Elastic-hydrodynamic transition of gel friction
Elastic-hydrodynamic transition of gel friction
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DOI：
10.1021/la050635h
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发表时间：
2005-09-13
期刊：
影响因子：
3.9
通讯作者：
Gong, JP
中科院分区：
文献类型：
--
作者：
Kurokawa, T;Tominaga, T;Gong, JP
我们报告了在 0.01-2.5 MPa 的正常压力范围内高强度凝胶对玻璃基板的表面滑动摩擦。在较宽的速度范围内研究了用不同粘性溶剂溶胀的凝胶的摩擦力。建立了速度-粘度换算关系。从速度-粘度转换关系中，可以观察到弹性-流体动力转变特征的主曲线。结果表明，我们之前的工作提出的吸附模型即使在高达 MPa 数量级的压力下也是有效的，这是软骨在关节中承受的压力数量级。
We report the surface sliding friction of a high strength gel against a glass substrate under a normal pressure range of 0.01-2.5 MPa. The friction of the gel swollen with different viscous solvents is investigated over a wide velocity range. A velocity-viscosity conversion relationship is established. From the velocity-viscosity conversion relationship, a master curve that is characteristic to the elastic-hydrodynamic transition is observed. The results indicate that the adsorption model proposed by our previous work is valid even under a pressure up to MPa orders, which is the order of pressure that a cartilage sustains in the articular joints.