Abstract
Using molecular dynamics simulations we show that a given monomer in a miscible polymer blend experiences broad distributions of both connectivity driven self-concentrations and thermodynamically controlled intermolecular concentration fluctuations. While these distributions should play a significant role in determining the constituent's dynamics across the whole concentration range, the distribution of self-concentrations is particularly important in the dilute limit, where intermolecular concentration fluctuations should be absent. These conclusions allow us to rationalize the recent literature results that report the apparent self-concentration determined in the dilute limit surprisingly depended on the blend partner.
Original language | English (US) |
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Article number | 037801 |
Journal | Physical review letters |
Volume | 103 |
Issue number | 3 |
DOIs | |
State | Published - Aug 6 2009 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy