Electrospun Porous Nanocomposites of Titania Fibers Doped with Silver Nanoparticles for Antibacterial and Air-filtering Uses

• Main Authors: CHOU,YING-WEN, 周映玟
• Other Authors: LOUH,RONG-FUH
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/81583258414334834396

碩士 === 逢甲大學 === 材料科學與工程學系 === 105 === This work mainly aims at the following major aspects, which include (a) preparation of TiO2 nanofibers by sol-gel and electrospinning, (b) production of Ag-NPs/TiO2 composite fibers by aerodynamic spraying method and liquid doping method, (c) anti-bacterial detection of staphylococcus aureus by Ag-NPs/TiO2 composite fiber combined with jelly, and (d) Ag-NPs/TiO2 composite fibers were deposited on PP spunbond nonwoven textile for air filtration test. The results show that our electrospinning technology is able to obtain TiO2 nanofibers of high uniformity and density by adjusting the control process parameters to form an oriented aligment of nanofiber structure. We employed both aerodynamic spraying method and liquid doping routes to obtain Ag-NPs/TiO2 composite fibers with uniformly implanted silver nanoparticles, while the liquid doping method can effectively enhance the content of Ag-NPs as well as the complete morphology of TiO2 fibers. The Ag-NPs/TiO2 composite fibers obtained by aerodynamic spraying method and liquid doping technique combined with medical jelly to form a sample for antibacterial test to observe growth inhibition of staphylococcus aureus. The PP spunbond nonwoven textile was used as substrate to be deposited with Ag-NPs/TiO2 composite fiber via ESP process. Our samples of ATP air-filtering layers were proved to significantly reduce the average pore size for air filtration purpose (from 210.296 μm to 6.476 μm) for improving the aerosol particles filter protection efficiency (from 1.2% to 81.0%) due to its air filtering performance by capturing and blocking aerial suspended particulates.