Paper Title:
Some Problems of the Free Volume Studies in Porous Polymers Using Positron Annihilation and Auxiliary Techniques
  Abstract

Membrane materials and polymer sorbents, polymers with highly developed free volume and specific surface, are of great technical importance. Positron annihilation lifetime (PAL) studies of these materials and some additional experiments give a chance to learn about the character of size distributions of elementary free volumes (EFV) of these materials. Particularly to answer the question whether the distributions of o-Ps lifetimes are of Gaussian type, as it is suggested in a number of publications, or they have some asymmetry or even some multi-component character, also to check some ideas on the ways of o-Ps trapping. In this aspect, large scale of o-Ps lifetimes (pore sizes) in these materials is very important, since enables comparison with the results of auxiliary techniques.

  Info
Periodical
Edited by
S. J. Wang, Z. Q. Chen, B. Wang and Y. C. Jean
Pages
155-160
DOI
10.4028/www.scientific.net/MSF.607.155
Citation
V. P. Shantarovich, V.W. Gustov, Y.P. Yampolskii, E.V. Belousova, A.V. Polyakova, M.K. Filimonov, "Some Problems of the Free Volume Studies in Porous Polymers Using Positron Annihilation and Auxiliary Techniques", Materials Science Forum, Vol. 607, pp. 155-160, 2009
Online since
November 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: P.C. Xia, Jin Jiang Yu, Xiao Feng Sun, Heng Rong Guan, Zhuang Qi Hu
Abstract:Effect of different aging temperatures on microstructure and stress rupture properties of DZ951 alloy were investigated in this paper. The...
1241
Authors: Jian Sun, Yan Xiang Wang, Xiao Yan Li
Abstract:TiO2 nanopowders were synthesized by solvothermal synthesis method. Effects of different solvents and dodecylbenzenesulfonic acid...
36
Authors: Yu Shuang Li, Xiao Jun Hu, Ji Song Yang, Xue Ying Song, Yong Xia Hou, Hong Liang Chen
Chapter 7: Pollution Control Project (Air, Water, Solid)
Abstract:Spills and leaks of petroleum hydrocarbons such as gasoline, diesel, motor oils, and similar materials have caused widespread contamination...
2802
Authors: Zhi Cong Meng, Takeshi Hashishin, Jun Tamaki, Kazuo Kojima
Chapter 6: Devices
Abstract:Four types of tungsten trioxide (WO3) particles (spherical, disk, cuboid, and hexagonal) were prepared and WO3 thick...
308
Authors: Marion Merklein, Maren Johannes, M. Biasutti, Michael Lechner
Chapter 5: Materials and Testing
Abstract:Complex material models used for the numerical representation of forming processes need in addition to tension and compression tests also...
317