应用化学 ›› 1997, Vol. 0 ›› Issue (2): 69-71.

• 研究论文 • 上一篇    下一篇

甲基丙烯酸甲酯和长链烷基酯的嵌段共聚

戴李宗, 邹友思, 郭金泉, 潘容华   

  1. 厦门大学化学系, 厦门 361005
  • 收稿日期:1996-08-07 修回日期:1996-11-18 出版日期:1997-04-10 发布日期:1997-04-10
  • 基金资助:
    国家自然科学基金

Anionic Block Copolymerization of Methyl Methacrylate and C7~9 Methacrylate

Dai Lizong, Zou Yousi, Guo Jinquan, Pan Ronghua   

  1. Chemistry Department of Xiamen University, Xiamen 361005
  • Received:1996-08-07 Revised:1996-11-18 Published:1997-04-10 Online:1997-04-10

摘要: 嵌段共聚合能得到具微相体系的共聚物, 是高分子合成的一个重要手段. 聚甲基丙烯酸甲酯(PMMA)具有优良的光学性能, 但表现出较大的脆性, 若将其与甲基丙烯酸长链烷基酯进行嵌段共聚, 合理设计硬、软链段, 就可得到兼具优良力学性能和光学性能的共聚物.

关键词: 阴离子聚合, 甲基丙烯酸酯, 嵌段共聚合, 表征

Abstract: The anionic block copolymerization of MMA and C7~9 methacrylate(C7~9 MA)was studied using n BuLi as initiator. PC7~9 MA-b-PMMA copolymer was obtained. The influences of sequence in monomer feed, temperature, concentration of initiator and active chain length of PC7~9 MA- on block copolymerization were discussed. When T =-20℃, =(5 30±0 04)×10-2 mol/L and C7~9 MA as first monomer, PC7~9 MA- with n~1.6×104 was favorable to the copolymerization of PC7~9 MA-b-PMMA. The relative molecular mass and relative molecular mass distribution of copolymer were measured by GPC. The structure of block copolymer was characterized by FTIR and 1H NMR.

Key words: anionic polymerization, methacrylate, block copolymerization, characterization