双组分超分子凝胶材料的形成机理及流变性能

doi:10.11896/cldb.20010065

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Abstract 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.

Key words： two-component gels supramolecular materials substituted aromatic carboxylic acids self-assembly thixotropic property

Published: 10 May 2021

CLC number:

O648

Fund:National Natural Science Foundation of China (21403166), the Natural Science Foundation of Shaanxi Province (2020JQ-890), and Science and Technology Program of Xi'an (2017CGWL01), College Students' Innovation and Entrepreneurship Training Program (S201911080057).

About author:: Min Xue received her Ph. D. degree in material science in June 2009 from Shaanxi Normal University. She is currently an associate professor in School of Chemical Engineering, Xi'an University. Her research interests are in low-molecular-mass gels, the synthesis of organic ligands and the preparation and properties of metallogels, the preparation and properties of functional coordination compounds.

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	XUE Min
	ZHANG Xiang
	LIU Lu
	CHANG Wenhao
	LI Beibei

Cite this article:

XUE Min,ZHANG Xiang,LIU Lu, et al. The Forming Mechanism and Rheological Properties of Two-component Supramolecular Gel Materials[J]. Materials Reports, 2021, 35(8): 8201-8206.

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http://www.mater-rep.com/EN/10.11896/cldb.20010065 OR http://www.mater-rep.com/EN/Y2021/V35/I8/8201

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