Creep and solvent squeeze behavior of κ-carrageenan gels under compression
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Creep by solvent squeeze of cylindrical κ-carrageenan gels is investigated. A phenomenological model to describe the creep and the solvent squeeze of polymer gels is also presented. Under compression, the creep of gels proceeds at a constant diameter except for the initial stage of creep. The change in height of the gels is well reproduced by the sum of three exponential terms, each of which is specified by the combination of displacement and retardation time. The displacement for the second mode, which corresponds to the second longest retardation time, becomes largest for all gel specimens. Three retardation times are commonly proportional to the square of initial diameter of gel specimens. Based on the proposed model, the spring constant in the second mode becomes smallest and the permeability corresponding to the third mode becomes larger than those in the other two modes.
KeywordsSolvent squeeze Creep κ-Carrageenan gel Mechanical model for creep and solvent squeeze
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The authors declare that they have no conflict of interest.
- 1.Burchard W, Ross-Murphy SB (1990) Physical networks-polymers and gels. Elsevier, LondonGoogle Scholar
- 2.DeRossi D, Kajiwara K, Osada Y, Yamauchi A (1991) Polymer gels-fundamentals and biomedical applications. Plenum, New YorkGoogle Scholar
- 4.Hill TL (1986) An introduction to statistical thermodynamics. Dover, New YorkGoogle Scholar
- 5.Treloar LRG (1975) The physics of rubber elasticity. Clarendon Press, OxfordGoogle Scholar
- 9.Yao K, Horinaka J, Takigawa T (2019) Nihon Reoroji Gakkaishi (J Soc Rheol Jpn) 47:25Google Scholar
- 12.Yao K, Horinaka J, Takigawa T (2019) Nihon Reoroji Gakkaishi (J Soc Rheol Jpn) 46:233Google Scholar