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首页> 外文期刊>Journal of thermal analysis and calorimetry >Polyvinylpyrrolidone thin film pyrolysis as accessed by the real-time optical transmission measurements
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Polyvinylpyrrolidone thin film pyrolysis as accessed by the real-time optical transmission measurements

机译:Polyvinylpyrrolidone thin film pyrolysis as accessed by the real-time optical transmission measurements

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摘要

Present results reveal basic features of the optical transmission thermo-analytical method in its employment to investigate the oxidative pyrolysis of supported thin polyvinylpyrrolidone films. The OT curves naturally vary in shapes and positions on the time/temperature scales, respective to the examined rate of sample heating, to the wavelengths of radiation as well as to the film thickness. Recorded OT curves exhibit characteristic shapes with well-expressed OT minima. The temperatures at which the OT minima appear are in a linear relationship with heating rates of samples, at a frequency of radiation as well as a film thickness kept constant. Similarly, the OT values at which the OT minima appear are in a linear relationship with film thickness, at a frequency of the radiation and sample heating rate unchanged.

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