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

A. NUSSINOVITCH; M. M. AK; M. D. NORMAND; M. PELEG

doi:10.1111/j.1745-4603.1990.tb00463.x

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 journal › Article › peer-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 language	English
Pages (from-to)	37-50
Number of pages	14
Journal	Journal of Texture Studies
Volume	21
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-4603.1990.tb00463.x
State	Published - Apr 1990
Externally published	Yes

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

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.",

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AU - PELEG, M.

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N2 - 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.

AB - 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.

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

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