摘要
以丙交酯为原料,在辛酸亚锡催化下通过开环聚合反应制得了聚左旋丙交酯(PLLA).应用差示扫描热分析(DSC)、红外光谱(IR)、核磁共振(1H-NMR)、X-射线衍射和扫描电镜(SEM)等手段分析了聚合物的结构与性能.并详细论述了丙交酯的纯度、催化剂用量、聚合温度和聚合时间对PLLA的相对分子质量的影响.
Poly(L-lactide) (PLLA) has been synthesized by ring-opening polymerization of L-lactide (L-LA) initiated with stannous octoate. The structures and properties of the polymer have been studied by differential scanning calorimetry (DSC), infrared spectroscopy (IR), nuclear magnetic resonance (1H-NMR) and X-ray diffraction. The paper studies the influences of purification of L-LA, quantity of catalyst, temperature and time of polymerization on the molecular weights (MW) of PLLA.
出处
《华南理工大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2000年第10期53-58,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
高等学校博士学科点科研基金资助项目(98056110)
广东省自然科学基金资助项目(950129)
关键词
生物降解性
聚丙交脂
开环聚合
合成
biodegradation
lactide
polylactide
ring-opening polymerization
molecular weights