Excimer fluorescence technique for study of polymer-segment mobility: applications to pyrene-labelled poly(methyl methacrylate) and poly(methyl acrylate) in solution

An excimer fluorescence technique for the study of polymer-segment mobility has been developed and applied to pyrene-labelled poly(methyl methacrylate) and poly(methyl acrylate) polymers in solution. The results of the study have been interpreted in terms of Kramers' theory for the crossing of...

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Bibliographic Details
Published in:Polymer (Guilford) 1985-01, Vol.26 (7), p.1046-1052
Main Authors: Wang, Francis W., Lowry, Robert E.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
fluorescence spectroscopy
internal viscosity
Kramer's theory
Organic polymers
Physicochemistry of polymers
poly(methyl methacrylate)
polymer segment mobility
Properties and characterization
pyrene excimer
Structure, morphology and analysis
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Summary:An excimer fluorescence technique for the study of polymer-segment mobility has been developed and applied to pyrene-labelled poly(methyl methacrylate) and poly(methyl acrylate) polymers in solution. The results of the study have been interpreted in terms of Kramers' theory for the crossing of a potential barrier by a particle embedded in a viscous medium. The results show that the internal viscosity has a solvent-independent part and lead to an estimate of the dimensionless internal viscosity parameter introduced by Cerf.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(85)90227-7