奈米銀的製備和其在抗菌纖維上的應用

• Main Authors: Meng-Da Du, 杜孟達
• Other Authors: Kung-Chung Hsu
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/mx29cz

碩士 === 國立臺灣師範大學 === 化學系 === 97 === A copolymer, PAD, was synthesized from acrylamide and DAPA in a proper reaction conditions. Experimentally, different ratios of PAD/AgNO3 solutions under different pH values were prepared and their effects on the dispersion property of formed Ag nano particles investigated by TEM and UV-VIS instruments. The results indicate that proper PAD/AgNO3 molar ratio and pH≒11 could prepare Ag nano particles in good dispersion. The antibacterial property was improved if the fiber was pre-treated with a hydrophilic agent SPP. When PET and Nylon hydrophobic textiles are immersed into PAD/reducing agent/AgNO3 solution, PAD could make the textiles to become hydrophilic. The Ag+ ions could be reduced to nano Ag particles and well-dispersed in the textile structure. After 20 times of laundering, the nano Ag particles still adhere onto textile texture and show antibacterial activity. PET textile modified by PAD and AgNO3 had better antibacterial activity than PET textile only modified by AgNO3. PAD could also improve antibacterial activity of modified Nylon when concentration of AgNO3 is lower than 0.5mM. When Nylon are modified by high temperature(120℃, 1.16atm) without PAD, PU group of spandex in the Nylon91 could produce more Ag particles than Nylon100. Therefore, Nylon91 have more stable antibacterial activity than Nylon100. Few moles of Ag ions would be extinguished by every time of high-temperature-modified, so solution of AgNO3 could be reapplied. There are much more Ag particles reduced by high temperature with PAD, so both Nylon91 and Nylon100 have good antibacterial activity. Finally, PAD copolymer of this invention act as a protecting agent of nano Ag particles and as a hydrophilic-enhancing agent for hydrophobic textiles.