摘要
为改善聚（Ｄ，Ｌ乳酸）（ＰＤＬＬＡ）的亲水性，以过氧化二苯甲酷为引发剂，四氢呋喃为溶剂，进行了 ＰＤＬＬＡ接枝乙烯基吡咯烷酮（ＶＰ）的试验．ＩＲ和１Ｈ ＮＭＲ测试结果表明：ＰＤＬＬＡ可与 ＶＰ实现接枝反应，摩尔接枝率为１．０％－１．６％．与ＰＤＬＬＡ相比，接枝产物的［η］ 值下降，但吸水率增加、接触角变小，亲水性有所改善．
In order to improve the hydrophilicity of poly ( D, L-lactic acid) (PDLLA), vinyl pyrrolidone (VP) was grafted onto PDLLA chains by free-radical polymerization with benzoyl peroxide (BPO) as initiator and tetrahydrofu- ran (THF) as solvent. JR and 1H NMR results showed that the graft copolymerization of PDLLA with VP occurred, and the graft mole ratio was about 1.0% - 1.6%. Compared with the pure PDLLA, the grafted copolymers showed higher water take-up, lower contact angle and better hydrophilicity although the intrinsic viscosity decreased.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2001年第5期62-64,共3页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省自然科学基金资助项目(970160)
