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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.
Keywords
Cellulose
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Ionic liquid
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TiO2 nanoparticle
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ZnO nanoparticle
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Chitosan
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Shenghan Gao, Ruichang Gao.
Antibacterial cellulose composite membranes prepared in ionic liquid via phase inversion method.
Chemical Research in Chinese Universities, 2017, 33(4): 678-683 DOI:10.1007/s40242-017-6423-4
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