博士 / 長庚大學 / 化工與材料工程研究所 / 91 / In this study, the surface modification of nonwoven fabric (PP) with acrylic acid, N-isopropylacrylamide, and chitosan by Co60 and UV irradiation is reported. There are three segments in this study. In the first segment, the graft polymerization of acrylic acid onto nonwoven fabric was induced by Co60 irradiation. After the modification of the nonwoven fabric with acrylic acid, chitosan was immobilized onto the modified nonwoven fabric with 1-ethyl-3-(3-dimethyamino propyl) carbidiimide (EDAC) to get the chitosan containing modified nonwoven fabric. The effects of acrylic acid grafting content and chitosan on the wettability and antibacterial assessment were investigated. The relative wicking time of water on the modified nonwoven fabric decreased with increasing acrylic acid grafting content and chitosan, whereas the water content and diffusion of water on the modified nonwoven fabric increased. The antibacterial activity of Pseudomonas aeruginosa and Staphylococcus aureus on the modified PP nonwoven fabric increased with increasing acrylic acid grafting content and chitosan.
In the second segment, the graft polymerization of acrylic acid and N-isopropylacrylamide onto nonwoven fabric was induced by UV irradiation with benzoin ethyl ether. Then chitosan was immobilized onto the modified nonwoven fabric by UV irradiation with benzoin ethyl ether. The effects of acrylic acid, N-isopropylacrylamide grafting content, and chitosan on the wettability and antibacterial assessment were investigated. The relative wicking time of water on the modified nonwoven fabric decreased with increasing acrylic acid grafting content and chitosan. The antibacterial activity of Pseudomonas aeruginosa and Staphylococcus aureus on the modified PP nonwoven fabric increased with increasing acrylic acid grafting content and chitosan.
In the third segment, the graft polymerization of acrylic acid onto nonwoven fabric was induced by Co60 irradiation. Then the carboxyl groups of the grafted acrylic acid chains were oxidized into peracid groups. These peracid groups would be used as the initiator, then N-isopropylacrylamide were grafted with the nonwoven fabric-g-acrylic acid by the peracid groups and UV irradiation. Then chitosan and collagen were impregnated onto the nonwoven fabric-g-acrylic acid-(N-isopropylacrylamide) surface by freeze-drying. The effects of acrylic acid, N-isopropylacrylamide, chitosan, and collagen on the wettability and antibacterial assessment were investigated. The relative wicking time of water decreased after the modification of acrylic acid, N-isopropylacrylamide, chitosan and collagen on the PP nonwoven fabric. The antibacterial activity of Pseudomonas aeruginosa and Staphylococcus aureus on the modified PP nonwoven fabric increased after the modification of acrylic acid, N-isopropylacrylamide, chitosan and collagen on the PP nonwoven fabric.
| Identifer | oai:union.ndltd.org:TW/091CGU00063065 |
| Date | January 2003 |
| Creators | 林浩慈 |
| Contributors | 楊禎明 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 186 |
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