A QUALITATIVE SCHEME FOR THE LIQUID-PHASE SEPARATION IN BLENDS OF HOMOPOLYMERS WITH THEIR BRANCHED COPOLYMERS

被引：26

作者：

BARHAM, PJ

HILL, MJ

GOLDBECKWOOD, G

VANRUITEN, J

机构：

[1] UNIV BRISTOL,HH WILLS PHYS LAB,TYNDALL AVE,BRISTOL BS8 1TL,AVON,ENGLAND

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

来源：

POLYMER | 1993年 / 34卷 / 14期

关键词：

LIQUID LIQUID PHASE SEPARATION; COPOLYMER BLENDS; FREE ENERGY DIAGRAMS;

D O I：

10.1016/0032-3861(93)90624-J

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

It has been shown that blends of homopolymers with lightly branched copolymers exhibit liquid-liquid phase separation. The region of phase separation is asymmetrically placed towards the copolymer-rich side of the phase diagram, and the width of the region of phase separation decreases as the branch content of the copolymer increases. A simple model which can qualitatively explain the observed behaviour is presented. The basic principle is that there is an asymmetric extra term in the free energy of mixing.

引用

收藏

页码：2981 / 2988

页数：8

相关论文

共 19 条

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

BARHAM, PJ ;

HILL, MJ ;

KELLER, A ;

ROSNEY, CCA .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1988, 7 (12) :1271-1275

[2] LATTICE THEORIES OF POLYMERIC FLUIDS [J].

FREED, KF ;

BAWENDI, MG .

JOURNAL OF PHYSICAL CHEMISTRY, 1989, 93 (06) :2194-2203

[3] PHASE SEGREGATION IN MELTS OF BLENDS OF LINEAR AND BRANCHED POLYETHYLENE [J].

HILL, MJ ;

BARHAM, PJ ;

KELLER, A ;

ROSNEY, CCA .

POLYMER, 1991, 32 (08) :1384-1393

[4] LIQUID LIQUID-PHASE SEPARATION IN MELTS OF BLENDS OF LINEAR WITH BRANCHED POLYETHYLENES - MORPHOLOGICAL EXPLORATION OF THE PHASE-DIAGRAM [J].

HILL, MJ ;

BARHAM, PJ .

POLYMER, 1992, 33 (19) :4099-4107

[5] LIQUID-LIQUID PHASE SEGREGATION IN BLENDS OF A LINEAR POLYETHYLENE WITH A SERIES OF OCTENE COPOLYMERS OF DIFFERING BRANCH CONTENT [J].

HILL, MJ ;

BARHAM, PJ ;

VANRUITEN, J .

POLYMER, 1993, 34 (14) :2975-2980

[6] PHASE SEGREGATION IN BLENDS OF LINEAR WITH BRANCHED POLYETHYLENE - THE EFFECT OF VARYING THE MOLECULAR-WEIGHT OF THE LINEAR POLYMER [J].

HILL, MJ ;

BARHAM, PJ ;

KELLER, A .

POLYMER, 1992, 33 (12) :2530-2541

[7] LIQUID-LIQUID PHASE SEPARATION IN MULTICOMPONENT POLYMER SYSTEMS .16. MIXTURES OF RANDOM COPOLYMERS [J].

KONINGSVELD, R ;

KLEINTJENS, LA ;

MARKERT, G .

MACROMOLECULES, 1977, 10 (05) :1105-1108

[8] LIQUID-LIQUID PHASE SEPARATION IN MULTICOMPONENT POLYMER SYSTEMS .10. CONCENTRATION DEPENDENCE OF PAIR INTERACTION PARAMETER IN SYSTEM CYCLOHEXANE-POLYSTYRENE [J].

KONINGSVELD, R ;

KLEINTJENS, LA .

MACROMOLECULES, 1971, 4 (05) :637-+

[9]

KONINGSVELD R, 1970, DISCUSS FARADAY SOC, V49, P144

[10]

KONINGSVELD R, 1968, ADV COLLOID INTERFAC, V2, P151