Crystallization Kinetics and Spherulitic Morphologies of Biodegradable Poly(butylene succinate-co-diethylene glycol succinate) Copolymers

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• 作者：Guang-Chen Liu ; Jian-Bing Zeng ; Cai-Li Huang ; Ling Jiao ; Xiu-Li Wang ; Yu-Zhong Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：January 30, 2013
• 年：2013
• 卷：52
• 期：4
• 页码：1591-1599
• 全文大小：559K
• 年卷期：v.52,no.4(January 30, 2013)
• ISSN：1520-5045

文摘

Poly(butylene succinate-co-diethylene glycol succinate) (P(BS-co-DEGS)) random copolymer was synthesized and characterized in a previous paper [ Ind. Eng. Chem. Res. 2012, 51, 12258鈭?2265]. In this paper, we focus on the isothermal crystallization behaviors of P(BS-co-DEGS). The isothermal crystallization kinetics, spherulitic morphology, and growth kinetics of P(BS-co-DEGS) were investigated by differential scanning calorimetry and polarized optical microscopy and compared with those of neat poly(butylene succinate) (PBS). The results suggest that the crystallization rate of P(BS-co-DEGS) was much slower than that of neat PBS and decreased with increase of DEGS content, while the crystallization mechanism remain unchanged. P(BS-co-DEGS) showed banded morphology, and the band spacing decreased with increase of DEGS content at a given supercooling. The spherulitic growth rate of P(BS-co-DEGS) decreased with increase in DEGS content. A transition from crystallization regime II to crystallization regime III occurred for all samples, and the transition shifted to lower temperatures with increase in DEGS content.