Correlation between Physical Properties of 12-Hydroxystearic Acid Organogels and Hansen Solubility Parameters

被引:1
|
作者
Murakami, Yuya [1 ]
Uchiyama, Taisei [2 ]
Shono, Atsushi [1 ]
机构
[1] Tokyo Univ Sci, Fac Engn, Dept Ind Chem, 6-3-1 Nijuku,Katsushika Ku, Tokyo 1258585, Japan
[2] Tokyo Inst Technol, Inst Innovat Res, 2-12-1 Ookayama,Meguro Ku, Tokyo 1528550, Japan
关键词
Hansen solubility parameters; low-molecular-weight gelator; 12-hydroxystearic acid; organogel; rheology; SUPRAMOLECULAR GEL; MOLECULAR GELS; SOLVENT; GELATORS; GELATION;
D O I
10.3390/gels9040314
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The Hansen solubility parameter (HSP) is a useful index for reasoning the gelation behavior of low-molecular-weight gelators (LMWGs). However, the conventional HSP-based methods only "classify" solvents that can and cannot form gels and require many trials to achieve this. For engineering purposes, quantitative estimation of gel properties using the HSP is highly desired. In this study, we measured critical gelation concentrations based on three distinct definitions, mechanical strength, and light transmittance of organogels prepared with 12-hydroxystearic acid (12HSA) and correlated them with the HSP of solvents. The results demonstrated that the mechanical strength, in particular, strongly correlated with the distance of 12HSA and solvent in the HSP space. Additionally, the results indicated that the constant volume-based concentration should be used when comparing the properties of organogels to a different solvent. These findings are helpful in efficiently determining the gelation sphere of new LMWGs in HSP space and contribute to designing organogels with tunable physical properties.
引用
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页数:14
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