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报道了以六氯化钨为原料,以两亲性的无规共聚物聚苯乙烯-co-聚烯丙醇(PS-co-PAAL)和三嵌段共聚物聚氧乙烯-b-聚氧丙烯-b-聚氧乙烯(PEO-b-PPO-b-PEO)为模板,采用溶胶-凝胶法制备了WO3多孔薄膜.利用热重分析仪(TGA)、粉末X射线衍射仪(XRD)、扫描电子显微镜(SEM)、原子力显微镜(AFM)等表征手段,研究了模板和热处理温度对薄膜孔结构的影响;并通过H2敏测试以及利用紫外可见分光光度计(UV),研究了薄膜的氢敏性能和着色前后的透射光谱.结果表明,以无规共聚物PS-co-PAAL为模板制得的WO3薄膜,经400℃热处理后,可得到呈交联网状的多孔结构,并表现出最佳的氢致变色性能.
Reported the use of tungsten hexachloride as raw material, amphiphilic random copolymer polystyrene-co-polyallyl alcohol (PS-co-PAAL) and triblock copolymer polyoxyethylene-b-polyoxy WO3 porous films were prepared by sol-gel method using propylene-b-polyoxyethylene (PEO-b-PPO-b-PEO) as a template and characterized by TGA, XRD, , Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to investigate the influence of template and heat treatment temperature on the pore structure of the films. The H2 sensitivity tests and the UV-vis spectroscopy Hydrogen sensitivity and transmission spectra before and after coloring.The results showed that the WO3 film prepared by using random copolymer PS-co-PAAL as template could be obtained as a porous network with crosslinked network after heat treatment at 400 ℃, Best hydrogenochromic properties.