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
Посилання на статтю:
A qualitative scheme for the liquid phase separation in blends of homopolymers with their branched copolymers / P. J. Barham, M. J. Hill* and G. Goldbeck-Wood // Polymer. – 1993. – Vol 34. – P. 2981-2988.