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Compatibility of polystyrene and poly(methyl methacrylate) in benzene. Effects of molecular weight and temperature
Author(s) -
Hong S.D.,
Burns C. M.
Publication year - 1971
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.1971.070150817
Subject(s) - polystyrene , polymer , methyl methacrylate , benzene , poly(methyl methacrylate) , polymer chemistry , materials science , molar mass distribution , methacrylate , ternary operation , solvent , molecular mass , atmospheric temperature range , thermodynamics , chemistry , copolymer , organic chemistry , composite material , physics , enzyme , computer science , programming language
The incompatibility of polystyrene and poly(methyl methacrylate) in benzene was examined at 20.1°, 40.0°, and 60.2°C. The incipient cloud points of solutions of equal weights of the two polymers were determined by a novel photometric method. Polystyrene samples with weight‐average molecular weights in the range of 3.27 × 10 5 to 6.43 × 10 4 and poly(methyl methacrylate) samples with weight‐average molecular weights in the range of 8.97 × 10 5 to 8.76 × 10 4 were used. Models describing the dependence on molecular weight of the critical concentration of a ternary polymer–polymer–solvent system, presented by Fuchs and by Kuhn et al., were examined in light of the experimental data. A modified model is proposed which gives an improved correlation of these results.