文献类型：期刊文献

英文题名：Rheological properties of water-soluble cross-linked xanthan gum

作者：Zhang, Hong[1];Fang, Bo[1];Lu, Yongjun[2];Qiu, Xiaohui[2];Jin, Hao[1];Liu, Yuting[2];Wang, Liwei[2];Tian, Meng[1];Li, Kejing[1]

机构：[1]East China Univ Sci & Technol, Res Ctr Chem Engn, Lab Chem Engn Rheol, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai, Peoples R China;[2]Petro China, Langfang Filial Res Inst Petr Explorat & Dev, Langfang, Peoples R China

年份：2017

卷号：38

期号：3

起止页码：361

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20164302957060);WOS:【SCI-EXPANDED(收录号:WOS:000387061500007)】；

基金：This project was granted financial support from the National High Technology Research and Development Program "863" Project of China (2013AA064801).

语种：英文

外文关键词：Xanthan gum; epichlorohydrin; crosslinking; rheological property

摘要：Water-soluble crossslinked xanthan gum (CXG) was prepared from xanthan gum (XG) and epichlorohydrin under alkaline condition by ethanol solvent method. Rheological properties and heat resistance performance of different concentrations of aqueous XG and CXG solutions were investigated. The results showed that the apparent viscosity of 4g center dot L-1 CXG solution was 2.57 times that of 4g center dot L-1 XG solution. The storage modulus G and the loss modulus G of CXG solutions were greater than those of XG solutions, and viscoelastic and thixotropic properties were more significant in CXG solutions. At 80 degrees C, these two solutions were sheared at 170s(-1) for 90 minutes, the reserved viscosity was 32.30 and 62.15 mPa center dot s for XG and CXG solutions, respectively. The heat resistance performance of CXG solution was better than that of XG solution. Nonlinear co-rotational Jeffreys model could be applied to describe the flow curves of XG and CXG solutions correctly, and the calculated values were in good agreement with the experimental data.