Synthesis and Enzymatic Degradation of Nylon 66 Copolymers with Poly(Ethyleneglycol)s
| العنوان: | Synthesis and Enzymatic Degradation of Nylon 66 Copolymers with Poly(Ethyleneglycol)s |
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| المؤلفون: | Wataru Sakai, Tsuyoshi Kiyotsukuri, Atsushi Kajita, Naoto Tsutsumi, Minoru Nagata |
| المصدر: | Journal of Macromolecular Science, Part A. 33:1153-1163 |
| بيانات النشر: | Informa UK Limited, 1996. |
| سنة النشر: | 1996 |
| مصطلحات موضوعية: | Nylon 66, Materials science, Adipic acid, Polymers and Plastics, Intrinsic viscosity, technology, industry, and agriculture, macromolecular substances, General Chemistry, chemistry.chemical_compound, Crystallinity, chemistry, Hexamethylenediamine, PEG ratio, Polymer chemistry, Materials Chemistry, Ceramics and Composites, Copolymer, Ethylene glycol, Nuclear chemistry |
| الوصف: | Nylon 66 (N66) copolymers were prepared by melt polycondensation of adipic acid and hexamethylenediamine with 5–80 mol% poly(ethylene glycol) (PEG), where the molecular weight (MW) of PEG was 200–1000. The reduced specific viscosity of the copolymers was increased by the copolymerization. The crystallinity and melting temperature (T m) of N66 components decreased with increasing PEG content, but T m depression of copolymers at the same mole content decreased with increasing MW of PEG, suggesting that the copolymer structures are not of the random type but of the block type at the higher MW of PEG. The water absorption increased with increasing PEG content, and its increase was much higher at the higher MW of PEG. The enzymatic degradation was estimated by the weight loss of copolymer films in the buffer solution with and without a lipase at 37°C. The weight loss was enhanced appreciably by the presence of a lipase, and increased abruptly at higher PEG content, which was correlated to water absorp... |
| تدمد: | 1520-5738 1060-1325 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bc78b31d7328150e74ae3dbeb4cb1230 https://doi.org/10.1080/10601329608010911 |
| رقم الأكسشن: | edsair.doi...........bc78b31d7328150e74ae3dbeb4cb1230 |
| قاعدة البيانات: | OpenAIRE |
PDF full text from Publisher | تدمد: | 15205738 10601325 |
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