通过红外光谱探测聚四氟乙烯在 19°C 时的相变物理化学过程

IF 1.1 4区化学 Q4 CHEMISTRY, PHYSICAL

Doklady Physical Chemistry Pub Date : 2025-03-21 DOI:10.1134/S0012501625600135

V. A. Ryzhov

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Physical Chemistry of the Phase Transition at 19°C in Polytetrafluoroethylene as Probed by IR Spectroscopy

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Physical Chemistry of the Phase Transition at 19°C in Polytetrafluoroethylene as Probed by IR Spectroscopy

The spectra of the polytetrafluoroethylene crystal lattice at temperatures close to the solid-state phase transition (PT) in this partially crystalline polymer were measured and analyzed. The increased sensitivity of the spectral parameters of the bands of external translational and rotational modes in these spectra to crystal effects made it possible to assign the PT at 292 K (19°C) not only to structural reorganization, but also to subsequent orientational disordering of the crystal lattice at 304 K.

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来源期刊

Doklady Physical Chemistry 化学-物理化学

CiteScore

1.50

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Doklady Physical Chemistry is a monthly journal containing English translations of current Russian research in physical chemistry from the Physical Chemistry sections of the Doklady Akademii Nauk (Proceedings of the Russian Academy of Sciences). The journal publishes the most significant new research in physical chemistry being done in Russia, thus ensuring its scientific priority. Doklady Physical Chemistry presents short preliminary accounts of the application of the state-of-the-art physical chemistry ideas and methods to the study of organic and inorganic compounds and macromolecules; polymeric, inorganic and composite materials as well as corresponding processes. The journal is intended for scientists in all fields of chemistry and in interdisciplinary sciences.