Year: 2010
Type: article
Abstract: Angular correlations in dense solutions and melts of flexible polymer chains are investigated with respect to the distance r between the bonds by comparing quantitative predictions of perturbation calculations with numerical data obtained by Monte Carlo simulation of the bond-fluctuation model. We consider both monodisperse systems and grand-canonical (Flory-distributed) equilibrium polymers. Density effects are discussed as well as finite chain length corrections. The intrachain bond−bond correlation function P ( r ) is shown to decay as P ( r ) ∼ 1/ r 3 for ξ ≪ r ≪ r* with ξ being the screening length of the density fluctuations and r* ∼ N 1/3 a novel length scale increasing slowly with (mean) chain length N .
Source: Macromolecules
DOI: 10.1021/ma902299h
Authors: J. P. Wittmer, A. Johner, S. P. Obukhov, H. Meyer, A. Cavallo, J. Baschnagel
Language: English
Subfield: Physical and Theoretical Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2074459127