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A study of the miscibility of blends of polybutadiene and styrene‐butadiene copolymers
Author(s) -
Shah Ketan,
White James L.,
Min Kyonsuku
Publication year - 1989
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.760290904
Subject(s) - polybutadiene , miscibility , copolymer , materials science , styrene , styrene butadiene , polymer chemistry , polymer , differential scanning calorimetry , composite material , thermodynamics , physics
We investigated the miscibility of polybutadienes with butadiene‐styrene copolymers of varying styrene content. The methods of optical microscopy, differential scanning calorimetry, and small angle light scattering (SALS) were used. All polymers/copolymers used in this study have equivalent butadiene microstructures. Copolymers with high styrene levels are immiscible with polybutadiene. The tendency to miscibility increases with decreasing styrene content. An upper critical solution temperature is observed with the 23 percent styrene copolymer.