Analysis of sequence distribution in methyl methacrylate-methyl acrylate copolymers by 13C NMR spectroscopy

被引：40

作者：

Kim, Y ^{[1
]}

Harwood, HJ ^{[1
]}

机构：

[1] Univ Akron, Maurice Morton Inst Polymer Sci, Akron, OH 44325 USA

来源：

POLYMER | 2002年 / 43卷 / 11期

基金：

美国国家科学基金会;

关键词：

C-13; NMR; acrylate copolymer; methacrylate copolymer;

D O I：

10.1016/S0032-3861(02)00153-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Methyl methacrylate (MMA)-methyl acrylate (MA) copolymers, prepared in bulk at 50 degreesC using AIBN as initiator, were characterized by 150 MHz C-13 NMR spectroscopy, including use of the Distortionless Enhancement by Polarization Transfer (DEPT) experiment to obtain methylene and methine carbon resonances as subspectra. Dyad, triad, tetrad and partial pentad distributions were measured from the alpha-methyl, methine and methylene carbon resonances. These were in good agreement with distributions calculated for the copolymers based on monomer feed compositions, conversions and reactivity ratios of 2.60 and 0.27 for methyl methacrylate and methyl acrylate, respectively. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：3229 / 3237

页数：9

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