冲击载荷下蛋白质水溶液吸附成膜的润滑试验研究

发布时间：2018-06-30 02:40

  本文选题：冲击载荷 + 蛋白质吸附　； 参考：《摩擦学学报》2017年06期

【摘要】：利用球盘接触形式的光干涉膜厚测量试验机,研究了周期冲击载荷作用下蛋白质水溶液在材料表面的吸附膜生长特性.对比了溶液蛋白质组分、亲疏水对偶表面和冲击条件对球盘接触区蛋白质吸附膜厚的影响.结果显示动态冲击下蛋白质的吸附膜厚要远高于静态吸附,吸附膜不断在接触区生长,之后趋于稳定.金属钢球比陶瓷球、疏水盘表面比亲水盘面,均更有利于蛋白质吸附膜的生长.同时发现吸附膜厚与单一蛋白质的浓度关系不大,却和蛋白质种类关系很大,球蛋白比白蛋白具有更好的吸附成膜性能.
[Abstract]:The adsorption film growth characteristics of protein aqueous solution on the surface of materials under periodic shock loading were studied by means of the optical interference film thickness measurement machine in the form of ball disk contact. The effects of solution protein composition, hydrophobic surface and impact conditions on the thickness of the protein adsorption film in the contact zone of the ball disk were compared. The results show that the adsorption film thickness of protein under dynamic shock is much higher than that of static adsorption, and the adsorption membrane grows continuously in the contact area and then tends to stabilize. The surface of the hydrophobic disk is more favorable to the growth of the protein adsorption membrane than that of the ceramic ball and the hydrophilic surface of the hydrophobic disk. At the same time, it was found that the thickness of the adsorbed membrane was not related to the concentration of single protein, but to the type of protein, and globulin had better adsorption performance than albumin.
【作者单位】： 青岛理工大学机械工程学院;
【基金】：国家自然科学基金项目(51275252)资助~~
【分类号】：O629.73
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本文编号：2084492