Role of Polymer Conformation and Hydrodynamics on Nanoparticle Deposits on a Substrate

Journal of Physical Chemistry C 2014, 118, 26808−26815

DOI: 10.1021/jp508054v

Qiangli Zhao, Xiangdong Wang, Chen Zhang, Zhongjie Du,* Ming Tian, and Jianguo Mi*,

摘要：A dynamics density functional theory approach was presented to investigate the polymer-mediated nanoparticle deposits on a solid surface. The equilibrium and nonequilibrium behaviors of nanoparticles in the flexible linear, flexible star, semiflexible linear, and semiflexible star polymer solutions were investigated to evaluate the polymer-induced entropic effects and solvent-mediated hydrodynamic interactions. The theoretical results are in remarkable agreement with the Brownian dynamic simulation data, providing the quantitative verification of particle agglomeration and polymer depletion. The description at the microscopic level reveals new insight into the structurefunction relationship of semidilute polymerparticle suspensions under confinement.