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      • KCI등재

        Electrospun non-leaching biocombatible antimicrobial cellulose acetate nanofibrous mats

        Rong Li,Xuehong Ren,Qianyuan Jiang,Zhiwei Xie,Tung-Shi Huang 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.27 No.-

        In this study cellulose acetate (CA) was modified with 4,40-diphenylmethane diisocyanate (MDI, an Nhalamineprecursor) in solution to form chemical bonds between CA and MDI to avoid the potentialrelease of biocides from CA. Nanofibers were obtained by electrospinning the CA–MDI solution. Theobtained CA–MDI nanofibers were characterized by FT-IR, SEM, TGA and DSC. TGA and DSC dataindicated that the CA–MDI nanofibers before and after chlorination had good thermal stability comparedwith CA nanofibers. 58% of active chlorine was lost after 2 h of UVA irradiation, and most of the activechlorine was lost after 4 h of UVA irradiation. However, about 85% of the chlorine could be regeneratedby rechlorination after 24 h of UVA irradiation. The active chlorine of the chlorinated nanofibers releasedslowly in water. The chlorinated CA–MDI nanofibers showed excellent antimicrobial properties againstEscherichia coli O157:H7 and Staphylococcus aureus within brief contact times. Also, the chlorinated CA–MDI nanofibers showed good biocompatibility.

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