Phase diagram for irregular and non-symmetric cross-linked polymer blends

Edilson Vargas and Marcia C. Barbosa

Physica A: Statistical Mechanics and its Applications, 1998, vol. 257, issue 1, 312-318

Abstract: We consider a blend made of two types of polymers, A and B, of different chemical nature. At high temperature, the homogeneous mixture is cross-linked. As the temperature is lowered, the two species try to segregate but are kept together by the cross-links. We show that for inhomogeneous, non-regular and non-permanent cross-links, there is a complete segregation at low temperatures, if the system is just weakly cross-linked, and partial segregation otherwise. We also demonstrate that there is no phase transition between the homogeneous phase and the microphase for non-symmetric systems. Our analysis is checked with the experiment.

Keywords: Phase transition and critical phenomina; Polymer (search for similar items in EconPapers)
Date: 1998
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:257:y:1998:i:1:p:312-318

DOI: 10.1016/S0378-4371(98)00151-4

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