Some insights into the microstructure of polypyrrole

Estimation of the molecular weight between crosslinks and determination of the average conjugation length in polypyrrole are reported. By applying the Flory equation to dimethylsulphoxide-swollen dedoped polymer, it was found that the molecular weight between crosslinks is larger than previously tho...

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Bibliographic Details
Published in:Polymer (Guilford) 1989-05, Vol.30 (5), p.914-917
Main Authors: Bradner, F.P., Shapiro, J.S., Bowley, H.J., Gerrard, D.L., Maddams, W.F.
Format: Article
Language:English
Subjects:
Applied sciences
conjugation length
Exact sciences and technology
molecular weight
Physicochemistry of polymers
Polymers and radiations
polypyrrole
Properties and characterization
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Summary:Estimation of the molecular weight between crosslinks and determination of the average conjugation length in polypyrrole are reported. By applying the Flory equation to dimethylsulphoxide-swollen dedoped polymer, it was found that the molecular weight between crosslinks is larger than previously thought and lies in the range of 25–65 pyrrole units. U.v. and resonance Raman spectroscopy indicate that the average conjugation length is short. The upper limit is about 6 pyrrole units.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(89)90192-4