甲基丙烯酸酯嵌段共聚物的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF BLOCKCOPOLYMERIZATION OF METHACRYLATE

作　　者：戴李宗[1] 邹友思[1] 郑洪涛 林国良 潘容华[1] 

机构地区：[1]厦门大学化学系

出　　处：《高分子材料科学与工程》1998年第4期34-36,共3页Polymer Materials Science & Engineering

基　　金：国家自然科学基金

摘　　要：研究了ＭＭＡ和Ｃ７～９ＭＡ的阴离子共聚合，得到了Ａ－Ｂ型嵌段共聚物。讨论了嵌段顺序、温度、引发剂及ＰＣ７～９ＭＡ－活性链长对ＭＭＡ嵌段共聚的影响，认为，当第一嵌段单体为Ｃ７～９ＭＡ，Ｔ＝－２０℃，［Ｉ］＝５．０～５．４×１０－２ｍｏｌ／Ｌ，Ｍｎ（ＰＣ７～９ＭＡ－）＜１．６×１０４时，有利于ＰＣ７～９ＭＡ－ｂ－ＰＭＭＡ嵌段共聚物的合成；采用ＧＰＣ、ＩＲ、ＮＭＲ对所得嵌段共聚物进行了表征。The anionic block copolymerization MMA and C7￣9Methacrylate(C7￣9MA) was studied using nBuLi as initiator. PC7￣9MAbPMMA copolymer was obtained. The influence of monomer sequence, temperature, initiator and active chain length of PC7￣9MA- were discussed on block copolymerization. When T=-20 ℃,=0.50￣0.54×10-2 mol/L, C7￣9MA as first monomer, PC7￣9MA- with  n￣ 1. 6×104 was favorable to the synthesis of PC7￣9MA bPMMA block copolymer. The molecular weight and molecular weight distribution of copolymer were measured by GPC. The structure of block copolymer was characterized by FTIR and 1HNMR.

关 键 词：阴离子聚合 甲基丙烯酸酯 嵌段共聚物 结构 聚合 

分 类 号：O632.33[理学—高分子化学]