文献类型：期刊文献

英文题名：Rheological and microrheological characterization of a novel amphoteric xanthan gum

作者：Liu, Shuang[1];Zhang, Hong[1];Fang, Bo[1];Lu, Yongjun[2];Qiu, Xiaohui[2];Zhai, Wen[2];Wang, Liwei[2];Li, Kejing[1]

机构：[1]East China Univ Sci & Technol, Lab Chem Engn Rheol, Res Ctr Chem Engn, 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：2018

卷号：39

期号：7

起止页码：1018

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20174304299447);WOS:【SCI-EXPANDED(收录号:WOS:000433545600013)】；

语种：英文

外文关键词：Amphoteric xanthan gum; gel-breaking; microrheology; rheological property

摘要：A novel amphoteric xanthan gum (AXG) containing anionic carboxyl groups and cationic quaternary ammonium substituents was prepared from xanthan gum (XG) and 3-chloro-2-hydroxypropyltriethanolammonium acetate. The rheological and microrheological properties of AXG and XG solutions were studied in this work. The rheological results showed that the apparent viscosity of the 0.4% AXG solution was 5.26 times that of the 0.4% XG solution, and the AXG solution exhibited more obvious thixotropy and much stronger viscoelasticity than the XG solution. Both experiment and numerical simulations were adopted to investigate the gel-breaking process of the AXG solution, and the rheokinetics equations can well describe the evolution of complex viscosity. Moreover, the optical microrheology method was also adopted to investigate the microrheological behavior of AXG and XG solutions. The microrheological results showed that the AXG solution exhibited higher viscosity index at zero shear and a more obvious solid-like behavior than the XG solution. Good agreement is found when comparing the results obtained from microrheology to classical rheology, which verifies the feasibility of the microrheology method for measuring the solution properties, especially some properties not well described by the current rheological approach. [GRAPHICS] .