Natural bentonite was changed from hydrophilic to organophilic with the cationic surfactant of Hexadecyltrimethylammonium bromide(CTAB),and organobentonite was obtained.

• 用阳离子表面活性剂十六烷基三甲基溴化铵(CTAB)改性天然膨润土；得到有机改性的膨润土.