Control of the rheological properties of clay nanosheet hydrogels with a guanidinium-attached calix[4]arene binder.
A 1,3-alternate calix[4]arene derivative 1 possessing four guanidinium moieties was synthesized as a molecular binder. The clay nanosheet (CNS) hydrogels were prepared upon addition of 1 and sodium polyacrylate (ASSP), and their mechanical properties were measured by rheometry. CNS hydrogels prepared by combining calix[4]arene 1 with dispersed CNSs surrounded by ASSPs showed an enhancement of mechanical properties such as viscosity and elasticity.
Department of Chemistry and Research Institute of Natural Sciences Gyeongsang National University, Jinju 660-701, Korea. jonghwa@gnu.ac.kr.
Ji Ha
JH
Lee
Chaelin
C
Kim
Jong Hwa
JH
Jung