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Rheological Properties of Hydrogels of Agar-agar

1961; Oxford University Press; Volume: 34; Issue: 9 Linguagem: Inglês

10.1246/bcsj.34.1233

1348-0634

Kiyoshi Arakawa,

Surfactants and Colloidal Systems

Abstract A theological study was made for the hydrogels and the solution of agar-agar. The viscosity vs. concentration relation exhibits the character of polyelectrolyte. From the stress relaxation data obtained by a chainomatic balance relaxometer the following results were obtained. 1) The behavior of hydrogels of agar-agar is represented by the 6-elements mechanical model. 2) The activation energy of the secondary bond between agar-agar molecules which constructs the gel structure is 4.5∼6.6 kcal./mol. Then, there was some discussion on the structure of the hydrogels of agar-agar.