STEREOREGULARITY OF VARIOUS POLYACRYLATES OBTAINED FROM GRAFT-COPOLYMERS ONTO STARCH

被引：16

作者：

GONI, I

GURRUCHAGA, M

VALERO, M

GUZMAN, GM

机构：

[1] Dpto. Ciencia y Tecnologá de Polímeros, Facultad de Química, UPV, 20080 San Sebastián

来源：

POLYMER | 1993年 / 34卷 / 08期

关键词：

STEREOREGULARITY; POLYACRYLATES; GRAFT COPOLYMERS;

D O I：

10.1016/0032-3861(93)90343-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

C-13 nuclear magnetic resonance spectra of poly(methyl acrylate) (PMA), poly(ethyl acrylate) (PEA) and poly(butyl acrylate) (PBA), obtained from graft copolymers onto amylose or amylopectin, have been studied. The spectra of the polymers were recorded with a 75 MHz spectrometer and were analysed by triad, tetrad, pentad or hexad placements. All of them follow Bernoullian statistics, with an isotactic parameter of 0.51, 0.44 and 0.43 for PMA, PEA and PBA respectively. By comparison with other values found in the literature it can be asserted that the presence of the carbohydrate has no effect on the tacticity of the grafted polymer.

引用

页码：1780 / 1785

页数：6

共 8 条

[1] SYNTHESIS OF GRAFT-COPOLYMERS OF ACRYLIC-MONOMERS ON AMYLOSE - EFFECT OF REACTION-TIME [J].