A series of APU/ZnO nanocomposites were prepared by biomass-based aqueous polyurethane and nano ZnO. The prepared APU/ZnO was investigated by Fourier transform infrared spectroscopy(FT-IR) ,thermogravimetric analysis(TGA) ,Ultravoilet spectroscopy(UV) ,transmission electron microscopy(TEM)and scanning electron microscopy ( SEM ) etc. The results of TEM and SEM showed that ZnO nanoparticles with the average size of 200 nm uniformly disperse in the WPU matrix. Meanwhile,the thermal stability of APU/ZnO had been enhanced through TG analysis. In addition,the stiffness and toughness,antimicrobial properties and anti-ultraviolet effect of the APU matrix are unproved appreciably by adding a small amount of the ZnO nanoparticles.%以自制的生物基水性聚氨酯( APU)及纳米氧化锌(ZnO)为原料制备了APU/ZnO复合材料,并通过红外光谱(FT-IR)、热重(TG)、紫外(UV)、透射电镜(TEM)和扫描电镜(SEM)等手段对复合材料的性能进行了表征.TEM和SEM照片显示,制得的新型纳米ZnO的尺寸为200 nm左右,可较均匀地分散在APU体系中.TG测试结果表明添加了少量纳米ZnO的复合材料的耐热性有了明显提高.同时测试结果表明,少量纳米ZnO粒子的加入对APU有很好的增强和增韧效果,且具有一定的抗菌性和抗紫外性能.
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