Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers
Само за регистроване кориснике
2016
Аутори
Ponjavić, MarijanaNikolić, Marija
Jevtić, Sanja
Rogan, Jelena
Stevanović, Sanja
Đonlagić, Jasna
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Two series, one of triblock (PCL/PEO/PCL) and the other of diblock (PCL/PEO) copolymers were prepared by ring-opening polymerization of epsilon-caprolactone catalized with tin(II) octoate and by using dihydroxy or monohydroxy poly(ethylene oxide) as the macroinitiator. The PEO block length was fixed (M-n 1,000 g/mol) and the PCL block lengths (M-n 10,000-40,000 g/mol) were tailored by changing weight ratio of epsilon-CL/PEO. The copolymers' structure was confirmed by H-1 and quantitative C-13 NMR spectroscopy while their molecular weights were determined by GPC analysis. The thermal properties and the degree of crystallinity of the copolymers were investigated and compared by using DSC and WAXS. Both types of copolymers were semicrystalline with the orthorhombic PCL crystal lattice. The surface morphology of the copolymer films was investigated by using optical microscopy and AFM analysis, which confirmed the spherulitic lamellar structure with spherulites of different diameters. Data ...indicated that a low content of PEO segment had an influence on thermal degradation behavior, crystallinity and morphology of copolymers. Roughness of copolymer films was affected by the content of PEO and correlated with the spherulites' diameter. The small changes in water and moisture absorption properties of copolymers compared to homopolymer PCL were observed.
Кључне речи:
triblock copolymer / diblock copolymer / PCL/PEO/PCL / PEO/PCL / AFM analysisИзвор:
Macromolecular Research, 2016, 24, 4, 323-335Издавач:
- Springer, Dordrecht
Финансирање / пројекти:
- Синтеза и карактеризација нових функционалних полимера и полимерних нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172062)
DOI: 10.1007/s13233-016-4048-y
ISSN: 1598-5032
WoS: 000374902700005
Scopus: 2-s2.0-84964433291
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Ponjavić, Marijana AU - Nikolić, Marija AU - Jevtić, Sanja AU - Rogan, Jelena AU - Stevanović, Sanja AU - Đonlagić, Jasna PY - 2016 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3419 AB - Two series, one of triblock (PCL/PEO/PCL) and the other of diblock (PCL/PEO) copolymers were prepared by ring-opening polymerization of epsilon-caprolactone catalized with tin(II) octoate and by using dihydroxy or monohydroxy poly(ethylene oxide) as the macroinitiator. The PEO block length was fixed (M-n 1,000 g/mol) and the PCL block lengths (M-n 10,000-40,000 g/mol) were tailored by changing weight ratio of epsilon-CL/PEO. The copolymers' structure was confirmed by H-1 and quantitative C-13 NMR spectroscopy while their molecular weights were determined by GPC analysis. The thermal properties and the degree of crystallinity of the copolymers were investigated and compared by using DSC and WAXS. Both types of copolymers were semicrystalline with the orthorhombic PCL crystal lattice. The surface morphology of the copolymer films was investigated by using optical microscopy and AFM analysis, which confirmed the spherulitic lamellar structure with spherulites of different diameters. Data indicated that a low content of PEO segment had an influence on thermal degradation behavior, crystallinity and morphology of copolymers. Roughness of copolymer films was affected by the content of PEO and correlated with the spherulites' diameter. The small changes in water and moisture absorption properties of copolymers compared to homopolymer PCL were observed. PB - Springer, Dordrecht T2 - Macromolecular Research T1 - Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers EP - 335 IS - 4 SP - 323 VL - 24 DO - 10.1007/s13233-016-4048-y ER -
@article{ author = "Ponjavić, Marijana and Nikolić, Marija and Jevtić, Sanja and Rogan, Jelena and Stevanović, Sanja and Đonlagić, Jasna", year = "2016", abstract = "Two series, one of triblock (PCL/PEO/PCL) and the other of diblock (PCL/PEO) copolymers were prepared by ring-opening polymerization of epsilon-caprolactone catalized with tin(II) octoate and by using dihydroxy or monohydroxy poly(ethylene oxide) as the macroinitiator. The PEO block length was fixed (M-n 1,000 g/mol) and the PCL block lengths (M-n 10,000-40,000 g/mol) were tailored by changing weight ratio of epsilon-CL/PEO. The copolymers' structure was confirmed by H-1 and quantitative C-13 NMR spectroscopy while their molecular weights were determined by GPC analysis. The thermal properties and the degree of crystallinity of the copolymers were investigated and compared by using DSC and WAXS. Both types of copolymers were semicrystalline with the orthorhombic PCL crystal lattice. The surface morphology of the copolymer films was investigated by using optical microscopy and AFM analysis, which confirmed the spherulitic lamellar structure with spherulites of different diameters. Data indicated that a low content of PEO segment had an influence on thermal degradation behavior, crystallinity and morphology of copolymers. Roughness of copolymer films was affected by the content of PEO and correlated with the spherulites' diameter. The small changes in water and moisture absorption properties of copolymers compared to homopolymer PCL were observed.", publisher = "Springer, Dordrecht", journal = "Macromolecular Research", title = "Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers", pages = "335-323", number = "4", volume = "24", doi = "10.1007/s13233-016-4048-y" }
Ponjavić, M., Nikolić, M., Jevtić, S., Rogan, J., Stevanović, S.,& Đonlagić, J.. (2016). Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers. in Macromolecular Research Springer, Dordrecht., 24(4), 323-335. https://doi.org/10.1007/s13233-016-4048-y
Ponjavić M, Nikolić M, Jevtić S, Rogan J, Stevanović S, Đonlagić J. Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers. in Macromolecular Research. 2016;24(4):323-335. doi:10.1007/s13233-016-4048-y .
Ponjavić, Marijana, Nikolić, Marija, Jevtić, Sanja, Rogan, Jelena, Stevanović, Sanja, Đonlagić, Jasna, "Influence of a Low Content of PEO Segment on the Thermal, Surface and Morphological Properties of Triblock and Diblock PCL Copolymers" in Macromolecular Research, 24, no. 4 (2016):323-335, https://doi.org/10.1007/s13233-016-4048-y . .