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Phase equilibria of modified ethylene glycol–maleic anhydride–phtalic anhydride polyester resins
Author(s) -
Hyršl Jan,
Podzimek Štěpán,
Eichler Josef
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070441121
Subject(s) - maleic anhydride , miscibility , styrene , polyester , materials science , phase (matter) , ethylene glycol , polymer chemistry , phase diagram , polymer , thermodynamics , organic chemistry , copolymer , chemistry , composite material , physics
This paper describes the influence of a termination of ended carboxyl groups of ethylene glycol–maleic anhydride–phtalic anhydride polyesters with cyclohexanole on a position of phase interface of the unsaturated polyester–styrene system. At given temperatures, optimal molecular weights were determined for the achievement of maximal miscibility of this polymer with styrene. Simultaneously, a model implicit equation was proposed, which is based on the assumption that the dependence of the interaction parameter χ on number‐average molecular weights is similar to that dependence of the interaction parameter χ on temperature. Solution of these implicit equation are isotherms in the phase diagram M n −ϕ 2 − T cloude point .