摘要
研究了在聚乙二醇(PEG)存在下,淀粉与丙交酯的原位熔融接枝反应。较系统地考察了PEG的加入量及分子量的变化对淀粉-聚乳酸原位熔融接枝反应的影响。结果表明,当有PEG存在时,丙交酯可以有效地接枝到淀粉链上,得到淀粉-聚乳酸接枝共聚物。PEG对淀粉的增塑效果是影响淀粉与丙交酯熔融接枝反应至关重要的因素。
The in situ graft copolymerization of starch with D,L-lactide was investigated. It is found that lactide can be grafted onto starch via ring-opening polymerization in the presence of poly(ethylene glycol) (PEG), resulting starch-PLA graft copolymers. Increasing the amount of PEG to the reacting system results in the increase of the grafting of PLA onto starch, and the molecular weight of PEG plays a prominent role in affecting PLA grafting.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第4期73-76,共4页
Polymer Materials Science & Engineering
基金
浙江省科技计划重点项目资助
关键词
淀粉
聚乙二醇
聚乳酸
接枝共聚
starch
poly (lactic acid)
poly (ethylene glycol)
graft copolymerization
