Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (3): 843.doi: 10.7503/cjcu20200433

• Physical Chemistry • Previous Articles     Next Articles

Admicelles and Adsolubilization of Extended Surfactants on Alumina

HU Xueyi, HAN Lulu, FANG Yun(), XIA Yongmei   

  1. Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,China
  • Received:2020-07-06 Online:2021-03-10 Published:2021-03-08
  • Contact: FANG Yun E-mail:yunfang@126.com
  • Supported by:
    ? Supported by the National Key Research and Development Program of China(2017YFB0308904)

Abstract:

A series of sodium linear alkyl polyoxypropylene ether sulfates(CcPpS, c=8 or 16, p=9; c=12, p=3, 6 or 9) was synthesized and structurally identified to investigate the formation of admicelles of extended surfactants on alumina and the related adsolubilization. The formation of bilayer admicelles of C12P9S on alumina was identified by the adsolubilization result of cationic dye methylence blue(MB) in comparison with sodium dodecyl ether sulfate(SDS), but the adsorption capacity of C12P9S and adsolubilization capacity of MB were both less than SDS for its rugby-shaped molecule caused by polyoxypropylene(PPO) spacer. On the contrary, C12P9S@Al2O3 showed stronger adsolubilization capacities of weak polar PA molecules and water-insoluble ST molecules than those of SDS evidently. Moreover, the adsolubilization capacity of PA by C12P9S@Al2O3 was 8.5 times of SDS@Al2O3, which means that PA molecules were adsolubilized as expected in the swollen PPO domains in bilayer admicelles of C12P9S on alumina, and makes extended surfactant modified alumina potential application prospects in some fields such as wastewater treatment and drug delivery systems.

Key words: Extended surfactant, Alumina, Adsorption, Bilayer admicelle, Adsolubilization

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