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Evaporation of solvent in mixed polymer systems of limited miscibility
Author(s) -
Lloyd Douglas R.,
Burns Charles M.
Publication year - 1975
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.1975.070191021
Subject(s) - solvent , miscibility , polybutadiene , polystyrene , polymer , ternary operation , evaporation , theta solvent , materials science , ternary numeral system , chemical engineering , mass fraction , polymer chemistry , thermodynamics , solvent effects , chemistry , organic chemistry , copolymer , phase (matter) , composite material , physics , computer science , engineering , programming language
The evaporation of the solvent 1,2,3,4‐tetrahydronaphthalene from the ternary system polystyrene/polybutadiene/tetrahydronaphthalene was studied. Ternary solutions of precisely known weight concentrations were prepared and then dried under vacuum and elevated temperatures. When the solution was assumed completely dried to a solid, the solvent content was calculated by difference. The deviation between the two solvent contents, namely, that known by exact weighing of components and that calculated after drying, was found to be significant, the reason for this discrepancy resting in the fact that solvent is assumed entrapped in the polystyrene fraction of the polymer residue. The possibility of the formation of interpenetrating networks causing this solvent entrapment is discussed as is a possible means of achieving more efficient solvent evaporation.