Frontiers of Chemical Science and Engineering >
Rheological behavior of PMVE-MA aqueous solution with metallic cations
Received date: 28 Mar 2010
Accepted date: 16 May 2010
Published date: 05 Mar 2011
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The rheological properties of aqueous solutions of poly(methyl vinyl ether-co-maleic anhydride) (PMVE-MA) upon addition of metallic cations at different pH values were investigated. Sol-gel transition and shear-thickening phenomena at moderate shear rate were observed upon increasing the amount of metallic cations, especially for cupric cation. At certain molar ratio (fgel) of added cupric cations to carboxyl groups in PMVE-MA, the system became gel-like, and the storage modulus (G′) and loss modulus (G′′) were parallel and exhibited a power-law dependence on the frequency, which is consistent with Winter’s hypothesis of determining the gel point of a crosslinking system. The shear-thickening behavior depends on fgel, pH, metallic valence, and temperature.
Xiaoping DONG , Li LI , Jun XU , Xuhong GUO . Rheological behavior of PMVE-MA aqueous solution with metallic cations[J]. Frontiers of Chemical Science and Engineering, 2011 , 5(1) : 126 -130 . DOI: 10.1007/s11705-010-0548-z
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