Effect Of Electret On Escherichia Coli And Its Prediction

The growth and reproduction of E.Coli is relatively simple,widely distributed,and great harm to humans and animals.Commonly used ultra-high pressure sterilization technology,low-temperature sterilization,pasteurization and other techniques to kill.Electret can be used in sterilization because it can keep a large amount of electric charge for a long time and can produce electrostatic effect.The preparation method of Electret,the mechanism of charge formation and the electrostatic effect of electret are studied.The effect of Electret on E.coli was studied by experiments.Under the same conditions,E.coli was treated with negative electret films of-2500 V,-1500 V AND-500 V and positive electret films of 2500 V,1500V and 500 V,respectively,the results show that the negative electret film can inhibit the normal growth of E.coli,the highest inhibition rate can reach 70.82%,the positive electret film can promote the growth of E.Coli,the promotion rate can reach 54.65%.Both negative and positive electret films affect the normal fractal growth of E.coli.Secondly,the application of fractal theory and fractal theory in bacteria research is studied.The DLA model of E.Coli fractal growth is well predicted by computer software C+ + and Matlab.Finally,the possible mechanism of electret film’s influence on the growth of E.coli is analyzed,which is mainly the effect of electrostatic field on the membrane potential of E.Coli,and then on the growth of E.coli.