Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5190834 | Polymer | 2006 | 5 Pages |
Abstract
The effect of nanoparticles on the dynamic and configurational properties of a single polymer chain has been studied by using dynamic Monte Carlo simulation. An attractive potential, ε, is considered between fixed nanoparticles and polymer beads. The diffusion coefficient of the polymer D remains constant for weak interactions, i.e. small β=âε/kBT, and then gradually drops to zero at a critical value βD*. However, the mean square end-to-end distance ãR2ã shows a different behavior with an increase in the attractive interaction. ãR2ã decreases at small β and reaches a minimum at βR*, then goes up slowly and at last saturates at strong interaction. The values βD* and βR* scale with the concentration of nanoparticles. Interesting findings are: (1) a chain has its minimum size before the chain stops its diffusion, and (2) a chain continues its configuration adjustment even for β>βD*.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Jianhua Huang, Zhaofeng Mao, Changji Qian,