible in the whole range of monomer/solvent concentration ratios, while the polymerization of MEI in methanol was homogeneous. The chain transfer constants to THF and methanol at 60°C were determined., Ispitana je radikalna polimerizacija monoetil itakonata (MEI) u masi i u rastvoru na 60°C koristeći a,a'-azobisizobutironitril kao inicijator. Utvrđenoje da je nastali polimer poli(monoetil itakonat) nerastvoran u svom monomeru, tako da je polimerizacija MEI u masi zapravo taložna polimerizacija. Prodiskutovana je kinetika polimerizacije MEI u masi i uporedena sa kinetikom polimerizacije srodnih alkil itakonata. Homogena radikalna polimerizacija MEI u tetrahidrofuranu nije moguća u celom rasponu odnosa koncentracija monomer/rastvarač, dok je polimerizacija MEI u metanolu homogena. Odredene su konstante prenošenja aktivnosti lanca na THF i metanol na 60°C.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Radical polymerization of monoethyl itaconate, Radikalna polimerizacija monoetil itakonata",
pages = "558-553",
number = "11",
volume = "57",
doi = "10.2298/HEMIND0311553K"
}

Katsikas, L., Nišević, N., Ignjatović, M., Adamović, V., Đakov, T.,& Popović, I.. (2003). Radical polymerization of monoethyl itaconate. in Hemijska industrija
Association of Chemical Engineers of Serbia., 57(11), 553-558.
https://doi.org/10.2298/HEMIND0311553K

Katsikas L, Nišević N, Ignjatović M, Adamović V, Đakov T, Popović I. Radical polymerization of monoethyl itaconate. in Hemijska industrija. 2003;57(11):553-558.
doi:10.2298/HEMIND0311553K .

Katsikas, Lynne, Nišević, Nataša, Ignjatović, Milka, Adamović, Vladimir, Đakov, Tatjana, Popović, Ivanka, "Radical polymerization of monoethyl itaconate" in Hemijska industrija, 57, no. 11 (2003):553-558,
https://doi.org/10.2298/HEMIND0311553K . .

TY  - JOUR
AU  - Đakov, Tatjana
AU  - Filipović, Jovanka M.
AU  - Petrović-Đakov, Dušanka
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/485
AB  - Synthetic fluids obtained by the copolymerization of α -olefins with alkyl esters of unsaturated carboxylic acids have a unique combination of properties of non-polar poly-a-olefins (PAOs) and polar esters in a single molecule. These compounds are characterized by superior thermal, oxidative and hydrolytic stability, miscibility with mineral and synthetic base oils solubility of additives and neutral elastomer behavior. Depending on the molar masses and comonomer ratios in the copolymer molecule, synthetic fluids with a wide range of properties are obtained. These compounds are valuable components in lubricating oil formulations for different applications.
AB  - Sintetička ulja na bazi poli(α-olefina) (PAO) ili estara karbonskih kiselina (di-estri-DE i neopoliolestri-NPE) primenjuju se najčešće kada konvencionalna mineralna ulja ne mogu da zadovolje zahteve kvaliteta. Obe navedene grupe sintetičkih fluida imaju niz prednosti u poređenju sa mineralnim uljima (visoka vrednost indeksa viskoznosti, izražena termička i oksidaciona stabilnost, mala isparljivost), ali imaju i izvesne nedostatke kao što je mala rastvorljivost aditiva (PAO) i nedovoljna hidrolitička stabilnost i interakcija sa zaptivnim materija-lima (DE I NPE). Ove mane se u značajnoj meri ublažavaju korišćenjem smeša PAO i estara. Tako se javila ideja da se sintetizuju fluidi u čijim bi se molekulima kombinovala svojstva nepolarnih PAO i polarnih estara. To su kopolimeri α-olefina i alkilestara karbonskih kiselina sa kontrolisanim sadriajem polarnih grupa, dobijeni radikalnom polimerizacijom uz peroksidne inicijatore. U zavisnosti od molske mase i odnosa komonomera, temperature, sadržaja inicijatora i načina njegovog unošenja u sistem i trajanja kopolimerizacije dobijaju se kopolimeri različitih svojstava. To su bezbojne, uljaste tečnosti širokog opsega viskoznosti i visoke vrednosti indeksa viskoznosti. Sintetizovani su kopolimeri n-butilmetakrilata i tri α-olefina (α-dodecena, α-tetradecena i α-heksadecena) uz inicijator tercijarni butilperbenzoat. Proizvodima su određene temperature stinjavanja, viskoznost na 40°C i 100°C i izračunati indeksi viskoznosti. Vrednosti navedenih parametara ukazuju na mogućnost korišćenja ovih kopolimera kao kvalitetnih komponenata mazivih ulja.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins
T1  - Sintetička maziva na bazi kopolimeran-butilmetakrilata i α-olefina
EP  - 528
IS  - 12
SP  - 526
VL  - 56
DO  - 10.2298/HEMIND0212526D
ER  - 

