Theoretical Insight into Dispersion of Silica Nanoparticles in Polymer Melts

详细信息    查看全文

• 作者：Zhaoyang Wei ; Yaqi Hou ; Nanying Ning ; Liqun Zhang ; Ming Tian ; Jianguo Mi
• 刊名：Journal of Physical Chemistry B
• 出版年：2015
• 出版时间：July 30, 2015
• 年：2015
• 卷：119
• 期：30
• 页码：9940-9948
• 全文大小：490K
• ISSN：1520-5207

文摘

Silica nanoparticles dispersed in polystyrene, poly(methyl methacrylate), and poly(ethylene oxide) melts have been investigated using a density functional approach. The polymers are regarded as coarse-grained semiflexible chains, and the segment sizes are represented by their Kuhn lengths. The particle鈥損article and particle鈥損olymer interactions are calculated with the Hamaker theory to reflect the relationship between particles and polymer melts. The effects of particle volume fraction and size on the particle dispersion have been quantitatively determined to evaluate their dispersion/aggregation behavior in these polymer melts. It is shown that theoretical predictions are generally in good agreement with the corresponding experimental results, providing the reasonable verification of particle dispersion/agglomeration and polymer depletion.