采用三甲基硅烷基(TMS)保护淀粉作为大分子引发剂,辛酸亚锡催化,制备聚乳酸与淀粉的接枝共聚物.红外光谱和核磁共振氢谱分析证实了共聚物的形成.接触角测试结果表明亲水性糖基的引入使共聚物具有较好的亲水性.在pH=7.2的PBS缓冲液中,共聚物膜能较快降解,6d后失重率接近50%,10d后完全降解.对聚乳酸进行糖基化改性,将大大拓展聚乳酸类材料在生物医学领域的应用范围.
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