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Compatibilized TPU‐PDMS blends: Pros and cons of melt mixing and solution mixing techniques
Author(s) -
Drupitha M. P.,
Naskar Kinsuk,
Nando Golok B.
Publication year - 2017
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.45164
Subject(s) - materials science , thermoplastic polyurethane , polydimethylsiloxane , mixing (physics) , composite material , glass transition , polymer blend , thermoplastic , compatibilization , thermal stability , chemical engineering , copolymer , polymer , elastomer , physics , quantum mechanics , engineering
ABSTRACT The present work describes the influence of processing route on thermomechanical properties of thermoplastic polyurethane (TPU) and polydimethylsiloxane (PDMS) compatibilized blends. In this study, compatibilized blends of TPU and PDMS prepared by melt mixing and solution mixing techniques were compared. Ethylene methyl acrylate at different doses of 1, 2, 3, and 4 phr was used as the compatibilizer in 90:10, 80:20, and 70:30 blend ratios of TPU and PDMS. Optimum percentage of compatibilizer was same in both the methods and which was increased with the percentage of PDMS. As compared to melt mixed blends, solution mixed blends showed improved mechanical properties. From the dynamical mechanical analysis it was observed that the glass transition temperature ( T g ) obtained was higher for the solution mixed blends due to the stiffer chains. The enhanced physicomechanical properties of the solution mixed blends were attributed to the improved thermal stability of the blends. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45164.