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Damping transients in polymers during sorption and desorption
Author(s) -
Kubát Josef,
Lindbergson Björn
Publication year - 1965
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.1965.070090802
Subject(s) - cellulose acetate , materials science , acetone , polymer , swelling , sorption , polymer chemistry , desorption , vinyl acetate , polystyrene , gelatin , diffusion , natural rubber , cellulose , chemical engineering , composite material , chemistry , organic chemistry , thermodynamics , adsorption , physics , engineering , copolymer
It has been found that sudden changes in atmospheric vapor pressure of swelling agents result in a transient increase in mechanical damping in polymers. The effect was observed on both raising and lowering the vapor pressure. The systems investigated were: cellulose (paper)–water; cellulose (paper)–ammonia; gelatin–water; nylon 66–water; cellulose acetate–acetone; poly(vinyl acetate)‐acetone; rubber hydrochloride–chloroform; and polystyrene–benzene. The damping was measured with a low‐frequency torsional pendulum. The results suggest that the transient damping effect is associated with diffusion processes taking place in the sample during attainment of equilibrium.