文献类型：期刊文献

中文题名：Rheological behavior of PMVE-MA aqueous solution with metallic cations

作者：Xiaoping DONG[1];Li LI[1];Jun XU[1];Xuhong GUO[1]

机构：[1]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

年份：2011

卷号：5

期号：1

起止页码：126

中文期刊名：Frontiers of Chemical Science and Engineering

外文期刊名：化学科学与工程前沿（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2011_2012】；PubMed;

基金：The authors gratefully acknowledged the“111”Project(Grant No.B08021);Shanghai Pujiang Talent Project 08PJ14036 for support of this work.

语种：英文

中文关键词：poly(methyl vinyl ether-co-maleic anhydride);shear-thickening;gel point;rheology

摘要：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 shearthickening 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.