Impact of nano-ZnO/grafted textile on the outer membrane permeability of some pathogenic bacteria

Bulletin of Materials Science

关键词: Textile;    chitosan;    HEMA;    ZnO nanoparticles;    FTIR;    SEM;    pathogenic bacteria.;   

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Cotton textile grafted by chitosan hydroxyethyl methacrylate has been prepared by gamma radiation as a polymeric stabilizer for ZnO nanoparticles (NPs). The grafting percent and swelling property of the prepared grafted polymer in bi-distilled water were studied and the results showed that the swelling percent of the plain textile is higher than that of all different compositions. The morphology and structure of plain textile, grafted textile and nano-ZnO/grafted textile were examined by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FT-IR). The presence of ZnO in the prepared samples was examined by energy-dispersive X-ray spectroscopy (EDX) and X-ray diffraction (XRD). The particle size of the formed ZnO NPs has been estimated by transmission electron microscopy (TEM). The results indicate the nanoscale of the ZnO particles. Nano-ZnO/grafted textile was tested against some pathogenic strains, and the results show that the nano-ZnO/grafted textile was able to attenuate bacterial growth of MRSA and Klebsiella pneumoniae after 24 h of direct contact. Also, release of potassium ions, loss of absorbing materials and decrease of membrane surface potentialwere noticed, indicating alteration of cell membrane permeability. Furthermore, SEM observation showed bacterial cell deformation for growth on the nano-ZnO/grafted textile. These results have been promising in the antibacterial field.

【 授权许可】

CC BY