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Relative influence of the mobility and the solubility parameters of fluids on the mechanical behavior of high impact polystyrene
Author(s) -
Hoa S. V.
Publication year - 1980
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.760201707
Subject(s) - materials science , solubility , polystyrene , environmental stress cracking , polymer , composite material , creep , hildebrand solubility parameter , stress (linguistics) , surface tension , thermodynamics , organic chemistry , stress corrosion cracking , chemistry , linguistics , philosophy , physics , alloy
Abstract Among different fluid parameters having some effect on the environmental stress cracking of plastics, the surface tension and the solubility parameter are generally accepted as dominant ones. However, experimental evidence to date indicates that one single parameter can not be used as an index for predicting failure in all cases and a distinction of the conditions of their importance has not been made. This paper presents the results obtained from the creep and fatigue response of high impact polystyrene in different environments, especially those environments that do not show any effect on the unstressed polymer. The results indicate that at high stresses, the mobility of the fluid in penetrating into the polymer craze networks is more important and that at smaller stresses, the solubility parameter is more important.