魏真真,朱朋飞,李发学,俞建勇
WEI Zhen-zhen,ZHU Peng-fei,LI Fa-xue,YU Jian-yong

• 1:东华大学纺织学院

摘要(Abstract)：

基于生物可降解性聚酯——聚丁二酸-共-对苯二甲酸丁二醇酯(PBST),通过原位添加不同含量的丙三醇作为第四单体,制备出共聚改性的PBST共聚酯。通过核磁共振仪(NMR)、差示扫描量热仪(DSC)、广角X射线衍射仪(WAXD)及接触角测试,分别对PBST共聚酯的结构和性能进行了研究。结果表明:丙三醇的加入并没有改变PBST共聚酯的化学组成和结构;随着丙三醇含量的增加,共聚酯的玻璃化转变温度先上升后下降,而熔点是逐步降低的;改性前后和拉伸前后PBST的晶型均未发生变化,但分子结构的规整性受到破坏,且发生拉伸诱导取向;改性PBST共聚酯的亲水性能较纯PBST有明显提高。
Poly(butylene succinate-co-terephthalate)(PBST) copolyesters with a series of content of glycer-ol were successfully prepared by in situ polymerization. The effect of golycerol on structures and propertiesof PBST were characterized by nuclear magnetic resonance(1H NMR), differential scanning calorimeter(DSC), wide-angle X-ray diffraction(WAXD) and contact anglemeter, respectively. Experimental results ofNMR showed that the chemical structure of PBST modified by glycerol did not change. DSC results indicat-ed with the increase of glycerol, the glass transition temperature first increased and then decreased, whilethe melting temperature reduced gradually. The crystal structure of modified PBST was almost identical tothat of pure PBST with certain destruction of molecular regularity. The hydrophilicity was found to be im-proved obviously with the modification of glycerol.

关键词(KeyWords)： 共聚酯;聚丁二酸-共-对苯二甲酸丁二醇酯;丙三醇;热学性能;晶体结构;亲水性
copolyester,poly(butylene succinate-co-terephthalate),glycerol,thermal property,crystal structure,hydrophilicity

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 魏真真,朱朋飞,李发学,俞建勇
WEI Zhen-zhen,ZHU Peng-fei,LI Fa-xue,YU Jian-yong

DOI: 10.16090/j.cnki.hcxw.2014.03.002

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