Hershkovits Eli, Tannenbaum Allen, Tannenbaum Rina
School of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332.
J Phys Chem C Nanomater Interfaces. 2007 Aug 23;111(33):12369-12375. doi: 10.1021/jp0725073.
In this article, we have developed a simple model that describes the adsorption of polymer chains from a solution having a good solvent onto a reactive surface of varying curvatures. In order to evaluate the impact of particle size on the adsorption process, we have probed the adsorption of poly(methyl methacrylate) (PMMA) on aluminum oxide (AlO) surfaces belonging to particles of different sizes. The basic approach assumed that the details of the chemisorption mechanism of PMMA on aluminum oxide surfaces are independent of surface curvature. The combination of the experimental results with the theoretical approach that we have developed show the existence of three different regimes of adsorption of polymer chains onto the surfaces of metal nanoparticles.
在本文中，我们开发了一个简单模型，该模型描述了聚合物链从具有良溶剂的溶液吸附到具有不同曲率的反应性表面上的过程。为了评估粒径对吸附过程的影响，我们研究了聚甲基丙烯酸甲酯（PMMA）在不同尺寸颗粒的氧化铝（AlO）表面上的吸附情况。基本方法假定PMMA在氧化铝表面的化学吸附机理细节与表面曲率无关。我们将实验结果与所开发的理论方法相结合，结果表明聚合物链在金属纳米颗粒表面上存在三种不同的吸附状态。
