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Complexation of Poly(vinyl alcohol)-Congo Red Aqueous Solutions. 1. Viscosity Behavior and Gelation Mechanism

✍ Scribed by Shibayama, Mitsuhiro; Ikkai, Fumiyoshi; Moriwaki, Ryuji; Nomura, Shunji

Book ID
126399105
Publisher
American Chemical Society
Year
1994
Tongue
English
Weight
750 KB
Volume
27
Category
Article
ISSN
0024-9297

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Complexation of poly(vinyl alcohol)–cong
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Mesoscopic structures of poly(viny1 alcohol)-Congo red (PVA-CR) complexes in aqueous solutions were investigated in terms of dynamic light scattering (DLS) technique. The intensity-intensity time correlation function, g"'(t), was analyzed with an equation including a single and a stretched exponenti

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The reduced viscosity, qr, of poly(vinyl alcohol)-Congo red (PVA-CR) complexes in aqueous solution has some unique features, such as (1) an appearance of a maximum at a given PVA concentration (CpvA) and (2) a time evolution ofqa, but only in the regime where the maximum appears. These characteristi