Amphiphilic comb-like polymers for preparation of silver nanoparticles

• Main Authors: Chun-Wei Lin, 林群偉
• Other Authors: 鄭如忠
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/83166883910135345415

碩士 === 中興大學 === 化學工程學系所 === 95 === This research takes VBC as an initiator. According to NMCRP(nitroxide-mediated controlled radical polymerization) process to synthesize h-PVBC then iodination and isocyanation to produce h-PVB-NCO . Reacting h-PVB-NCO with PEGME2000 (polyethylene glycol methyl ether) and PEGME2000 as side chain ,named h-PVBN-g-PEGME (PP) is a amphiphilic polymer . PP could be an dispersant and reductant. It produces nano-silver particles and disperses well . Its’ physical characteristics was identified by using UV-Vis、TEM、FESEM、XRD , and probe into the effects of reduction mechanism at different conditions (time,concentration of PP) We combine water-borne polyurethane(PU) and PP to form polymer film then apply to antibacteria measurement and show good properties. In producting nano-silver particles is necessaryless to add any agents such like reductants , protectants , and dispersants . By way of heating , we can get nano-silver particles which at about 20~60nm in diameter. As increasing the concentration of PP , the diameter of silver particles will decrease .And increase time gets larger particles . It could shorten reaction time by using less solvent than before.