Rheological behaviors and microstructure of Oviductus Ranae hydrogels

Qing Liang; Shouqin Zhang; Jinsong Zhang

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Rheological behaviors and microstructure of Oviductus Ranae hydrogels

机译：输卵管蛙水凝胶的流变行为和微观结构

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The rheological properties of Oviductus Ranae (OR) hydrogels were systematically investigated with shear viscosity, dynamic oscillation, and creep-recovery measurements. The viscosity curves displayed phenomena of shear thinning with increase of shear rate. The flow behaviors of the hydrogels were described using 2 representative rheological models. The lesser water was absorbed by OR, the higher viscosity and greater extent of thixotropy it presents. Dynamic viscoelasticity measurements indicated that the samples exhibit viscoelastic properties as physical gels. Creep curves also revealed that the hydrogels behave as viscoelastic solids. Damped oscillations were observed in the initial stage of creep tests (0–1 s). The viscoelastic moduli obtained from dynamic oscillations and those from damped oscillations agreed with each other. The strong dependence of rheological behaviour on network of OR hydrogels had been confirmed by electron microscopy.

机译：通过剪切粘度，动态振荡和蠕变回复率的测量，系统地研究了Oranductus Ranae（OR）水凝胶的流变特性。粘度曲线显示出随着剪切速率的增加剪切变稀的现象。使用两种代表性的流变模型描述了水凝胶的流动行为。 OR吸收的水越少，则其粘度越高，触变性就越大。动态粘弹性测量表明样品表现出作为物理凝胶的粘弹性质。蠕变曲线还表明，水凝胶表现为粘弹性固体。在蠕变测试的初始阶段（0-1秒）观察到阻尼振荡。从动态振动获得的粘弹性模量和从阻尼振动获得的粘弹性模量彼此一致。电子显微镜证实了流变行为对OR水凝胶网络的强烈依赖性。

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来源
《Food Science and Biotechnology》 |2012年第2期|p.467-474|共8页
作者
Qing Liang; Shouqin Zhang; Jinsong Zhang;
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作者单位

College of Biological and Agricultural Engineering, Jilin University, Changchun Jilin, 130022, China;

College of Biological and Agricultural Engineering, Jilin University, Changchun Jilin, 130022, China;

College of Biological and Agricultural Engineering, Jilin University, Changchun Jilin, 130022, China;

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正文语种 eng
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关键词
rheological behavior; Oviductus Ranae; hydrogel; viscoelasticity; morphology;

机译：流变行为;输卵管;水凝胶;粘弹性;形态;

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Rheological behaviors and microstructure of Oviductus Ranae hydrogels

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