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Stretchable calix[4] arene‐based gels by induction of water
Author(s) -
Park Jaehyeon,
Kim Sukyoung,
Lee Shim Sung,
Kim JongHyun,
Park JoungMan,
Lee Ji Ha,
Jung Jong Hwa
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.51235
Subject(s) - solvent , rheology , dynamic mechanical analysis , polymer chemistry , materials science , chemical engineering , strain (injury) , chemistry , organic chemistry , composite material , polymer , engineering , medicine
This study focused on controlling the stretching property of gels. This resilience is dependent on the water content in the calix[4]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 calix[4]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 calix[4]arene derivative ( HC4 ) and diisocyanate linker ( HDI ) in DMSO/H 2 O 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.