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Tetradecyldimethylbenzyl ammonium salt(TDMBA) cations were intercalated into sodium montmorillonite (Na-MMT) by an ion exchange reaction.The resulting TDMBA-MMT was characterized by Fourier-transform infrared spectroscopy(FTIR),thermogravimetric analysis(TGA),and X-ray diffraction(XRD).Moreover,the antibacterial activity and water-resistance of TDMBA-MMT were investigated.The results show that TDMBA cations are intercalated into the Na-MMT.The onset temperature of decomposition of TDMBA cations in TDMBA-MMT is raised about 60℃higher than that of tetradecyldimethylbenzyl ammonium chloride(TDMBACl),and the d_((001)) spacing enlarged from 1.23 nm to 2.10 nm.0.1 mg/mL TDMBA-MMT is fully enough to kill all the Staphylococci aureus(S.aureus) and more than 99.99%of the Escherichia coli(E.coli) in a sample solution within 6.0 h touch,and the TDMBA-MMT also shows long acting properties.
The resulting TDMBA-MMT was characterized by Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). More over, the antibacterial activity and water-resistance of TDMBA-MMT were investigated. The results show that TDMBA cations are intercalated into the Na-MMT.The onset temperature of decomposition of TDMBA cations in TDMBA-MMT is raised about 60 ° C higher than that of tetradecyldimethylbenzyl ammonium chloride (TDMBAC1), and the d_ ((001)) spacing enlarged from 1.23 nm to 2.10 nm.0.1 mg / mL TDMBA-MMT is fully enough to kill all the Staphylococci aureus ) and more than 99.99% of the Escherichia coli (E. coli) in a sample solution within 6.0 h touch, and the TDMBA-MMT also shows long acting properties.