Stretchable calix[4]arene-based gels by induction of water |
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| Authors: | Jaehyeon Park Sukyoung Kim Shim Sung Lee Jong-Hyun Kim Joung-Man Park Ji Ha Lee Jong Hwa Jung |
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| Affiliation: | 1. Department of Chemistry and Researc, Institute of Natural Sciences Gyeongsang National University, 501 jinjudaero, Jinju, Republic of Korea;2. Department of Materials Engineering and Convergence Technology, Gyeongsang National University, 501 jinjudaero, Jinju, Republic of Korea;3. Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima, Japan |
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| Abstract: | This study focused on controlling the stretching property of gels. This resilience is dependent on the water content in the calix4]arene-based gel solvent system, where the stretching property of gels could be controlled upon the addition of water. The storage (G′) and loss (G″) moduli of the calix4]arene-based gels prepared in solvent systems with different water contents were investigated via rheological measurements. By the strain sweeps, the values of G′ decreased, while tan-delta increased with water content in the solvent system. In addition, a significant changes in the G′ and G″ values were observed upon the addition of water by frequency sweeps. In particular, the decrease in the G″ value of the gel prepared from the 1,3-alternated calix4]arene derivative ( HC4 ) and diisocyanate linker ( HDI ) in DMSO/H2O mixed solvent (8:2 v/v) was approximately 5-fold larger than that of the gel prepared in 100% DMSO. Thus, this novel approach would useful for the development of new soft materials with finely controllable mechanical properties. |
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| Keywords: | crosslinking gels mechanical properties rheology |
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