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Effects of equal‐channel, multiple‐angular extrusion on the physical and mechanical properties of glassy polymers
Author(s) -
Beloshenko Victor A.,
Voznyak Andrei V.,
Voznyak Yuri V.
Publication year - 2015
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.42180
Subject(s) - materials science , polycarbonate , differential scanning calorimetry , extrusion , composite material , polymer , equal channel angular extrusion , acrylate , scanning electron microscope , polymer chemistry , monomer , thermodynamics , physics
ABSTRACT Through the examples of polycarbonate and poly(methyl acrylate), the evolution of the structure and properties of glassy polymers processed by equal‐channel multiple‐angular extrusion (ECMAE) were studied. It was demonstrated that ECMAE allowed the substantial improvement of the set of strain–strength characteristics of these materials, regardless of the direction of loading applied. With the use of the data from scanning electron microscopy, differential scanning calorimetry, and dilatometry, we found that the simultaneous growth in the strength, plasticity, and impact resistance was related to the formation of a net of biaxially oriented polymeric chains, the decrease in the free volume, and the reinforcement of intermolecular interaction. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42180.