RECOVERABLE WORK VERSUS ASYMPTOTIC RELAXATION MODULUS IN AGAR, CARRAGEENAN AND GELLAN GELS

A. NUSSINOVITCH*, G. KALETUNC, M. D. NORMAND, M. PELEG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Cylindrical specimens of agar, carrageenan and gellan gels (1&2%) were uniaxially compressed to various predetermined strain levels and then decompressed. In an independent set of tests, specimens of the same gels were compressed to the same strains and then allowed to relax. Both the percent recoverable work, calculated from the stress‐strain relationships in the compression‐decompression cycles and the magnitude of the asymptotic relaxation modulus, calculated from the normalized and linearized relaxation curves, decreased as the strain increased. In all three gels there was a linear correlation between the percent recoverable work and the magnitude of the asymptotic modulus at corresponding strains, a sign that both parameters are indicative of these gels’ degree of elasticity and the latter's strain dependency.

Original languageEnglish
Pages (from-to)427-438
Number of pages12
JournalJournal of Texture Studies
Volume21
Issue number4
DOIs
StatePublished - Jan 1990
Externally publishedYes

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