@article{
author = "Đakov, Tatjana and Filipović, Jovanka M. and Petrović-Đakov, Dušanka",
year = "2002",
abstract = "Synthetic fluids obtained by the copolymerization of α -olefins with alkyl esters of unsaturated carboxylic acids have a unique combination of properties of non-polar poly-a-olefins (PAOs) and polar esters in a single molecule. These compounds are characterized by superior thermal, oxidative and hydrolytic stability, miscibility with mineral and synthetic base oils solubility of additives and neutral elastomer behavior. Depending on the molar masses and comonomer ratios in the copolymer molecule, synthetic fluids with a wide range of properties are obtained. These compounds are valuable components in lubricating oil formulations for different applications., Sintetička ulja na bazi poli(α-olefina) (PAO) ili estara karbonskih kiselina (di-estri-DE i neopoliolestri-NPE) primenjuju se najčešće kada konvencionalna mineralna ulja ne mogu da zadovolje zahteve kvaliteta. Obe navedene grupe sintetičkih fluida imaju niz prednosti u poređenju sa mineralnim uljima (visoka vrednost indeksa viskoznosti, izražena termička i oksidaciona stabilnost, mala isparljivost), ali imaju i izvesne nedostatke kao što je mala rastvorljivost aditiva (PAO) i nedovoljna hidrolitička stabilnost i interakcija sa zaptivnim materija-lima (DE I NPE). Ove mane se u značajnoj meri ublažavaju korišćenjem smeša PAO i estara. Tako se javila ideja da se sintetizuju fluidi u čijim bi se molekulima kombinovala svojstva nepolarnih PAO i polarnih estara. To su kopolimeri α-olefina i alkilestara karbonskih kiselina sa kontrolisanim sadriajem polarnih grupa, dobijeni radikalnom polimerizacijom uz peroksidne inicijatore. U zavisnosti od molske mase i odnosa komonomera, temperature, sadržaja inicijatora i načina njegovog unošenja u sistem i trajanja kopolimerizacije dobijaju se kopolimeri različitih svojstava. To su bezbojne, uljaste tečnosti širokog opsega viskoznosti i visoke vrednosti indeksa viskoznosti. Sintetizovani su kopolimeri n-butilmetakrilata i tri α-olefina (α-dodecena, α-tetradecena i α-heksadecena) uz inicijator tercijarni butilperbenzoat. Proizvodima su određene temperature stinjavanja, viskoznost na 40°C i 100°C i izračunati indeksi viskoznosti. Vrednosti navedenih parametara ukazuju na mogućnost korišćenja ovih kopolimera kao kvalitetnih komponenata mazivih ulja.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins, Sintetička maziva na bazi kopolimeran-butilmetakrilata i α-olefina",
pages = "528-526",
number = "12",
volume = "56",
doi = "10.2298/HEMIND0212526D"
}

Đakov, T., Filipović, J. M.,& Petrović-Đakov, D.. (2002). Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins. in Hemijska industrija
Association of Chemical Engineers of Serbia., 56(12), 526-528.
https://doi.org/10.2298/HEMIND0212526D

Đakov T, Filipović JM, Petrović-Đakov D. Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins. in Hemijska industrija. 2002;56(12):526-528.
doi:10.2298/HEMIND0212526D .

Đakov, Tatjana, Filipović, Jovanka M., Petrović-Đakov, Dušanka, "Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins" in Hemijska industrija, 56, no. 12 (2002):526-528,
https://doi.org/10.2298/HEMIND0212526D . .

TY  - JOUR
AU  - Filipović, Jovanka M.
AU  - Katsikas, Lynne
AU  - Popović, Ivanka
AU  - Veličković, Sava
AU  - Đakov, Tatjana
AU  - Petrović-Đakov, Dušanka
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/143
AB  - The Li-, Na- and K salts of poly(itaconic acid) (PIA) were prepared by treating the polyacid with the corresponding aqueous hydroxide. The resulting polysalts were analysed by elemental analysis, FTIR spectroscopy and thermogravimetry. The results indicate that the polysalts are thermally more stable than the parent PIA, they all degrade in a similar manner and somewhat more complexly than the poly(methacrylic acid) salts.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The thermal degradation of some alkali metal salts of poly(itaconic acid)
EP  - 341
IS  - 1
SP  - 335
VL  - 49
DO  - 10.1007/BF01987455
ER  - 

