ハイドロゲルにおける降伏挙動とクリープ特性の関係

抄録

Flow characteristics of a hydrogel with different butylene glycol amounts are investigated by the stress-ramp and creep tests. We estimated the viscoelastic parameter and determined a creep compliance J_ramp using least-squares fitting experimental data measured by stress-ramp test before the yield. Our findings show that J_ramp varies with some deformation phases, which are in good agreement with the results of the creep test. From these results, the dashpot has an impact on the condition of the yield behavior.