Cailiao gongcheng (Mar 2019)

Novel antibacterial agent prepared by poly (hexamethylene guanidine hydrochloride) functionalized hollow nano-silica

  • ZHANG Zi-wen,
  • ZHANG Kang-min,
  • YANG Jian-jun,
  • WU Qing-yun,
  • WU Ming-yuan,
  • ZHANG Jian-an,
  • LIU Jiu-yi

Journal volume & issue
Vol. 48, no. 3
pp. 40 – 46

Abstract

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A simple synthetic method of poly(hexamethylene guanidine hydrochloride) grafted hollow nano-silica (HSN-PHMG), a novel antibacterial material, was proposed. The water dispersibility and antibacterial property of HSN grafting of PHMG were improved. The hollow structure of nano-silica was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analysis were used to characterize the successful grafting of PHMG and the mass fraction of PHMG is about 9.5% in HSN-PHMG. Antibacterial test using Escherichia coil (E.coil) and Staphylococcus aureus (S.aureus) as test strains and the results show that the minimum inhibitory concentration (MIC) of HSN-PHMG on E.coil and S.aureus are all 32 mg/L; E.coil can be completely killed within 2 h when the concentration of HSN-PHMG is 64 mg/L.

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