有机/无机杂化纳米粒子制备多孔增透膜

以甲基丙烯酸四氟丙酯-co-γ-甲基丙烯酰氧丙基三甲氧基硅烷P(TFPMA-co-TMSPMA)]共聚物和聚苯乙烯(PS)二元混合乳液旋涂成膜,再采用环己烷选择性溶解除去PS纳米粒子的方法制备了多孔有机/无机杂化纳米基光学增透膜。研究了二元混合乳液固含量、旋涂速度及纳米粒子粒径等参数对增透膜性能的影响。通过选用不同固含量的混合乳液以及改变成膜转速,可制得膜厚在109～208nm之间,折射率nf在1.22～1.25之间,在400～1100nm波段均获得最大透射率高于99.1%的增透膜;此外,研究发现膜的粗糙度及透射率对纳米粒子粒径有较强的依赖性,减小成膜乳液粒子粒径可有效降低膜的粗糙度。

Nanoporous Antireflective Coating Fabricated by Organic-Inorganic Hybrid Nanoparticles

A facile route to prepare nanoporous antireflective coating(ARC) composed of organic/inorganic latex particles of poly(2,2,3,3-terafluoropropyl methacrylate-co-γ-methacryloxypropyltrimethoxysilane P(TFPMA-co-TMSPMA)] on glass substrates by spin-casting binary latexes of P(TFPMA-co-TMSPMA)/polystyrene(PS),and then selectively removing the PS particles with cyclohexane is reported.The effects of concentration of binary latexes,rotation speed,as well as the size of the latex particles on the antireflective performance are studied.Nanoparticle coatings which exhibited satisfying antireflective performance in the wavelength range of 400~1100 nm and with the highest transmittance above 99.1% are prepared with thickness in 109~208 nm and refractive indices about 1.22~1.25.It is also found that the surface roughness and the optical transmittance of the nanoporous coatings are related with the size of the latex particles used for the ARC.Nanoparticle coatings with reduced surface roughness can be prepared with latexes of smaller particle size.