Synthesis of a castor oil-based quaternary ammonium surfactant and its application in the modification of attapulgite. Yan, X., Xu, W., Shao, R., & Haddleton, D. M. TENSIDE SURFACTANTS DETERGENTS, 59(1):31–38, January, 2022. doi abstract bibtex Castor oil-based quaternary ammonium surfactant (COQA) was synthesized by an ester-exchange reaction of refined castor oil (CO) (raw material) with N,N-dimethyl ethanol amine followed by quaternization with epichlorohydrin (ECH). Its surface activity and structural features were determined. The critical micelle concentration (CMC) of the surfactant at 25 degrees C was 1.79 x 10(-3) mol/L. The surface tension of an aqueous COQA solution at CMC was 38.19 mN/m. Subsequently, the synthesized COQA was used to modify attapulgite (ATP) by binding it to the surface of ATP. The change in the morphology of the modified-ATP (M-ATP) was attributed to the presence of the COQA bound to the surface of the rod-shaped crystals, although the crystal structure of the silicate did not change. Compared to ATP, the microstructure of the M-ATP was less rigid.
@article{yan_synthesis_2022,
title = {Synthesis of a castor oil-based quaternary ammonium surfactant and its application in the modification of attapulgite},
volume = {59},
issn = {0932-3414},
doi = {10.1515/tsd-2021-2345},
abstract = {Castor oil-based quaternary ammonium surfactant (COQA) was synthesized by an ester-exchange reaction of refined castor oil (CO) (raw material) with N,N-dimethyl ethanol amine followed by quaternization with epichlorohydrin (ECH). Its surface activity and structural features were determined. The critical micelle concentration (CMC) of the surfactant at 25 degrees C was 1.79 x 10(-3) mol/L. The surface tension of an aqueous COQA solution at CMC was 38.19 mN/m. Subsequently, the synthesized COQA was used to modify attapulgite (ATP) by binding it to the surface of ATP. The change in the morphology of the modified-ATP (M-ATP) was attributed to the presence of the COQA bound to the surface of the rod-shaped crystals, although the crystal structure of the silicate did not change. Compared to ATP, the microstructure of the M-ATP was less rigid.},
number = {1},
urldate = {2022-01-30},
journal = {TENSIDE SURFACTANTS DETERGENTS},
author = {Yan, Xiuhua and Xu, Wei and Shao, Rong and Haddleton, David M.},
month = jan,
year = {2022},
pages = {31--38},
}
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