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Impact toughening mechanisms in rubber‐dispersed polymer alloy
Author(s) -
Okamoto Y.,
Miyagi H.,
Uno T.,
Amemiya Y.
Publication year - 1993
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.760332404
Subject(s) - materials science , crazing , natural rubber , composite material , polymer , small angle x ray scattering , elastomer , alloy , polystyrene , scattering , optics , physics
The toughening mechanisms of rubber‐dispersed polymer alloys were investigated with respect to two factors: (i) characteristic ratio, C ∞ , as a measure of chain flexibility of the polymer matrix and (ii) the rubber particle size in high impact polystyrene/poly(2,6‐dimethyl‐ 1,4‐phenylene ether) blend systems. Measurements of the specific gravity, synchrotron radiation small angle X‐ray scattering (SR‐SAXS) tests, and finite element analysis were carried out to gain understanding of plastic deformation (crazing and shear yielding) of these materials. Shear yielding was found to be enhanced when the C ∞ value of the matrix polymer was relatively low and the rubber particles were small (submicron). From these results, we presumed the impact energy absorption mechanisms to be governed by these two factors.