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Control of crystallization in supramolecular soft materials engineering

Li, Jing-Liang, Yuan, Bing, Liu, Xiang-Yang, Wang, Rong-Yao and Wang, Xun-Gai 2013, Control of crystallization in supramolecular soft materials engineering, Soft matter, vol. 9, no. 2, pp. 435-442.

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Title Control of crystallization in supramolecular soft materials engineering
Author(s) Li, Jing-Liang
Yuan, Bing
Liu, Xiang-Yang
Wang, Rong-Yao
Wang, Xun-Gai
Journal name Soft matter
Volume number 9
Issue number 2
Start page 435
End page 442
Total pages 8
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2013
ISSN 1744-683X
1744-6848
Summary As one class of the most important supramolecular functional materials, gels formed by low molecular weight gelators (LMWGs) have many important applications. The key important parameters affecting the in-use performance of a gel are determined by the hierarchical fiber network structures. Fiber networks consisting of weakly interacting multiple domains are commonly observed in gels formed by LMWGs. The rheological properties, particularly the elasticity, of a gel with such a fiber network are weak due to the weak interactions between the individual domains. As achieving desirable rheological properties of such a gel is practically relevant, in this work, we demonstrate the engineering of gels with such a type of fiber network by controlling crystallization of the gelator. Two example gels formed by a glutamic acid derivative in a non-ionic surfactant Tween 80 and in propylene glycol were engineered by controlling the thermodynamic driving force for crystallization. For a fixed gelator concentration, the thermodynamic driving force was manipulated by controlling the temperature for fiber crystallization. It was observed that there exists an optimal temperature at which a gel with maximal elasticity can be fabricated. This will hopefully provide guidelines for producing high performance soft materials by engineering their fiber network structures.
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30057692

Document type: Journal Article
Collections: Institute for Frontier Materials
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.