Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (11): 1193-1198.DOI: 10.3724/SP.J.1077.2011.01193

• Research Paper • Previous Articles     Next Articles

Formation and Thermal Stabilities Research of Ionic Liquids/α-ZrP Antibacterial Materials

LI Dan, CHEN Yun-Fa   

  1. (Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China)
  • Received:2010-12-03 Revised:2011-03-04 Published:2011-11-20 Online:2011-11-11
  • Supported by:

    863 Program(2007AA061401)

Abstract: Three different ionic liquids/α-zirconium phosphonates (IL-ZrP) composites antibacterial materials were prepared by introducing quarternary ammonium type ionic liquids (1-hexadecyl-3-methylimidazolium bromide, C16MIMBr; hexadecyl dimethyl benzyl ammonium chloride, C16HDBACCl; hexadecyl trimethyl ammonium chloride, C16CTACCl) into the interlayer of α-zirconium phosphonates (α-ZrP). The structure, components and thermal stability of composites was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscope (FTIR), Thermogravimetric-Fourier transform infrared spectroscope analysis (TG-FTIR). XRD patterns show that the interlayer spacing of IL-ZrP are larger than the original α-ZrP. It represents that the ionic liquids are intercalated into the layer of α-ZrP. TG-FTIR shows that the mass fraction of C16MIMBr, C16HDBACCl and C16CTACCl in three IL-ZrP are 53.11wt%, 50.65wt% and 51.25wt%, respectively. The onset temperatures of the decomposition for C16MIMBr, C16HDBACCl and C16CTACCl are 174℃, 198℃ and 219℃, while the onset temperatures of the decomposition for C16MIMBr-ZrP, C16HDBACCl-ZrP and C16CTACCl-ZrP are 219℃, 225℃ and 263℃. The existing of α-ZrP improves the thermal stability of ionic liquids. Among the three IL-ZrP, the C16MIMBr-ZrP has excellent antibacterial activity, (i.e. within 24 h, the minimal inhibitory concentration of C16MIMBr pillared α-zirconium phosphonates against S. aureus and E. coli is less than 19 mg/L).

Key words: ionic liquids, α-ZrP, organic-inorganic composites, antibacterial activity

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