Effects of polydispersity on the phase coexistence diagrams in multiblock copolymers with Laser block length distribution

M. Foroutan and M.A. Jafarizadeh

Physica A: Statistical Mechanics and its Applications, 2003, vol. 329, issue 3, 337-349

Abstract: Phase behavior of AB-multiblock copolymer melts which consists of chains with laser distribution of A and B blocks have been investigated in the framework of the mean-field theory, where the polydispersity of copolymer is a function of two parameters K and M. The influence of the Laser distribution on higher-order correlation functions (up to sixth order) are computed for various values of K and M, and their contributions on the phase diagrams and phase coexistence are presented. It is shown that, with increasing polydispersity (decreasing K and increasing M) the transition lines of all phases shift upwards, consequently polydispersity destabilize the system.

Keywords: Phase coexistence; Laser distribution; Polydispersity; Block length; Phase diagram; Multiblock copolymer melts; Correlation functions (search for similar items in EconPapers)
Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:329:y:2003:i:3:p:337-349

DOI: 10.1016/S0378-4371(03)00633-2

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