Property analysis of organic modified montmorillonite by single molecule alkyl quaternary ammonium salts

X-ray diffraction (XRD), Fourier transform infrared spectrometer (FT-IR) and thermogravimetry (TG) analysis methods were applied to investigate the properties of organic modified montmorillonite by tetraethyl ammonium bromide (TMAB), tetraethyl ammonium bromide ((Et)4NB), molecular deposition filming flooding agent (MDFFA), dodecyl trim-ethyl ammonium bromide (DTAB) and hexadecyl trimethyl ammonium bromide (CTAB). The results show that TMAB, (Et)4NB and MDFFA have superior anti-swelling effect on montmorillonite, DTAB and CTAB make montmorillonite swelling. At the same concentration, the quantity of (Et)4NB or MDFFA which was adsorbed on montmorillonite is less than that of TMAB, DTAB or CTAB.