Synchrotron-generated time-resolved fluorescence anisotropy studies of the segmental relaxation of poly(acrylic acid) and poly(methacrylic acid) in dilute methanolic solutions

Ian Soutar, Linda Swanson, Robert E. Imhof, Gary Rumbles

Research output: Contribution to journalArticle

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Abstract

The segmental relaxation of poly(acrylic acid), PAA, and poly(methacrylic acid), PMAA, in dilute methanolic solutions has been studied using time-resolved fluorescence anisotropy. The anisotropy data, as analyzed by a variety of data retrieval procedures, indicate that a single exponential function is sufficient in description of the relaxational behavior of these systems. The segmental motions of PAA and PMAA in methanol are characterized by rotational correlation times of ca. 1.3 and 4.2 ns, respectively.

Original languageEnglish
Pages (from-to)4399-4405
Number of pages7
JournalMacromolecules
Volume25
Issue number17
Publication statusPublished - Jan 1 1992

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carbopol 940
Synchrotrons
Acrylics
Anisotropy
Fluorescence
Acids
Exponential functions
Methanol
polymethacrylic acid
methacrylic acid

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Synchrotron-generated time-resolved fluorescence anisotropy studies of the segmental relaxation of poly(acrylic acid) and poly(methacrylic acid) in dilute methanolic solutions. / Soutar, Ian; Swanson, Linda; Imhof, Robert E.; Rumbles, Gary.

In: Macromolecules, Vol. 25, No. 17, 01.01.1992, p. 4399-4405.

Research output: Contribution to journalArticle

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