Rheological monitoring of the formation of polyvinyl alcohol–Congo Red gels
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions of the Chemical Society
- Vol. 57, 92-100
- https://doi.org/10.1039/dc9745700092
Abstract
The formation of polyvinyl alcohol (PVA)-Congo Red (CR) gels has been followed rheologically. These gels are almost purely elastic, their storage modulus G′ is entropically determined. The time dependency of G′ has been used to analyze the kinetics of the gelling process. The network build-up proceeds in two stages, the first of which being the formation of a superstructure in the PVA molecule. The main function of CR is the promotion of this superstructure formation.Keywords
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