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УДК: 535.31, 681, 2.738, 584-14
Orientational order in poly-N-vinylpyrrolidone films
Full text «Opticheskii Zhurnal»
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Publication in Journal of Optical Technology
Михайлова Н.А., Кононов А.И. Ориентационный порядок в пленках поли-N-винилпирролидона // Оптический журнал. 2014. Т. 81. № 11. С. 108–111.
Mikhailova N.A., Kononov A.I. Orientational order in poly-N-vinylpyrrolidone films [in Russian] // Opticheskii Zhurnal. 2014. V. 81. № 11. P. 108–111.
N. A. Mikhaĭlova and A. I. Kononov, "Orientational order in poly-N-vinylpyrrolidone films," Journal of Optical Technology. 81(11), 701-703 (2014). https://doi.org/10.1364/JOT.81.000701
When a polarized ray is obliquely incident on a film, rotating the film around an axis perpendicular to its surface results in birefringence, which is studied in this paper. Surface birefringence in polyvinylpyrrolidone films was investigated as a function of the angle of incidence of light and the film thickness. The results made it possible to estimate the orientational-order parameter of segments of the polyvinylpyrrolidone macromolecules in the near-surface layers, as well as to compare the orientational order as a function of the length of a statistical segment of the chains of the polymer studied here with the orientational order of polystyrene molecules.
films, birefringence, polarized light, orientational order
OCIS codes: 230.0230; 230.3720
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