Premium
Calculation of phase equilibria in random copolymer systems
Author(s) -
Wohlfarth Christian
Publication year - 1993
Publication title -
macromolecular theory and simulations
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 56
eISSN - 1521-3919
pISSN - 1022-1344
DOI - 10.1002/mats.1993.040020501
Subject(s) - copolymer , dispersity , thermodynamics , materials science , monomer , phase (matter) , phase equilibrium , liquid liquid , phase diagram , statistical physics , polymer , chemistry , polymer chemistry , physics , organic chemistry , chromatography , composite material
Synthesis and application of copolymers are not seldom connected with different phase equilibria. Their precise knowledge is of importance for industrial processing as well as it is a profound basis for a better understanding of the nature and thermodynamics of such systems. As a common situation today, enough experimental information is seldom available in the necessary or desired amount, and a lot of model calculation is, therefore, more or less unavoidable to cover the desired ranges of application. Different equations‐of‐state as well as lattice models are discussed with respect to their applicability for calculating liquid‐liquid and gas‐liquid phase equilibria in copolymer solutions and blends. Examples for high‐pressure phase equilibria in monomer/copolymer mixtures, liquid‐liquid demixing in copolymer blends and for the isotropicnematic phase equilibrium in systems with rigid rod‐like copolymers characterized by distributions of rigid and flexible chain parts are given. The effects of copolymer polydispersity are included by means of continuous thermodynamics. Literature references for original sources, earlier reviews and further applications round up this paper.