摘要
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-methylimidazo- lium chloride（[BMIM]C1）, via phase inversion while [BMIM]C1 was recycled through evaporation and used to pre- pare 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 cellu- lose/chitosan membrane with a blend ratio of l O：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 celhdose/chitosan membrane can act as good antibacterial materials in water treatment, medical treatment, food industry as well as other applications.
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-methylimidazo- lium chloride（[BMIM]C1）, via phase inversion while [BMIM]C1 was recycled through evaporation and used to pre- pare 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 cellu- lose/chitosan membrane with a blend ratio of l O：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 celhdose/chitosan membrane can act as good antibacterial materials in water treatment, medical treatment, food industry as well as other applications.
