Сверхкритические флюиды. Теория и практика
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2018, N1, pp. 51-63

I.Sh. Khabriev, M.N. Patrusheva, V.F. Khairutdinov, R. M. Khuzakhanov, F.M. Gumerov, R.M. Garipov

Crystallization of Polymer Mixtures in the Course of their Dispersing Using the SEDS Method

The results of an experimental study of the characteristics of phase equilibria for the systems consisting of toluene, supercritical carbon dioxide and ethylene-vinyl acetate copolymers (EVAC) are presented. The joint dispersing of different EVAC's and polyethylene using the SEDS method is performed at 8.0—25 MPa and 313, 323 and 333 K. A comparison of melting and crystallization processes in the mixtures of copolymers shows that those obtained by the SEDS method have higher degree of crystallinity as compared with the mixtures of the same compositions, but obtained by melt mixing.

Key words: ethylene-vinyl acetate copolymer, supercritical CO2, phase equilibrium, solubility, dispersing, SEDS method, crystallization

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