聚六亚甲基胍盐酸盐功能化中空纳米二氧化硅制备新型抗菌剂的研究EI北大核心CSCD

提出一种新型抗菌材料聚六亚甲基胍盐酸盐(PHMG)接枝的中空纳米二氧化硅(HSN-PHMG)的简便合成方法,PHMG的接枝提高了HSN的水分散性和抗菌性。用扫描电镜(SEM)、透射电镜(TEM)表征纳米二氧化硅的中空结构;傅里叶变换红外光谱(FTIR)、X射线光电子能谱(XPS)和热失重分析(TGA)表征PHMG的成功接枝,HSN-PHMG中PHMG的质量分数约为9.5%;抗菌测试以大肠杆菌(E.coil)和金黄色葡萄球菌(S.aureus)为测试菌种。结果表明:HSN-PHMG对E.coil和S.aureus的最小抑菌浓度(MIC)均为32 mg/L;当HSN-PHMG的浓度为64 mg/L时可以在2 h内完全杀死E.coil。

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

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.