MELTING-POINT DEPRESSION IN ETHYLENE-VINYL ACETATE COPOLYMER MIXTURES

被引：4

作者：

CLOUGH, NE

RICHARDS, RW

IBRAHIM, T

机构：

[1] UNIV DURHAM,INTERDISCIPLINARY RES CTR POLYMER SCI,DURHAM DH1 3LE,ENGLAND

[2] EXXON CHEM,ABINGDON OX13 6BB,OXON,ENGLAND

来源：

POLYMER | 1994年 / 35卷 / 05期

关键词：

MELTING POINT DEPRESSION; COPOLYMER; MISCIBILITY;

D O I：

10.1016/0032-3861(94)90950-4

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

The miscibility of a random copolymer of ethylene and vinyl acetate with three other copolymers based on poly(ethylene glycol), poly(itaconic acid) and a vinyl acetate-fumaric acid ester has been investigated by d.s.c. and X-ray powder diffraction. Melting point depression data could be analysed using the full Nishi-Wang expression but additional entropy contributions to the miscibility were evident in some mixtures. These were attributed to the presence of long hydrocarbon substituents in the copolymers. For mixtures with the poly(ethylene glycol) based copolymer, a large negative value of the interaction parameter was obtained and there was cocrystallization of the ethylene-vinyl acetate copolymer with the docosyl end groups of the poly(ethylene glycol) based copolymer.

引用

页码：1044 / 1050

页数：7

共 18 条

[1]

THERMODYNAMICS OF OLIGOMERIC BINARY-MIXTURES OF POLYETHYLENE-GLYCOL AND POLYPROPYLENE GLYCOL METHYLETHERS [J].