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Mechanosorptive effects in cellophane, polyamide 6 and some other polymers studied by dynamic mechanical analysis
1997 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, ISSN 0022-2461, Vol. 32, no 16, p. 4227-4235Article in journal (Refereed) Published
Abstract [en]

Dynamic mechanical data obtained in the tensile mode with cellophane, polyamide 6, PEG, PVAc and PUR foam (compression) subjected to stepwise humidity changes between 5% and 85% relative humidity are reported. With the exception of PVAc, the loss tangent, tan delta, shows a transient peak every time the relative humidity of the surrounding atmosphere is changed. The strength of the tan delta transients increases when the measuring frequency is lowered. The tan delta transients slowly disappear in response to reduction of the rate of humidity change. High amplitude and prestress with static load reduce the height of the transient peaks. Long-term testing results in relatively small changes in the shape of the loss tangent versus time data. For PA6 a narrowing of the loss tangent peaks with diminishing specimen thickness was observed.

Place, publisher, year, edition, pages
2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN: CHAPMAN HALL LTD , 1997. Vol. 32, no 16, p. 4227-4235
Identifiers
URN: urn:nbn:se:miun:diva-11306OAI: oai:DiVA.org:miun-11306DiVA, id: diva2:298370
Available from: 2010-02-22 Created: 2010-02-22 Last updated: 2017-12-12Bibliographically approved

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Ebrahimzadeh, PR

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