Abstract
The ATR IR spectra of solutions of atactic polystyrene in chloroform at the boundary with KRS-5 glass in the ranges 2800–3100 and 1550–1650cm−1 are studied. It is shown that the parameters of orientation Σ and polarizability anisotropy α′ p − α′ s of macromolecules estimated from the absorption and refractive indexes and the average complex polarizability of polystyrene boundary layers on KRS-5 vary in an extremum manner with the concentration of polystyrene in a solution. For dilute polystyrene solutions, a high degree of orientation of chains adsorbed on the glass surface is found. The inversion of the sign of polarizability anisotropy α′ p − α′ s and an increase in orientation parameter Σ of macromolecules in boundary layers on KRS-5 are associated with the compression and interpenetration of coils during the transition from semidilute to concentrated solutions of polystyrene.
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Original Russian Text © A.N. Krasovskii, D.V. Novikov, N.A. Osmolovskaya, S.V. Borisova, 2012, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2012, Vol. 54, No. 6, pp. 851–858.
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Krasovskii, A.N., Novikov, D.V., Osmolovskaya, N.A. et al. ATR IR spectra and structure of boundary layers of atactic polystyrene. Polym. Sci. Ser. A 54, 451–458 (2012). https://doi.org/10.1134/S0965545X12060041
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DOI: https://doi.org/10.1134/S0965545X12060041