涤纶织物上Si O2反蛋白石光子晶体及其结构研究

摘要

采用无皂乳液聚合法制备单分散聚甲基丙烯酸甲酯(PMMA)微球,通过垂直沉积自组装法,在纺织基材上构建面心立方(FCC)结构PMMA蛋白石模板并填充二氧化硅(SiO2)纳米颗粒,应用紫外辐照技术除去模板,制备SiO2反蛋白石结构光子晶体.利用马尔文激光粒度仪测试PMMA和SiO2纳米微球粒径及其单分散指数(PDI),通过场发射扫描电子显微镜(FESEM)观察织物表面PMMA蛋白石模板、PMMA/SiO2复合光子晶体、SiO2反蛋白石结构光子晶体的表面形貌.结果表明:PMMA纳米微球粒径在458 nm左右适宜用于构建蛋白石模板,60 nm的SiO2纳米微球在浓度为5~8 w t%时适宜填充蛋白石模板,紫外辐照去除PMMA模板后可以制得三维有序的SiO2反蛋白石结构,其孔径均匀,排列整齐,整体上呈FCC结构.%The monodisperse polymethyl methacrylate(PMMA) microspheres were prepared by soap-free emulsion polymerization .The PMMA opal template with surface-centered cubic(FCC) structure was constructed on the textile substrate by vertical deposition self-assembly ,and SiO2 nano-particles were filled .Then ,ultraviolet irradiation technology was used to remove the template to prepare SiO 2 inverse opal photonic crystal .Marvin laser particle size analyzer was used to test PMMA ,SiO2 microspheres and PDI .The surface morphology of PMMA opal template ,PMMA/SiO2 composite photonic crystal ,and SiO2 inverse opal structure photonic crystal was observed by FESEM . The results show that PMMA nanospheres with the particle size of around 458 nm are suitable for constructing opal templates and 60 nm SiO2 nanospheres can be filled with opal templates at the concentration of 5~8 wt% .After the removal of the PMMA template by UV irradiation ,a three-dimensional orderly SiO2 inverse opal structure can be prepared ,with even hole diameter ,orderly arrangement and FCC structure .