کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5190834 | 1381218 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic Monte Carlo study on the polymer chain in random media filled with nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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*.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 47, Issue 8, 5 April 2006, Pages 2928-2932
Journal: Polymer - Volume 47, Issue 8, 5 April 2006, Pages 2928-2932
نویسندگان
Jianhua Huang, Zhaofeng Mao, Changji Qian,