Monte Carlo Simulation of the Polymer-Analogous Reaction in Polymer Blendстатья

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1. Полный текст PolSci2009.pdf 273,8 КБ 2 февраля 2017 [chertovich]

[1] Monte carlo simulation of the polymer-analogous reaction in polymer blend / A. V. Chertovich, D. V. Guseva, E. N. Govorun et al. // Polymer Science - Series A. — 2009. — Vol. 51, no. 8. — P. 957–964. The autocatalytic polymer-analogous reaction A → B in a blend composed of two contacting layers of compatible homopolymers A and B is studied by numerical simulation using the dynamic continuum Monte Carlo method. The evolution of the numerical density of units A and units initially belonged to the chains of homopolymer A is investigated in the course of the reaction and interdiffusion. Local characteristics of the distribution of the homopolymer with respect to its composition and blocks A and B with respect to their length are calculated at different times. The dispersions of the above distributions are appreciably higher than the corresponding dispersion of the Bernoullian copolymer of the same average composition, despite the random character of the reaction. This effect can be provided by changes in the composition of the blend on the scale of the reacting chain as well as by the diffusive mixing of the above chains. For the products of the polymer-analogous reaction, the broadening of the compositional distribution is predicted also by the theoretical model, which describes interdiffusion in the reacting system on scales that are markedly greater than the size of a polymer chain. [ DOI ]

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