Properties of novel polyvinyl alcohol/cellulose nanocrystals/silver nanoparticles blend membranes.
Novel polyvinyl alcohol (PVA) blend membranes containing cellulose nanocrystals (CNs) and silver nanoparticles (AgNPs) were prepared via a simple method. CNs were prepared by sulfuric acid treatment of microcrystalline cellulose. AgNO3 aqueous solution mixed with the CNs aqueous suspension and was reduced by NaBH4 at room temperature. Purified CNs/AgNPs nanocomposites as functional fillers mixed with polyvinyl alcohol to prepare blend membrane. The morphology, mechanical properties, and antibacterial activities of PVA/CNs/AgNPs composite films were investigated. The PVA/CNs/AgNPs composite films were stable and homogeneous. The tensile strength of PVA was increased from 57.02 MPa to 81.21 MPa when filled with CNs/AgNPs. Antibacterial ratio of PVA/CNs/AgNPs composite against Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus was 96.9% and 88.2%, respectively. The CNs/AgNPs nanocomposites could be applied as bi-functional nanofillers within PVA to improve the mechanical properties and antibacterial activities.
Institute of Chemical Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, People's Republic of China; Jiangsu Key Lab of Biomass-based green Fuels and Chemicals, Nanjing 210037, People's Republic of China.
Xu
X
Xu
Yi-Qin
YQ
Yang
Ying-Ying
YY
Xing
Jiu-Fang
JF
Yang
Shi-Fa
SF
Wang
D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D001894:Borohydrides / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D008567:Membranes, Artificial; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008826:Microbial Sensitivity Tests; D046529:Microscopy, Electron, Transmission; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012835:Silver Nitrate / Q000737:chemistry; D013211:Staphylococcus aureus / Q000187:drug effects / Q000254:growth & development; D013464:Sulfuric Acids / Q000737:chemistry; D013718:Tensile Strength
D000900:Anti-Bacterial Agents; D001894:Borohydrides; D008567:Membranes, Artificial; D013464:Sulfuric Acids; D012834:Silver; C025364:sodium borohydride; D011142:Polyvinyl Alcohol; D002482:Cellulose; D012835:Silver Nitrate; C033158:sulfuric acid; C109691:microcrystalline cellulose
Cellulose nanocrystals; Nanocomposite; Polyvinyl alcohol; Silver nanoparticles