LIQUID-LIQUID PHASE SEGREGATION IN BLENDS OF A LINEAR POLYETHYLENE WITH A SERIES OF OCTENE COPOLYMERS OF DIFFERING BRANCH CONTENT

被引：42

作者：

HILL, MJ ^{[1
]}

BARHAM, PJ ^{[1
]}

VANRUITEN, J ^{[1
]}

机构：

[1] DSM RES PAC CM,6160 MD GELEEN,NETHERLANDS

来源：

POLYMER | 1993年 / 34卷 / 14期

关键词：

PHASE SEPARATION; POLYETHYLENE; COPOLYMERS;

D O I：

10.1016/0032-3861(93)90623-I

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A linear polyethylene (LPE) has been blended with a series of random ethylene-octene copolymers of differing octene content. Melts of blends containing the lowest octene contents (2, 3, 5 and 8 mol%) showed liquid-liquid phase separation at some temperatures and for some compositions. The phase-separated regions were in the shape of closed loops and asymmetrically placed at low LPE content. This behaviour has been found previously for LPE/branched PE blends. However, unexpectedly, the phase-separated loops became smaller as the octene content of the copolymer increased. Blends of LPE with a 12 mol% octene copolymer showed extensive separation and rather different morphologies.

引用

页码：2975 / 2980

页数：6

共 9 条

[1] PHASE-SEPARATION IN POLYETHYLENE MELTS [J].