DETERMINATION BY C-13-NMR SPECTROSCOPY OF THE MICROSTRUCTURE OF COPOLYMERS OF ACRYLIC-ACID WITH VINYL-ACETATE

被引：16

作者：

BRAR, AS

SUNITA

机构：

[1] Department of Chemistry, Indian Institute of Technology, New Delhi, 110016, Hauz Khas

来源：

EUROPEAN POLYMER JOURNAL | 1991年 / 27卷 / 01期

关键词：

D O I：

10.1016/0014-3057(91)90119-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Acrylic acid-vinyl acetate copolymers were prepared in bulk using benzoyl peroxide as initiator. Copolymer compositions were determined by volumetric titration; monomer reactivity ratios were determined by the method of Kelen-Tudos. Terminal and penultimate reactivity ratios have been calculated using the observed monomer triad sequence distribution determined from C-13-NMR spectroscopy. Triad sequence distribution was used to calculate dyad concentrations, probability parameters, number-average sequence lengths and comonomer mol fractions in the copolymers. The observed triad sequence concentrations as determined from C-13-NMR agreed well with those calculated from reactivity ratios.

引用

页码：17 / 20

页数：4

共 15 条

[1]

Brandrup J, 1966, POLYM HDB, V1st

[2] MICROSTRUCTURE OF COPOLYMERS OF METHYL-METHACRYLATE WITH ETHYL METHACRYLATE [J].