SOLID-STATE NMR-STUDY OF MISCIBILITY AND PHASE-SEPARATION OF POLYMER BLEND - POLYCARBONATE POLY(METHYL METHACRYLATE)

被引：26

作者：

ASANO, A ^{[1
]}

TAKEGOSHI, K ^{[1
]}

HIKICHI, K ^{[1
]}

机构：

[1] HOKKAIDO UNIV,FAC SCI,DEPT POLYMER SCI,SAPPORO,HOKKAIDO 060,JAPAN

来源：

POLYMER JOURNAL | 1992年 / 24卷 / 06期

关键词：

PC PMMA BLEND; MISCIBILITY; PHASE-SEPARATION; SPIN-DIFFUSION; H-1 SPIN LATTICE RELAXATION; HIGH-RESOLUTION SOLID-STATE NMR;

D O I：

10.1295/polymj.24.555

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Miscibility and phase-separation of bisphenol A polycarbonate/poly(methyl methacrylate) (PC/PMMA) blend are studied by examining the H-1 spin-lattice relaxation behavior. The observation is done indirectly through high-resolution solid-state C-13 resonance. The blend is found to be homogeneous on a scale of 200-300 angstrom, but heterogeneous on a scale of 20-30 angstrom. The phase diagram is obtained by analyzing the recovery curve of H-1 relaxation of the blends heated at various temperatures for 30 min. The kinetics of the phase-separation were also observed, and found to be governed by spinodal decomposition.

引用

页码：555 / 562

页数：8

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