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Structure‐property relationships in polyurethane‐poly(styrene‐ co ‐acrylonitrile) blends
Author(s) -
Z̆erjal B.,
Musil V.,
S̆mit I.,
Jelčić Z̆.,
Malavas̆Ic̆ T.
Publication year - 1993
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.1993.070500418
Subject(s) - acrylonitrile , thermoplastic polyurethane , materials science , morphology (biology) , polyurethane , styrene , ionomer , polymer blend , polymer chemistry , composite material , copolymer , phase (matter) , chemical engineering , polymer , elastomer , chemistry , organic chemistry , engineering , biology , genetics
Blends of Thermoplastic polyurethane (TPU) and poly(styrene‐co‐acrylonitrile) (SAN) (34% acrylonitrile and 24% acrylonitrile) and polyurethane ionomer (PUI) with SAN (34% acrylonitrile) were prepared in the melt. The structural properties and morphology of the blends were investigated. TPU and SAN blends were immiscible in the composition range 30–70 wt % of TPU or SAN. In TPU‐rich blends, SAN propagates the separation of hard and soft segements in TPU. In SAN‐rich blends, the interaction stage depends on acrylonitrile contents. SEM measurements showed that the blends of TPU/SAN were fine dispersions and clearly showed a continuous and disperse phase, whereas the morphology of the PUI/SAN blends were different. © 1993 John Wiley & Sons, Inc.