The Phase Separation Dynamics of Polymer Blends with Nanoparticles
Polymer blending is a simple and attractive way for obtaining new products with interesting properties. Nanoparticles are used to compatibilize the blends. Herein, using dissipative particle dynamics (DPD) simulation technique , we study the effects of nanoparticles on the dynamics of polymer blends. Isotropic nanopheres with appropriate size and volume fraction which interact symmetrically with two fluid components which volume fractions are equal can slow down the process of phase separation. The average saturated phase domain size is proportional to R_N/θ_N ,where R_N/and θ_N are the radius and the volume fraction of the nanoparticles, respectively. The isotropic nanoparticles with too small radius can easily desorb from the interface into the bulk (shown in Fig. 1), which hinder the tendency of reducing domain size. By contrast, janus particles can adsorb at interface more strongly than isotropic nanoparticles due to its amphiphilic nature. Hence they never desorb from the interface(Fig.2), and effectively reduce the domain size.
Manxia Huang Hongxia Guo
State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing
国际会议
PP’2010，Jinan International Symposium on Polymer Physics(2010济南国际高分子物理学术研讨会)
济南
英文
418-419
2010-06-06（万方平台首次上网日期，不代表论文的发表时间）