Antibacterial Cellulose Composite Membranes Prepared in Ionic Liquid via Phase Inversion Method

doi:10.1007/s40242-017-6423-4

Abstract

Abstract:

Antibacterial cellulose/TiO₂ nanoparticles(CTM), cellulose/ZnO nanoparticles(CZM) and cellulose/chitosan(CCM) composite membranes were successfully prepared using ionic liquid(IL), 1-butyl-3-methylimidazolium chloride([BMIM]Cl), via phase inversion while[BMIM]Cl was recycled through evaporation and used to prepare cellulose membrane(CM-RILs). The pure water flux(PWF) was significantly increased via adding TiO₂, ZnO and chitosan to cellulose and a perfect retention value of 67000 bovine serum albumin(BSA) was achieved in all the prepared membranes. The bacterial reduction of cellulose/TiO₂ membrane, cellulose/ZnO membrane and cellulose/chitosan membrane with a blend ratio of 10:3[m(cellulose):m(additive)] was the maximum and reached 100%, 100% and 97.2% for S. aureus and 100%, 99.8% and 97.0% for E. coli, respectively. The results demonstrate that cellulose/TiO₂ membrane, cellulose/ZnO membrane and cellulose/chitosan membrane can act as good antibacterial materials in water treatment, medical treatment, food industry as well as other applications.

Key words: Cellulose, Ionic liquid, TiO₂ nanoparticle, ZnO nanoparticle, Chitosan

GAO Shenghan, GAO Ruichang. Antibacterial Cellulose Composite Membranes Prepared in Ionic Liquid via Phase Inversion Method[J]. Chemical Research in Chinese Universities, 2017, 33(4): 678-683.

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