CHARACTERIZATION OF GELLAN GELS BY UNIAXIAL COMPRESSION, STRESS RELAXATION AND CREEP

A. NUSSINOVITCH*, M. M. AK, M. D. NORMAND, M. PELEG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

The rheological properties of 0.5–2.5% gellan gels were evaluated by uniaxial compression, stress relaxation and creep tests. The gel's strength was in the range of 0.1–1 kg.cm‐2 and their deformability modulus 1–6 kg.cm‐2. The asymptotic modulus determined in relaxation tests at two strains and the asymptotic creep compliance determined under two loads indicated that gellan gels have a yielding structure. The strains sustained in creep were considerably higher than the failure strain in uniaxial compression. Weight loss due to syneresis was on the order of 4–38% depending on the gum concentration, the deformation level in relaxation or the load in the creep tests.

Original languageEnglish
Pages (from-to)37-50
Number of pages14
JournalJournal of Texture Studies
Volume21
Issue number1
DOIs
StatePublished - Apr 1990
Externally publishedYes

Fingerprint

Dive into the research topics of 'CHARACTERIZATION OF GELLAN GELS BY UNIAXIAL COMPRESSION, STRESS RELAXATION AND CREEP'. Together they form a unique fingerprint.

Cite this