Bactericidal properties of functional polymer with chitosan-modified nanoparticles
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초록
내용
Preventing bacterial infection and proliferation has been a major concern due to the growing prevalence of infection by pathogenic germs. In this study, we prepared "chitosan-modified silica nanoparticles" (CMSNs) with reaction of chitosan and silica nanoparticles. Polyethylene (PE) was modified with CMSNs. Chemical structure of CMSN-PE was investigated by ATR-FTIR, and surface morphology of both bare PE and CMSN-PE was compared with SEM images. Bactericidal property was tested with both gram-negative and gram-positive bacteria. CMSN-PE shows ability of inhibiting bacterial growth by killing both Escherichia coli (E. coli) and Staphylococcus epidermidis (S. epidermidis). The bacteria populations of E. coli and S. epidermidis on CMSN-PE were reduced by more than 1 log units in comparison to pristine PE.