Analysis of local mobility of polyvinylpyrrolidone macromolecule

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Abstract

An analysis of local mobility of macromolecule of polyvinylpyrrolidone is carried out by use of IR spectroscopy. The freezing temperature of local molecular mobility is determined and the type of relaxator is established. The secondary relaxation transition of polyvinylpyrrolidone is detected at the temperature of 235 K.

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About the authors

D. I. Kamalova

Kazan (Volga Region) Federal University

Author for correspondence.
Email: Dina.Kamalova@kpfu.ru
Russian Federation, Kazan

O. A. Kochurova

Kazan (Volga Region) Federal University

Email: Dina.Kamalova@kpfu.ru
Russian Federation, Kazan

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Supplementary files

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2. Fig. 1. IR Fourier spectrum of attenuated total internal reflection of polyvinylpyrrolidone in the region of 4000–400 cm-1.

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3. Fig. 2. Structural formula of the monomer unit of polyvinylpyrrolidone.

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4. Fig. 3. IR Fourier spectra of polyvinylpyrrolidone with the addition of 1,2-diphenylethane at temperatures: 173 (1), 233 (2) and 297 K (3).

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5. Fig. 4. Dependence of the logarithm of the ratio of optical densities of conformation-sensitive absorption bands on the reciprocal temperature for 1,2-diphenylethane in polyvinylpyrrolidone.

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