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An investigation of a sol-gel/melt transition: The poly(ethyleneoxide)/methanol/LiClO4 system

J. Chem. Phys. 120, 8841 (2004); doi:10.1063/1.1697386

Issue Date: 8 May 2004

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Shufu Peng, J. C. Selser, R. Bogoslovov, and G. Piet
Department of Physics, University of Nevada, Las Vegas, Las Vegas, Nevada 89154-4002
The crossover behavior of 50 000 molar mass poly(ethylene oxide)/methanol solutions from dilute solution to the melt/gel was examined. At first this behavior was investigated without LiClO4 and then reexamined with LiClO4. To better understand this behavior, the dependencies of dynamic light scattering (specifically, photon correlation spectroscopy) measurement results on polymer concentration, on the scattering wave vector and on temperature, and the dependence of static light scattering results on the scattering wave vector were studied. This study produced interesting and important results about network structure and behavior in poly(ethylene oxide) solutions and melts generally and about the effects of LiClO4 on this structure and behavior more particularly. ©2004 American Institute of Physics.
History: Received 2 September 2003; accepted 16 February 2004
Permalink: http://link.aip.org/link/?JCPSA6/120/8841/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.35.+c
    Brillouin and Rayleigh scattering; other light scattering (condensed matter)
  • 61.25.Hq
    Structure of macromolecular and polymer solutions, and polymer melts; swelling
  • 82.70.Gg
    Gels and sols
  • 64.70.Ja
    Liquid–liquid transitions
  • YEAR: 2004

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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