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Authors:
Harms, Stephan; Rätzke, Klaus; Faupel, Franz; Chaukura, N.; Budd, P. M.; Egger, Werner; Ravelli, Luca 
Document type:
Zeitschriftenartikel / Journal Article 
Title:
Aging and free volume in a polymer of intrinsic microporosity (PIM-1) 
Journal:
Journal of Adhesion 
Volume:
88 
Issue:
Year:
2012 
Pages from - to:
608-619 
Language:
Englisch 
Keywords:
free volume ; polymeric membranes ; aging ; thin films ; positron annihilation lifetime ; spectroscopy ; polymers of intrinsic microporosity 
Abstract:
There is a growing market for polymeric gas separation membranes for applications such as air separation and carbon dioxide capture. One of the key properties dominating transport is the free volume between atoms, allowing gas diffusion. However, thin films, in particular, undergo aging, decreasing free volume, and, hence, performance with time. We have measured the change in free volume during aging of thin films of a polymer of intrinsic microporosity (PIM-1) by depth-resolved positron annihil...    »
 
ISSN:
0021-8464 
Department:
Fakultät für Luft- und Raumfahrttechnik 
Institute:
LRT 2 - Institut für angewandte Physik und Messtechnik 
Chair:
Dollinger, Günther 
Open Access yes or no?:
Nein / No