Journal article
Raman spectroscopic studies of poly(oxyethylene) chain conformations in non-ionic surfactants
Journal of the Chemical Society, Faraday Transactions 1, Vol.82(3), pp.597-605
1986
Abstract
Raman spectra of polydisperse alkylphenolpoly(oxyethylene) surfactants have provided evidence for two dominant conformations, viz. a helical or coil conformation, common to all poly(oxyethylene) materials, and a zig-zag conformation associated with the presence of the phenol aromatic ring. Band shape analyses support a liquid-structure model based on ordered conformations existing in crystallite zones. The zig-zag conformation appears to decrease in proportion with increasing addition of H2O until a plateau is attained at > 33% H2O content. This decrease is expected to be associated with chain hydration. Gel formation at ca. 50% H2O is accompanied by a sharp peak in depolarization ratios of the zig-zag band at 802 cm-1 over the concentration interval 45-55% H2O, which has been interpreted in terms of laser polarization scrambling by randomly oriented, but internally ordered crystallite zones. Evidence is found for conformation equilibria in low-temperature (77 K) and elevated-temperature (370 K) studies of surfactants.
Details
- Title
- Raman spectroscopic studies of poly(oxyethylene) chain conformations in non-ionic surfactants
- Authors
- John R Bartlett (Author)R P Cooney (Author)
- Publication details
- Journal of the Chemical Society, Faraday Transactions 1, Vol.82(3), pp.597-605
- Publisher
- Royal Society of Chemistry (R S C) Publications
- Date published
- 1986
- DOI
- 10.1039/F19868200597
- ISSN
- 0300-9599
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99448644102621
- Output Type
- Journal article
Metrics
4 File views/ downloads
737 Record Views