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How synergistic aqueous lubrication is mediated by natural and synthetic molecular aggregates

机译：如何通过天然和合成分子聚集体介导协同含水润滑

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Nature lubricates in aqueous environment,and thus the example of a human synovial joint with its seamless function has been a fascination for scientists since the times of the birth of modern science.Here,inspired by nature,we investigate the mechanistic function of three different types of synergistic molecular aggregates.Firstly,we show how simple phospholipids lubricate hydrophilic model surfaces of silica and how this lubrication is facilitated further by the presence of an anionic polysaccharide,hyaluronan,due to the enhanced surface build-up of lubricant material.Next,we mimic natural polylectrolyte-surfactant aggregation by employing a highly positively charged polyelectrolyte and anionic surfactant that strongly associate both in the bulk and at the surfaces by building structured aggregates that lubricate due to hydration lubrication.This occurs despite of the presence of strong attraction between the lubricated surfaces.This is an example of synergistic lubrication due to particular internal structural arrangement of the aggregates.Finally,we investigate the case of synergistic lubrication due to preferential surface ordering of two biological polyelectrolytes,cartilage oligomeric matrix protein and lubricin,that leads to favourable lubrication.
机译：自然润滑在水环境中，因此人类滑膜关节的例子与其无缝函数的魅力为科学家，自现代科学的诞生时间是自然的启发，我们调查了三种不同类型的机械函数协同分子聚集体。首先，我们展示了二氧化硅的简单润滑性亲水性模型表面的简单润滑性和这种润滑是如何进一步通过阴离子多糖的进一步促进的，这是由于润滑剂材料的增强的表面堆积而进一步促进了这种润滑。Next，我们通过采用高度带电的聚电解质和阴离子表面活性剂来模拟自然膜解电石 - 表面活性剂聚集体，该聚电解质和阴离子表面活性剂通过构建由于水合润滑而润滑的结构化聚集体。尽管存在润滑之间的强吸引力，但发生了润滑的结构化聚集体表面。这是由于标准杆菌的协同润滑的一个例子细菌的内部结构布置。最后，我们研究了两个生物聚电解质，软骨寡聚基蛋白和润滑素的优先表面排序，探讨了协同润滑的情况，导致润滑有利的润滑。

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