Synthesis and Properties of Biodegradable Poly(ester-co-carbonate) Multiblock Copolymers Comprising of Poly(butylene Succinate) and Poly(butylene Carbonate) by Chain Extension

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• 作者：Jin Wang ; Liuchun Zheng ; Chuncheng Li ; Wenxiang Zhu ; Dong Zhang ; Guohu Guan ; Yaonan Xiao
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：August 22, 2012
• 年：2012
• 卷：51
• 期：33
• 页码：10785-10792
• 全文大小：302K
• 年卷期：v.51,no.33(August 22, 2012)
• ISSN：1520-5045

文摘

A series of biodegradable poly(ester-co-carbonate) multiblock copolymers consisting of poly(butylene succinate) and poly(butylene carbonate) (PBS-b-PBC) were synthesized successfully by chain-extension reaction of dihydroxyl terminated PBS-diol prepolymer and dihydroxyl terminated PBC-diol prepolymer using hexamethylene diisocyanate (HDI) as a chain extender. The chemical structures and molecular weights of copolymers were characterized by proton nuclear magnetic resonance (¹H NMR) and gel permeation chromatography (GPC). The thermal properties, crystallization behavior, morphology and mechanical properties of PBS-b-PBC were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), phase-contrast optical microscopy (PCOM), and mechanical testing. It was found that the PBC soft segment is effective in enhancing the impact strength, while hardly decreases the melting point (T_m) of the copolymers. The resulting novel copolymers are expected to find a potential application in the area of biodegradable polymer materials.