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China Surfactant Detergent & Cosmetics ›› 2017, Vol. 47 ›› Issue (11): 627-632.doi: 10.13218/j.cnki.csdc.2017.11.006

• Development and application • Previous Articles     Next Articles

Preparation of modified montmorillonite and its function for stabilizing
Pickering emulsions in cooperation with alginic acid derivative

HU De-ping1, ZHANG Xue-qin1, DAI Zi-hao1, CHEN Xiu-qiong2, YAN Hui-qiong1,2, LIN Qiang1   

  1. 1.Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education,Hainan Normal University,Haikou, Hainan 571158,China;
    2.Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province, Haikou,Hainan 571158,China
  • Received:2017-08-21 Published:2019-03-21

Abstract: The intercalating modified montmorillonite (CMMT) was prepared by wet type ball mill process with montmorillonite (MMT) as basic material and hexadecyltrimethylammonium bromide (CTAB) as hydrophobic modifying agent.Then the product CMMT was characterized by SEM,zeta potential analyzer,FT-IR,XRD,TEM and TGA.Furthermore,stable Pickering emulsions were prepared by CMMT in cooperation with amphiphilic alginic acid derivative (Ugi-Alg),and then the effect of the CMMT that modified with varied amount of CTAB on the stability of Pickering emulsion was investigated.Experimental results show that the CTAB is intercalated into the lamella interlayers of MMT micro-particulates by the mechanical action of the ball mill.Ugi-Alg is adsorbed on surface of the CMMT,that enhancing the aggregation capacity of the CMMT particulates at the oil-water interface.When the addition amount of CTAB is 1.0CEC,the charge of CMMT particulates is at the lowest while the emulsion stability is the highest.

Key words: hexadecyltrimethylammonium bromide, montmorillonite, wet ball mill, Pickering emulsion

CLC Number: 

  • O648.2+3