NMR sequence analysis for copolymers made at high conversions

被引：13

作者：

Cheng, HN ^{[1
]}

机构：

[1] Hercules Inc, Res Ctr, Wilmington, DE 19808 USA

来源：

INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION | 1997年 / 4卷 / 01期

关键词：

computer simulation; Markovian model; Monte Carlo; NMR; sequence distribution; simplex algorithm; triads;

D O I：

10.1080/10236669708033938

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Two analytical methodologies have been devised to treat the NMR sequence data of copolymers that are made at high conversions. The first approach is a computer simulation method whereby the copolymerization is simulated through a Monte Carlo process, and the copolymer sequences obtained are compared with the observed NMR data. In the second approach, the NMR triad data are directly analyzed through the first-order Markovian statistics with provision made for conversion. A simplex algorithm is used to optimize the parameters. The procedure has been automated. Examples are shown to illustrate the use of these approaches.

引用

页码：71 / 85

页数：15

共 35 条

[21] SEQUENCE DISTRIBUTION AND STEREOREGULARITY IN METHYL-METHACRYLATE METHYL ACRYLATE COPOLYMERS AT HIGH CONVERSIONS [J].