Local Rigidity as a Criterion of Gas Permeation of Polymer and Composition Materials; PAL and TSL Experiments

• Authors: V. Shantarovich , V. Gustov , E. Belousova , A. Polyakova , V. Bekeshev , I. Kevdina , Yu. Yampolskii , A. Pastukhov
• Languages of publication: EN

Abstracts

EN

Various commercial and industrial properties of polymeric materials can be developed by the way of purposeful synthesis. For example, there are polymeric materials of extremely developed intrinsic microporosity. In attempts to further develop membrane properties (permeability and selectivity), the researchers artificially increase the pore sizes by various external influences, such as plastification by saturation of polymers with gases, sometimes in supercritical state, filling of a polymer with some non-organic components (zeolites). Sometimes, porosity of the composition appears to become higher than that of the components. This porosity, in difference with intrinsic one, can be called externally affected. The reason of these phenomena is not always clear, and in order to get some ideas in this field we suggest an experimental study using a combination of the two genetically interconnected (by spur processes) methods: positron annihilation lifetime spectroscopy and thermostimulated luminescence. This paper summarizes recently published and completely new results of the authors in order to illustrate the benefits of this experimental approach.

Keywords

EN

61.41.+e; 61.43.Fs; 68.43.Vx; 78.70.Bj; 82.35.Lr

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 82.35.Lr: Physical properties of polymers
• 61.41.+e: Polymers, elastomers, and plastics(see also 81.05.Lg in materials science; for rheology of polymers, see section 83; for polymer reactions and polymerization, see 82.35.-x in physical chemistry and chemical physics)
• 68.43.Vx: Thermal desorption
• 61.43.Fs: Glasses

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 3
• Pages: 806-811

Dates

published

2014-03

Contributors

author

V. Shantarovich

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

V. Gustov

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

E. Belousova

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

A. Polyakova

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

V. Bekeshev

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

I. Kevdina

• Semenov Institute of Chemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, Russia

author

Yu. Yampolskii

• Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences Leninskii Prospect 29, Moscow 119991, Russia

author

A. Pastukhov

• Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow

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Identifiers

DOI

10.12693/APhysPolA.125.806