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Real-time observation of fiber network formation in molecular organogel : supersaturation-dependent microstructure and its related rheological property

Wang, Rongyao, Liu, Xiang-Yang, Xiong, Junying and Li, Jingliang 2006, Real-time observation of fiber network formation in molecular organogel : supersaturation-dependent microstructure and its related rheological property, The journal of physical chemistry b, vol. 110, no. 14, pp. 7275-7280, doi: 10.1021/jp054531r.

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Title Real-time observation of fiber network formation in molecular organogel : supersaturation-dependent microstructure and its related rheological property
Author(s) Wang, Rongyao
Liu, Xiang-Yang
Xiong, Junying
Li, JingliangORCID iD for Li, Jingliang orcid.org/0000-0003-0709-2246
Journal name The journal of physical chemistry b
Volume number 110
Issue number 14
Start page 7275
End page 7280
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2006
ISSN 1520-6106
1520-5207
Summary Low-molecular mass organic gelators self-organizing into three-dimensional fiber networks within organic solvents have attracted much attention in recent years. However, to date, how the microstructure of fiber network is formed in a gelation process and the key factors that govern the topological structure of a gel network remain to be determined. In this work, we address these issues by investigating the in situ formation of the gel networks in the N-lauroyl-l-glutamic acid di-n-butylamide (GP-1)/propylene glycol (PG) system. By using optical microscopy, the time evolution of the gel network microstructure was investigated under various supersaturation conditions. It is found that supersaturation is one of the key factors that govern the topological structure of a gel network. In particular, the creation of the junctions turns out to be supersaturation-dependent. The rheological experiments further revealed the correlation between topological structure and mechanical properties. It suggests that the rheological properties can be effectively modified by tuning the microstructure topology of the gel network. Our results reported here provide new physical insight into the formation kinetics of a molecular gel. Furthermore, this work could be important in constructing and engineering a supramolecular structure for the purpose of applications.
Language eng
DOI 10.1021/jp054531r
Field of Research 091205 Functional Materials
030603 Colloid and Surface Chemistry
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039270

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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