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Blends of polycarbonate and poly(hexamethylene sebacate): I. Physical properties
Author(s) -
Shih K. S.,
Beatty C. L.
Publication year - 1987
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.760270609
Subject(s) - polycarbonate , materials science , differential scanning calorimetry , solubility , glass transition , casting , miscibility , polymer , methylene , polymer chemistry , crystallization , chemical engineering , composite material , organic chemistry , chemistry , thermodynamics , engineering , physics
The compatibility of polymer blends of high‐molecular‐weight polycarbonate (PC) and high‐molecular‐weight poly(hexamethylene sebacate) (HMS) were characterized. Samples were prepared by solution blending them In methylene chloride followed by doctor blade casting. Optical spectroscopy, tensile stress‐strain, differential scanning calorimetry, and dielectric relaxation spectroscopy were employed to determine the physical and mechanical properties of the blends. These high‐molecular‐weight blends exhibit a limited solubility of HMS In PC as evidenced by a decrease in the glass‐transition temperature of PC. In fact, HMS solubility increases PC mobility sufficiently to allow partial crystallization of PC. Over most of the composition range, HMS phase separates and crystallizes.