TY  - JOUR
AU  - Dimić-Mišić, Katarina
AU  - Imani, Monireh
AU  - Barać, Nemanja
AU  - Janaćković, Đorđe
AU  - Uskoković, Petar
AU  - Barcelo, Ernest
AU  - Gane, Patrick
PY  - 2023
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6028
AB  - Unlike established coating formulations, functional particulate coatings often demand the omission of polymer dispersant so as to retain surface functionality. This results in heterogeneous complex rheology. We take an example from a novel development for an NOx mitigation surface flow filter system, in which ground calcium carbonate (GCC), applied in a coating, reacts with NO2 releasing CO2. Inclusion of mesoporous ancillary mineral acts to capture the CO2. The coating is applied as droplets to maximize gas-contact dynamic by forming a pixelated 2D array using a coating device consisting of protruding pins, which are loaded by submersion in the aqueous coating color such that the adhering droplets are transferred onto the substrate. The flow is driven by surface meniscus wetting causing lateral spread and bulk pore permeation. Filamentation occurs during the retraction of the pins. Stress-related viscoelastic and induced dilatancy in the suspension containing the ancillary mesoporous mineral disrupts processability. Adopting shear, oscillation and extensional rheometric methods, we show that the inclusion of an ancillary mineral that alone absorbs water, e.g., perlite (a naturally occurring porous volcanic glass), is rheologically preferable to one that in addition to absorbing water also immobilizes it on the mineral surface, e.g., sepiolite. When including micro-nanofibrillated cellulose (MNFC), critical for maintaining moisture to support NO2 sorption, it is observed that it acts also as a flow modifier, enabling uniform coating transfer to be achieved, thus eliminating any possible detrimental effect on mineral surface activity by avoiding the use of soluble polymeric dispersant.
PB  - MDPI
T2  - Materials
T1  - Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer
IS  - 4
SP  - 1598
VL  - 16
DO  - 10.3390/ma16041598
ER  - 

@article{
author = "Dimić-Mišić, Katarina and Imani, Monireh and Barać, Nemanja and Janaćković, Đorđe and Uskoković, Petar and Barcelo, Ernest and Gane, Patrick",
year = "2023",
abstract = "Unlike established coating formulations, functional particulate coatings often demand the omission of polymer dispersant so as to retain surface functionality. This results in heterogeneous complex rheology. We take an example from a novel development for an NOx mitigation surface flow filter system, in which ground calcium carbonate (GCC), applied in a coating, reacts with NO2 releasing CO2. Inclusion of mesoporous ancillary mineral acts to capture the CO2. The coating is applied as droplets to maximize gas-contact dynamic by forming a pixelated 2D array using a coating device consisting of protruding pins, which are loaded by submersion in the aqueous coating color such that the adhering droplets are transferred onto the substrate. The flow is driven by surface meniscus wetting causing lateral spread and bulk pore permeation. Filamentation occurs during the retraction of the pins. Stress-related viscoelastic and induced dilatancy in the suspension containing the ancillary mesoporous mineral disrupts processability. Adopting shear, oscillation and extensional rheometric methods, we show that the inclusion of an ancillary mineral that alone absorbs water, e.g., perlite (a naturally occurring porous volcanic glass), is rheologically preferable to one that in addition to absorbing water also immobilizes it on the mineral surface, e.g., sepiolite. When including micro-nanofibrillated cellulose (MNFC), critical for maintaining moisture to support NO2 sorption, it is observed that it acts also as a flow modifier, enabling uniform coating transfer to be achieved, thus eliminating any possible detrimental effect on mineral surface activity by avoiding the use of soluble polymeric dispersant.",
publisher = "MDPI",
journal = "Materials",
title = "Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer",
number = "4",
pages = "1598",
volume = "16",
doi = "10.3390/ma16041598"
}

Dimić-Mišić, K., Imani, M., Barać, N., Janaćković, Đ., Uskoković, P., Barcelo, E.,& Gane, P.. (2023). Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer. in Materials
MDPI., 16(4), 1598.
https://doi.org/10.3390/ma16041598

Dimić-Mišić K, Imani M, Barać N, Janaćković Đ, Uskoković P, Barcelo E, Gane P. Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer. in Materials. 2023;16(4):1598.
doi:10.3390/ma16041598 .

Dimić-Mišić, Katarina, Imani, Monireh, Barać, Nemanja, Janaćković, Đorđe, Uskoković, Petar, Barcelo, Ernest, Gane, Patrick, "Micro Nanofibrillated Cellulose as Functional Additive Supporting Processability of Surface-Active Mineral Suspensions: Exemplified by Pixel Coating of an NOx-Sorbent Layer" in Materials, 16, no. 4 (2023):1598,
https://doi.org/10.3390/ma16041598 . .

