Positronium formation and thermostimulated luminescence: A common nature and combined application to studies of organic systems

Polymeric membrane materials with highly developed intrinsic microporosity for gas separation are studied. The porosity can be essentially improved by filling the polymer with nonorganic components (zeolites). This porosity, herein referred to as artificially induced, turned out, in some cases, to b...

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Published inRussian journal of physical chemistry. B Vol. 8; no. 4; pp. 559 - 565
Main Authors Shantarovich, V. P., Gustov, V. W., Belousova, E. V., Polyakova, A. V., Bekeshev, V. G., Kevdina, I. B.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.07.2014
Subjects
Chemical Physics of Polymer Materials
Chemistry
Chemistry and Materials Science
Physical Chemistry
positron
free volume
membrane materials
thermostimulated luminescence
annihilation
permeability
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Summary:Polymeric membrane materials with highly developed intrinsic microporosity for gas separation are studied. The porosity can be essentially improved by filling the polymer with nonorganic components (zeolites). This porosity, herein referred to as artificially induced, turned out, in some cases, to be higher than that of the constituent components. The reasons for this effect are not always clear. To gain additional insights into the nature of this effect, an experimental study is suggested with the use of a combination of two methods related by being based on track processes: positron annihilation lifetime spectroscopy PALS and thermostimulated luminescence (TSL). The present paper summarizes and discusses both recently published results and completely new data.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793114040095