The Forming Mechanism and Rheological Properties of Two-component Supramolecular Gel Materials

被引：0
|
作者：
Xue M. [1 ]
Zhang X. [1 ]
Liu L. [1 ]
Chang W. [1 ]
Li B. [1 ]
机构：
[1] School of Chemical Engineering, Xi'an University, Xi'an
来源：
Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Self-assembly; Substituted aromatic carboxylic acids; Supramolecular materials; Thixotropic property; Two-component gels;
D O I：
10.11896/cldb.20010065
中图分类号：
学科分类号：
摘要：
Three aromatic carboxylic acids, DCn(n=14, 16, 18), were synthesized, and their gelation behaviors with ethanediamine (EDA) were tes-ted in different solvents. The gelation tests revealed that DCn+EDA(1: 1) could form two-component supramolecular gels in some solvents with high polarity(H2O, DMF, DMSO). The microstructures of two-component gels were obtained via SEM, and FT-IR spectroscopy studies showed that the carboxylate formed by DCn and EDA gelated the solvents. X-ray diffraction (XRD) analysis revealed that in two-component gels, DC16+EDA(1: 1) took a hexagonal packing mode. On the basis of the results of IR and XRD analysis, a possible multi-stage self-assembly process for the two-component gels was proposed. The rheological studies showed that DC18+EDA/DMF gel had a good tolerance to external forces and possessed a reversible thixotropic property. © 2021, Materials Review Magazine. All right reserved.
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页码：8201 / 8206
页数：5
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