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Dissolution dynamics of some polymers: Solvent‐polymer boundaries
Author(s) -
Ouano A. C.,
Carothers J. A.
Publication year - 1980
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760200208
Subject(s) - tacticity , polystyrene , dissolution , materials science , polymer , solvent , methyl methacrylate , swelling , polymer chemistry , chemical engineering , cracking , composite material , copolymer , organic chemistry , polymerization , chemistry , engineering
A critical angle illumination microscopy technique was used to study the in situ dissolution dynamics of polystyrene, poly (α‐methylstyrene) and the two tactic forms of poly (methyl methacrylate), (PMMA), in several solvents. The dissolution characteristics; of polymers were found to be greatly influenced by several factors: type of polymer, processing condition of the sample, type of solvent, and tacticity, Polystyrene was found to exhibit extensive swelling in several solvents while atactic PMMA exhibited extensive cracking on dissolution. Isotactic PMMA, which has a glass temperature of about 70°C lower than the atactic PMMA, showed swelling behavior similar to atactic polystyrene, while the α‐methylstyrene showed the cracking phenomena exhibited by atactic PMMA.