On the Theory of Chemical Reactions in Polymer Blends: Interchain Effects and Mutual Diffusionстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] On the theory of chemical reactions in polymer blends: Interchain effects and mutual diffusion / N. A. Platé, A. D. Litmanovich, V. V. Yashin et al. // Polymer Science - Series A. — 1997. — Vol. 39, no. 1. — P. 3–11. The specific features of macromolecular reactions in polymer blends are treated by taking into account the mutual diffusion of components. The main difficulty in the theory of such processes is associated with the description of mutual diffusion, because both the number of chains moving with different velocities and their diffusion characteristics vary during the course of the reaction. For the polymeranalogous reaction characterized by accelerating the interchain effect and taking place in a compatible mixture, we suggested a solution based on the approaches of linear nonequilibrium thermodynamics. The obtained reaction-diffusion equations give a detailed description of the evolution of the blend structure as a result of the combined effect of macromolecular reactions and mutual diffusion. Competition between phase separation and the formation of block copolymers (via the reaction between terminal groups of two homopolymers) in an incompatible blend at the initial stage of spinodal decomposition is also considered.

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