Network viscoelastic behavior in poly„ethylene oxide... melts: Effects of temperature and dissolved LiClO4 on network structure and dynamic behavior

Abstract

The ‘‘wet gel’’ model used earlier to describe the results of dynamic light scattering studies of neat poly~ethylene oxide! ~PEO! melts has now been successfully applied to PEO-melt/LiClO4 solutions. The results of static light scattering and viscometry measurements along with measurements from dynamic light scattering revealed that with or without salt, the melt/gel was an overdamped system whose network diffusive relaxations were controlled by the damping liquid component of the gel. Important features of the melt/gel were significantly affected by the addition of LiClO4 . Examples of important changes included increases in the network mesh size even as ‘‘petrification’’ of the network by the salt rendered it less elastic. Nevertheless, for 1 K PEO melts the essential nature of the melt/gel remained uneffected. © 2002 American Institute of Physics. @DOI: 10.1063/1.1481059#

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Cite this paper

@inproceedings{Walter2002NetworkVB, title={Network viscoelastic behavior in poly„ethylene oxide... melts: Effects of temperature and dissolved LiClO4 on network structure and dynamic behavior}, author={Ramon Walter and James Selser and Morag K. Smith}, year={2002} }