@article{
author = "Filipović, Jovanka M. and Katsikas, Lynne and Popović, Ivanka and Veličković, Sava and Đakov, Tatjana and Petrović-Đakov, Dušanka",
year = "1997",
abstract = "The Li-, Na- and K salts of poly(itaconic acid) (PIA) were prepared by treating the polyacid with the corresponding aqueous hydroxide. The resulting polysalts were analysed by elemental analysis, FTIR spectroscopy and thermogravimetry. The results indicate that the polysalts are thermally more stable than the parent PIA, they all degrade in a similar manner and somewhat more complexly than the poly(methacrylic acid) salts.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The thermal degradation of some alkali metal salts of poly(itaconic acid)",
pages = "341-335",
number = "1",
volume = "49",
doi = "10.1007/BF01987455"
}

Filipović, J. M., Katsikas, L., Popović, I., Veličković, S., Đakov, T.,& Petrović-Đakov, D.. (1997). The thermal degradation of some alkali metal salts of poly(itaconic acid). in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 49(1), 335-341.
https://doi.org/10.1007/BF01987455

Filipović JM, Katsikas L, Popović I, Veličković S, Đakov T, Petrović-Đakov D. The thermal degradation of some alkali metal salts of poly(itaconic acid). in Journal of Thermal Analysis and Calorimetry. 1997;49(1):335-341.
doi:10.1007/BF01987455 .

Filipović, Jovanka M., Katsikas, Lynne, Popović, Ivanka, Veličković, Sava, Đakov, Tatjana, Petrović-Đakov, Dušanka, "The thermal degradation of some alkali metal salts of poly(itaconic acid)" in Journal of Thermal Analysis and Calorimetry, 49, no. 1 (1997):335-341,
https://doi.org/10.1007/BF01987455 . .

TY  - JOUR
AU  - Katsikas, Lynne
AU  - Đakov, Tatjana
AU  - Filipović, Jovanka M.
AU  - Veličković, Jovan S.
AU  - Popović, Ivanka
PY  - 1996
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/87
AB  - The oxidative and non-oxidative degradation of poly(di-methoxy-), poly(di-ethoxy-), poly(di-iso-propoxy-) and poly(di-n-butoxyethyl itaconate) were investigated by thermogravimetry. Characteristic degradation temperatures and apparent activation energies of degradation were determined for the non-oxidative degradation of all the investigated polymers. It was not possible to determine these characteristics in the presence of oxygen as the degradation was accompanied by a secondary exothermic reaction. Based on examination of the monomers, it is supposed that the exothermic reaction is a repolymerisation of the monomers released during the earlier stages of polymer degradation.
PB  - John Wiley & Sons Ltd, W Sussex
T2  - Journal of Thermal Analysis
T1  - Poly(dialkoxyethyl itaconates) .2. The thermal degradation of some poly(dialkoxyethyl itaconates)
EP  - 1104
IS  - 4
SP  - 1093
VL  - 47
DO  - 10.1007/BF01979450
ER  - 

@article{
author = "Katsikas, Lynne and Đakov, Tatjana and Filipović, Jovanka M. and Veličković, Jovan S. and Popović, Ivanka",
year = "1996",
abstract = "The oxidative and non-oxidative degradation of poly(di-methoxy-), poly(di-ethoxy-), poly(di-iso-propoxy-) and poly(di-n-butoxyethyl itaconate) were investigated by thermogravimetry. Characteristic degradation temperatures and apparent activation energies of degradation were determined for the non-oxidative degradation of all the investigated polymers. It was not possible to determine these characteristics in the presence of oxygen as the degradation was accompanied by a secondary exothermic reaction. Based on examination of the monomers, it is supposed that the exothermic reaction is a repolymerisation of the monomers released during the earlier stages of polymer degradation.",
publisher = "John Wiley & Sons Ltd, W Sussex",
journal = "Journal of Thermal Analysis",
title = "Poly(dialkoxyethyl itaconates) .2. The thermal degradation of some poly(dialkoxyethyl itaconates)",
pages = "1104-1093",
number = "4",
volume = "47",
doi = "10.1007/BF01979450"
}

Katsikas, L., Đakov, T., Filipović, J. M., Veličković, J. S.,& Popović, I.. (1996). Poly(dialkoxyethyl itaconates) .2. The thermal degradation of some poly(dialkoxyethyl itaconates). in Journal of Thermal Analysis
John Wiley & Sons Ltd, W Sussex., 47(4), 1093-1104.
https://doi.org/10.1007/BF01979450

Katsikas L, Đakov T, Filipović JM, Veličković JS, Popović I. Poly(dialkoxyethyl itaconates) .2. The thermal degradation of some poly(dialkoxyethyl itaconates). in Journal of Thermal Analysis. 1996;47(4):1093-1104.
doi:10.1007/BF01979450 .

Katsikas, Lynne, Đakov, Tatjana, Filipović, Jovanka M., Veličković, Jovan S., Popović, Ivanka, "Poly(dialkoxyethyl itaconates) .2. The thermal degradation of some poly(dialkoxyethyl itaconates)" in Journal of Thermal Analysis, 47, no. 4 (1996):1093-1104,
https://doi.org/10.1007/BF01979450 . .