聚乳酸基材料的共聚改性研究  

Synthesis and Modifi cation of Polylactic Acid Based Copolymer

作　　者：赵洋 代安顺 高怡馨 马可宁 Zhao Yang;Dai Anshun;Gao Yixin;Ma Ke'ning(Shaoxing University,Zhejiang,312000)

机构地区：[1]绍兴文理学院,浙江312000

出　　处：《当代化工研究》2024年第3期169-172,共4页Modern Chemical Research

摘　　要：聚乳酸(PLA)是一种生物相容性和生物可降解性的聚合物,但是由于PLA主链结构单一、质硬且脆,这些缺陷限制了其进一步的应用。本文通过共聚的方法改善聚乳酸材料的性能,以乳酸(LA)、对羟基苯丙酸(p-HPA)、苹果酸(MA)为聚合单体,异辛酸锡(Sn(Oct2))和对甲苯磺酸一水合物(p-TSA)作为催化体系,采用熔融缩聚的方式,成功合成聚乳酸共聚物。进一步通过改变聚合单体的投料比以及聚合时间可以有效调控聚合产物的结构,合成一系列具有不同支链长度和支化结构的聚乳酸共聚物。Polylactic acid(PLA)is a biocompatible and biodegradable polymer,but these defects limit its further application due to the single,hard and brittle structure of PLA backbone.In this article,the performance of polylactic acid materials was improved by copolymerization,and lactic acid(LA),p-hydroxyphenylpropionic acid(p-HPA),malic acid(MA)were used as polymeric monomers,tin isooctanoate(Sn(Oct2))and p-toluenesulfonic acid monohydrate(p-TSA)were used as catalytic systems,and polycondensation was used to successfully synthesize polylactic acid copolymers.Furthermore,by changing the feeding ratio and polymerization time of the polymeric monomer,the structure of the polymerization product can be effectively controlled,and a series of polylactic acid copolymers with different branched chain lengths and branched structures can be synthesized.

关 键 词：聚乳酸 共聚物 熔融缩聚 支化结构 结构调控 

分 类 号：TQ423.2[化学工程]