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Diverse molecular weights of chitosan with wide range of Ag +  ions concentration are used to synthesize nanoparticles composite films using gamma irradiation from  60 Co as the main source. Nanoparticles composite films are exploited in different two approaches; electrical conductivity and antimicrobial activity. The effects of Ag +  concentration, chitosan molecular weight and exposure irradiation dose are examined on behavior of electrical conductivity and antimicrobial activity of  Escherichia coli  and  Staphylococcus aureus . The results showed that chitosan molecular weight, Ag +  concentration, and exposure irradiation dose have significant impact on electrical conductivity and antimicrobial activity.

polymer-plastics technology and materials

Gamma-rays synthesis, characterization, electrical conductivity, and antimicrobial activity of polyvinylpyrrolidone/chitosan/silver nanoparticles composite films