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

Authors
BARHAM PJ HILL MJ GOLDBECKWOOD G VANRUITEN J
Citation
Pj. Barham et al., A QUALITATIVE SCHEME FOR THE LIQUID-PHASE SEPARATION IN BLENDS OF HOMOPOLYMERS WITH THEIR BRANCHED COPOLYMERS, Polymer, 34(14), 1993, pp. 2981-2988
Citations number
19
Categorie Soggetti
Polymer Sciences
Journal title
Polymer → ACNP
ISSN journal
00323861
Volume
34
Issue
14
Year of publication
1993
Pages
2981 - 2988
Database
ISI
SICI code
0032-3861(1993)34:14<2981:AQSFTL>2.0.ZU;2-N
Abstract
It has been shown that blends of homopolymers with lightly branched co polymers exhibit liquid-liquid phase separation. The region of phase s eparation is asymmetrically placed towards the copolymer-rich side of the phase diagram, and the width of the region of phase separation dec reases as the branch content of the copolymer increases. A simple mode l 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.