CRYSTALLIZATION AND THERMAL PROPERTIES OF PLLA COMB POLYMER

摘要：

Poly(L-lactide) (PLLA) is a biodegradable and biocompatible thermoplastic polymer.However, PLLA suffers from the difficulty of controlled degradation based on its high crystallinity and induction of material defects, so it is necessary to modify the physical properties of the polymer. Comb polymers, also called macromolecular brushes, are receiving more and more attention.2 In this research, we focused on the the crystalline structures isothermal crystallization and melting behavior of PLLA comb polymer on PHEMA backbone. Poly(L-lactide) (PLLA) comb polymer on poly(2hydroxyethyl methacrylate) (PHEMA) backbone was prepared by a combination of atom transfer radical polymerization (ATRP) and ring-opening polymerization (ROP) (Figure 1). By1 HNMR, the average polymerization degrees of PHEMA backbone and PLLA brushes were determined to be 60 and 215, respectively. The GPC result showed that the molecular weight (Mn) of the polymer is about 79690 with a polydispersity of 1.68.

作者: Chuanzhuang Zhao Dongxia Wu Nan Huang Hanying Zhao

作者单位: Department of Chemistry,Nankai University,Tianjin 300071,China Key Laboratory of Functional Polymer Materials,Ministry of Education,Institute of Polymer Chemistry,

会议类型: 国际会议

会议名称: International Symposium on Polymer Physics(2008年国际高分子物理学术会议PP2008)

会议地点: 厦门

会议语种:英文

页码: 121-122

在线出版日期: 2008-06-08（万方平台首次上网日期，不代表论文的发表时间）