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.

引用

页码：513 / 520

页数：8

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