Double-stimuli responsive O/W emulsion gel based on a novel amidoamine surfactant.
A heat-induced O/W emulsion gel that undergoes a phase transition from sol to gel on heating was formed from the addition of aqueous HCl to a toluene solution of a long-chain amidoamine derivative (C18AA). The heat induced O/W emulsions are highly sensitive to temperature, and the sol-gel transition temperature could be simply controlled by adjusting the C18AA concentration. Interestingly, the sol-gel transition of the O/W emulsions was also very sensitive to pH. Thus, we have successfully prepared a novel double-stimuli responsive gel based on O/W emulsions consisting of C18AA and HCl.
Department of Industrial Chemistry, Tokyo University of Science, Japan.
Clara
C
Morita
Hiroki
H
Sugimoto
Yoshiro
Y
Imura
Takeshi
T
Kawai
D004655:Emulsions / Q000737:chemistry; D005782:Gels / Q000737:chemistry*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D044367:Phase Transition; D011073:Polyamines / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D014050:Toluene / Q000737:chemistry; D014867:Water / Q000737:chemistry
D004655:Emulsions; D005782:Gels; C531249:Poly(amidoamine); D011073:Polyamines; D012996:Solutions; D013501:Surface-Active Agents; D014867:Water; D014050:Toluene