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Hydrolytic Degradation of Aliphatic Polyesters Copolymerized with Polyethylene glycols

1997; Wiley; Volume: 42; Issue: 1 Linguagem: Inglês

10.1002/(sici)1097-0126(199701)42

1097-0126

Minoru Nagata, Tsuyoshi Kiyotsukuri, Shigeki Takeuchi, Naoto Tsutsumi, Wataru Sakai,

biodegradable polymer synthesis and properties

Polymer InternationalVolume 42, Issue 1 p. 33-38 Research Article Hydrolytic Degradation of Aliphatic Polyesters Copolymerized with Poly(ethylene glycol)s Minoru Nagata, Corresponding Author Minoru Nagata Junior Women’s College, Kyoto Prefectural University, Shimogamo, Sakyoku, Kyoto 606, JapanJunior Women’s College, Kyoto Prefectural University, Shimogamo, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorTsuyoshi Kiyotsukuri, Tsuyoshi Kiyotsukuri Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorShigeki Takeuchi, Shigeki Takeuchi Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorNaoto Tsutsumi, Naoto Tsutsumi Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorWataru Sakai, Wataru Sakai Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this author Minoru Nagata, Corresponding Author Minoru Nagata Junior Women’s College, Kyoto Prefectural University, Shimogamo, Sakyoku, Kyoto 606, JapanJunior Women’s College, Kyoto Prefectural University, Shimogamo, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorTsuyoshi Kiyotsukuri, Tsuyoshi Kiyotsukuri Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorShigeki Takeuchi, Shigeki Takeuchi Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorNaoto Tsutsumi, Naoto Tsutsumi Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this authorWataru Sakai, Wataru Sakai Department of Polymer Science and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyoku, Kyoto 606, JapanSearch for more papers by this author First published: 26 March 1999 https://doi.org/10.1002/(SICI)1097-0126(199701)42:1 3.0.CO;2-9Citations: 38AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Poly(1,4-butanediol succinate) copolymers were prepared by melt polycondensation of succinic acid and 1,4-butanediol with 10–50mol% (in feed) of poly(ethylene glycol) (PEG), where molecular weight (MW) of PEG is 200–2000. The reduced specific viscosity of the copolymers increased with incorporation of the PEG component, but a higher PEG content in the copolymers reduced it. The temperature of melting (Tm) and crystallinity decreased with increasing PEG content. Tm depression of the copolymers followed approximately Flory’s equation, suggesting that these are random type copolymers. Tensile strength and elongation decreased with increasing MW and content of PEG. The weight loss of copolymer films in a buffer solution with or without lipase at 37°C, as well as water absorption, increased with increasing PEG content, implying that higher water absorption contributes to hydrolytic degradation of the films. However, the weight loss of copolymers with PEG of lower MW increased greatly in spite of lower water absorption, demonstrating that hydrolytic degradation is influenced by the concentration of degradable ester linkages between succinic acid and PEG segments rather than water absorption. © of SCI. Citing Literature Volume42, Issue1January 1997Pages 33-38 RelatedInformation