PMMA-BLOCK-POLYISOBUTYLENE-BLOCK-PMMA PREPARED WITH ALPHA,OMEGA-DILITHIATED POLYISOBUTYLENE AND ITS CHARACTERIZATION

被引：27
|
作者：
KITAYAMA, T [1 ]
NISHIURA, T [1 ]
HATADA, K [1 ]
机构：
[1] OSAKA UNIV,FAC SCI,DEPT CHEM,TOYONAKA,OSAKA 560,JAPAN
来源：
POLYMER BULLETIN | 1991年 / 26卷 / 05期
关键词：
D O I：
10.1007/BF01032676
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A triblock copolymer of PMMA and polyisobutylene(PIB), PMMA-block-PIB-block-PMMA, was prepared by anionic polymerization of methyl methacrylate initiated with alpha, omega-dilithiated poly(isobutylene) diisobutylate in tetrahydrofuran at -60-degrees-C. The molecular weight distribution of the block copolymer was close to that of the starting PIB. The stereoregularity of PMMA block was predominantly syndiotactic. Proton spin-lattice relaxation time and solution viscosity of the block copolymer in acetone, which is non-solvent for PIB, indicate that the block copolymer forms rigid spherical particles. Stereocomplex formation with isotactic PMMA was also studied.
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页码：513 / 520
页数：8
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