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A proposal for a coefficient of hygroelasticity
Author(s) -
Cohn Daniel,
Marom Gad
Publication year - 1978
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.760181305
Subject(s) - materials science , thermal expansion , epoxy , polymer , polyester , boiling , thermodynamics , composite material , chloride , physics , metallurgy
Swelling and hygroelasticity of polymers are discussed in terms of a coefficient of hygroelasticity defined here by analogy with the coefficient of thermal expansion. The relationship between the proposed coefficient and the mechanical properties of the material and the stresses which develop in it is established. The relationship provides means for predicting the lifetime of the polymer under conditions similar to those used for measuring the coefficient of hygroelasticity. The experimentally examined behaviors of two systems, polyester‐boiling water and epoxy‐methylene chloride at 18°C, are in reasonable agreement with the predictions.