TY  - CONF
AU  - Ivanovska, Aleksandra
AU  - Barać, Nemanja
AU  - Radojević, Vesna
AU  - Uskoković, Petar
AU  - Janaćković, Đorđe
AU  - Barcelo, Ernest
AU  - Gane, Patrick
AU  - Kostić, Mirjana
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6821
AB  - Cellulose and cellulose-CaCO3 dopes were prepared by ultrasound dispersion of CaCO3 (0, 0.26,
or 0.65 w/w%) and dissolution of cellulose (13 w/w%) in ionic liquid 1-ethyl-3-
methylimidazolium acetate at 90 °C. Thereafter, the films were obtained by rode casting over a
pre-heated glass plate, together with methanol used as a regeneration agent. Subsequently, the
films were washed in hot water (80 °C) to remove the residual ionic liquid solvent - a process that
can be extended to recover ionic liquid for re-use. To impart antimicrobial properties to the
cellulose-CaCO3 composite films, selected samples of the wet films were treated with 10 mM
CuSO4 solution for different times (30, 60, and 120 min). Furthermore, half of these CuSO4 treated
films were subsequently treated with ascorbic acid to synthesise in situ Cu-based nanoparticles on
the film surface. After drying whilst held under tension at room temperature, the films were
characterised in respect to their mechanical properties as well as antimicrobial activity. The results
revealed that, in the case of films treated for 30 min with CuSO4 solution, the incorporation of
0.26 w/w% CaCO3 correlated with an increase in the film hardness, while in the case where the
treatment with CuSO4 solution was performed for longer (60 min) this hardness trend was
reversed. The elastic modulus decreased with increasing content of CaCO3. Only the films treated
with CuSO4, and those with Cu-based nanoparticles, possessed excellent antimicrobial activity
against the bacteria E. coli, S. aureus, and the fungus C. albicans. However, the results in the case
of C. albicans, showed an additional dependence, in that films treated with CuSO4 solution for 60
min demonstrated increasing antimicrobial activity against the fungus specifically with increasing
CaCO3 content.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
T1  - Obtaining and characterising Cu-infused antimicrobial films formed from regenerated cellulose-CaCO3 composite
SP  - 90
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6821
ER  - 

@conference{
author = "Ivanovska, Aleksandra and Barać, Nemanja and Radojević, Vesna and Uskoković, Petar and Janaćković, Đorđe and Barcelo, Ernest and Gane, Patrick and Kostić, Mirjana",
year = "2022",
abstract = "Cellulose and cellulose-CaCO3 dopes were prepared by ultrasound dispersion of CaCO3 (0, 0.26,
or 0.65 w/w%) and dissolution of cellulose (13 w/w%) in ionic liquid 1-ethyl-3-
methylimidazolium acetate at 90 °C. Thereafter, the films were obtained by rode casting over a
pre-heated glass plate, together with methanol used as a regeneration agent. Subsequently, the
films were washed in hot water (80 °C) to remove the residual ionic liquid solvent - a process that
can be extended to recover ionic liquid for re-use. To impart antimicrobial properties to the
cellulose-CaCO3 composite films, selected samples of the wet films were treated with 10 mM
CuSO4 solution for different times (30, 60, and 120 min). Furthermore, half of these CuSO4 treated
films were subsequently treated with ascorbic acid to synthesise in situ Cu-based nanoparticles on
the film surface. After drying whilst held under tension at room temperature, the films were
characterised in respect to their mechanical properties as well as antimicrobial activity. The results
revealed that, in the case of films treated for 30 min with CuSO4 solution, the incorporation of
0.26 w/w% CaCO3 correlated with an increase in the film hardness, while in the case where the
treatment with CuSO4 solution was performed for longer (60 min) this hardness trend was
reversed. The elastic modulus decreased with increasing content of CaCO3. Only the films treated
with CuSO4, and those with Cu-based nanoparticles, possessed excellent antimicrobial activity
against the bacteria E. coli, S. aureus, and the fungus C. albicans. However, the results in the case
of C. albicans, showed an additional dependence, in that films treated with CuSO4 solution for 60
min demonstrated increasing antimicrobial activity against the fungus specifically with increasing
CaCO3 content.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022",
title = "Obtaining and characterising Cu-infused antimicrobial films formed from regenerated cellulose-CaCO3 composite",
pages = "90",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6821"
}

Ivanovska, A., Barać, N., Radojević, V., Uskoković, P., Janaćković, Đ., Barcelo, E., Gane, P.,& Kostić, M.. (2022). Obtaining and characterising Cu-infused antimicrobial films formed from regenerated cellulose-CaCO3 composite. in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
Belgrade : Materials Research Society of Serbia., 90.
https://hdl.handle.net/21.15107/rcub_technorep_6821

Ivanovska A, Barać N, Radojević V, Uskoković P, Janaćković Đ, Barcelo E, Gane P, Kostić M. Obtaining and characterising Cu-infused antimicrobial films formed from regenerated cellulose-CaCO3 composite. in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022. 2022;:90.
https://hdl.handle.net/21.15107/rcub_technorep_6821 .

Ivanovska, Aleksandra, Barać, Nemanja, Radojević, Vesna, Uskoković, Petar, Janaćković, Đorđe, Barcelo, Ernest, Gane, Patrick, Kostić, Mirjana, "Obtaining and characterising Cu-infused antimicrobial films formed from regenerated cellulose-CaCO3 composite" in Programme and The Book of Abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022 (2022):90,
https://hdl.handle.net/21.15107/rcub_technorep_6821 .