Preparation and Properties of Waterborne Polyurethane/Cu(Ⅱ)-loaded Hydrozyapatite Nanocomposites
1.Introduction Waterborne polyurethane (WBPU) is widely used in the coatings and adhesives.1,2 The mechanical properties, thermal stability and water resistance of the WBPU, however, are still lower than those of the organic solvent-borne PU and need to be improved/3 Moreover, WBPU can be degraded by many types of fungi4 and bacteria5, mainly due to the hydrolysis of the -NHCOO groups. One of the methods to overcome these problems is to develop polymer materials with biocidal activities by incorporating with antibacterial agent.6,7 In the present study, hydroxyapatite nanoparticles (Hap NPs) were chosen as a reinforcing nanofiller and an antimicrobiai carrier. Meanwhile, copper(Ⅱ) was chosen as loading-cation to prepare CuHAp antimicrobial agent. We have prepared a novel composite of WBPU/CuHAp with environmentally friendly, good mechanical properties, and antibacterial activity in situ polymerization. The physical and antibacterial properties of composites were investigated.
Waterborne polyurethane Cu(Ⅱ)-loaded hydrozyapatite Nanocomposites Reinforcement Antibacterial properties
Caixia Zhao Weide Zhang
Nano Science Research Center,School of Chemistry and Chemical Engineering,South China University of Technology,381 Wushan Road,Guangzhou 510640,PR China
国际会议
江苏镇江
英文
348-349
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）