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Damping transients in polymers during sorption and desorption

✍ Scribed by Josef Kubát; Björn Lindbergson

Publisher
John Wiley and Sons
Year
1965
Tongue
English
Weight
212 KB
Volume
9
Category
Article
ISSN
0021-8995

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✦ Synopsis

It haa 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 system invegtigated were: cellulose (paper )-water; celiulose (paper )-ammonia; gelatin-water; nylon 66-water; cellulose acetate-acetone; poly(viny1 acetate)-acetone; rubber hydrochloride-chloroform; and polystyrenebenzene. The damping waa 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.

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✍ Dr. Hans-Joachim Doelle; Prof. Dr. Lothar Riekert 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 654 KB

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