Comparison of permeability performance of PEBAX-1074/TiO2, PEBAX-1074/SiO2 and PEBAX-1074/Al2O3 nanocomposite membranes for CO2/CH4 separation
Comparison of permeability performance of PEBAX-1074/TiO2, PEBAX-1074/SiO2 and PEBAX-1074/Al2O3 nanocomposite membranes for CO2/CH4 separation
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DOI：
10.1016/j.cherd.2016.10.018
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发表时间：
2017-01-01
影响因子：
3.9
通讯作者：
Behbahani, Reza Mosayebi
中科院分区：
文献类型：
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作者：
Azizi, Navid;Mohanunadi, Toraj;Behbahani, Reza Mosayebi
由聚合物和无机纳米粒子组成的纳米复合膜具有良好的渗透性能、机械强度、热稳定性和化学稳定性，是提高聚合物膜分离性能的一种有效方法。本研究将三种纳米无机填料(二氧化钛、二氧化硅和三氧化二铝)填充到聚醚嵌段酰胺(PEBAX-1074)中，制备了纳米复合膜，并考察了其对CO2/CH4的渗透性能。采用溶液浇铸法制备了致密的纳米复合膜，并采用溶液共混法合成了纳米复合膜。用场发射扫描电子显微镜观察了膜的形态、空洞的形成和纳米颗粒的分布。用热重分析(TGA)考察了膜的热稳定性。用傅里叶变换红外光谱(FTIR)分析了膜中化学键的变化。气体渗透实验结果表明，与其他两种制备的膜相比，含有纳米氧化铝颗粒的膜具有更强的通过CO2分子的能力。(C)2016年化学工程师学会。爱思唯尔出版，版权所有。
Synthesis of nanocomposite membranes composed of polymer and inorganic nanoparticles is an efficient method to improve separation properties of polymeric membranes because they possess properties of both organic and inorganic membranes such as good permeation properties, mechanical strength, and thermal and chemical stability. In this study, three types of nano-sized inorganic fillers (TiO2, SiO2 and Al2O3) were embodied into the poly (ether-block-amide) (PEBAX-1074) matrix to synthesize nanocomposite membranes and CO2/CH4 permeation properties of the membranes were investigated. The neat membranes were dense and prepared via solution casting; the solution blending technique was employed for synthesis of the nanocomposite membranes. Morphology of the membranes, formation of voids, and distribution of the nanoparticles were observed using FESEM analysis. Thermal stability of the membranes was examined using thermal gravimetric analysis (TGA). Fourier transform infrared (FTIR) spectra of the prepared membranes were analyzed to identify variations of the chemical bonds. The results obtained from the gas permeation experiments with a constant volume setup showed that the membrane incorporating Al2O3 nanoparticles has more ability in passing CO2 molecules compared to the two other fabricated membranes. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.