Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (04): 497-502. Previous Articles    




  1. (1郑州大学化学系 郑州 450001)
    (2中国科学院上海有机化学研究所 上海 200032)
  • 投稿日期:2010-08-15 修回日期:2010-09-20 发布日期:2010-10-25
  • 通讯作者: 马志

Synthesis and Property of Well-defined Polymethylene/Polylactide Diblock Copolymer

Li Qizheng1,2 Zhang Guoyi2 Huang Jin2 Zhao Qiaoling2 Wei Liuhe1 He Zhanhang*,1 Ma Zhi*,2   

  1. (1 Department of Chemistry, Zhengzhou University, Zhengzhou 450001)
    (2 Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032)
  • Received:2010-08-15 Revised:2010-09-20 Published:2010-10-25

Well-defined polymethylene/poly(D,L-lactide) diblock copolymers (PM-b-PLA) were synthesized via the combination of living polymerization of ylides and ring opening polymerization of D,L-lactide. The 1H NMR spectra, GPC traces and FT-IR spectra of diblock copolymers indicated the successful extension of PLA segment. The melting behavior of PM-b-PLA diblock copolymer was investigated by differential scanning calorimetry (DSC). The results indicated that the incorporation of PLA segments effectively influence the crystalline process of PM segments. Scanning electron microscopy (SEM) observation showed that PM-b-PLA can act as an efficient compatibilizer for LDPE/PLA blends. PM-b-PLA diblock copolymers can be fabricated to ordered porous films via the breath-figure (BF) method.

Key words: polyolefin, polylactide, living polymerization of ylides, ring-opening polymerization, diblock copolymer