Institute for Theoretical Physics, University of Münster, Wilhelm-Klemm-Straße 9, 48149 Münster, Germany.
Soft Matter. 2015 Feb 14;11(6):1038-53. doi: 10.1039/c4sm02580f.
This feature paper reviews our recent efforts to theoretically model the effect of polymer mediated interactions on the coagulation-fragmentation of nano-colloids in different settings encountered in practical systems. The polymer-mediated interactions among nanoparticles play a key role in many biological and technological processes such as red blood cell aggregation, protein crystallization, self-healing of polymer composites, filler reinforcement of rubbers used in tire technology, etc. By developing and making use of the novel potential theory, we investigate several important cases of these interactions acting between nanoparticles in diverse nano-polymer composites. As a demonstration of its practical applicability, we use the developed theory to investigate the effect of polymer mediated interactions on the coagulation-fragmentation of fillers and their kinetic stability in the presence of non-adsorbing and adsorbing polymers. In particular, we use our findings to develop a pragmatic way of evaluating the kinetic stability of nano-filler agglomerates critical for understanding the filler reinforcement of rubbers. Finally, we perform thorough comparison of the present theoretical findings with the available experimental data and simulations.
这篇专题论文回顾了我们最近在理论上建模聚合物介导相互作用对实际系统中不同环境下纳米胶体凝聚-碎裂的影响所做的努力。纳米粒子之间的聚合物介导相互作用在许多生物和技术过程中起着关键作用，如红细胞聚集、蛋白质结晶、聚合物复合材料的自修复、用于轮胎技术的橡胶中的填料增强等。通过开发和利用新的势能理论，我们研究了几种不同纳米聚合物复合材料中纳米粒子之间相互作用的重要情况。作为其实用性的一个例证，我们使用所开发的理论研究了聚合物介导相互作用对填充剂凝聚-碎裂的影响，以及在非吸附和吸附聚合物存在下它们的动力学稳定性。特别是，我们利用研究结果提出了一种评估纳米填充剂团聚体动力学稳定性的实用方法，这对于理解橡胶中的填充剂增强至关重要。最后，我们对现有理论结果与现有实验数据和模拟进行了彻底的比较。
