季铵化聚乙烯亚胺的缓蚀与杀菌性能研究

制备了季铵化的聚乙烯亚胺(QPEI),采用静态挂片失重法研究了在0.5mol/L硫酸溶液中QPEI对低碳钢的缓蚀性能;以大肠杆菌(E.coli)为致病菌体,采用平板活菌记数法研究了QPEI的抗菌活性,并使用TTC-脱氢酶活性测定法,研究了QPEI的抗菌机理。结果表明,QPEI对低碳钢具有十分优良的缓蚀作用,同时具有很强的抗菌性能,其缓蚀作用抗菌作用基于杀菌过程,而不只是抑菌过程。

Studies on corrosion inhibition property and antimicrobial ability of quaternary polyethyleneimine

Quaternary Polyethyleneimine(QPEI) was prepared and the corrosion inhibition property of QPEI for low carbon steel which was dipped in aqueous solution of H2SO4 of 0.5mol/L were mainly investigated by using weight-loss method,and the antimicrobial ability of this polymeric quaternary ammonium salt was researched with the method of plate counting live bacterium by using Escherichia Coli as a disease-leading bacterium.The antimicrobial mechanism of QPEI was studied more deeply via measuring the activities of TTC-dehydrogenase.The experiment results show that QPEI possesses excellent corrosion inhibition property and very strong antimicrobial ability.The results of measuring activities of TTC-dehydrogenase show that the antimicrobial mechanism of QPEI is based on a sterilizing bacterium process,and not only is based on a restraining action.