Poly(amide-imide)/TiO2 nano-composite gas separation membranes: Fabrication and characterization |
| |
| Institution: | 1. Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA;2. GKSS Research Center, Max-Planck Strasse, D-21502 Geesthacht, Germany;1. School of Space and Environment, Beihang University, 37 Xueyuan Road, Beijing, China;2. College of Arts and Science, Beijing Union University, 197 Beituchengxi Road, Beijing, China;1. Faculty of Petrochemicals, Iran Polymer and Petrochemical Institute, 14965-115 Tehran, Iran;2. Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71348-51154, Iran;3. Development Division of Chemical, Polymer and Petrochemical Technology, Research Institute of Petroleum Industry, P.O. Box 18745‐4163, Tehran, Iran;1. State Key Laboratory of Fine Chemicals, Carbon Research Laboratory, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China;2. College of Environmental Science and Engineering, Dalian Maritime University, 1 Linghai Road, Dalian 116026, China;1. Functional Polymer Membranes Group, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia;2. Advanced Membranes and Porous Materials Center, Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia |
| |
| Abstract: | Nano-composite membranes based on a fluorinated poly(amide-imide) and TiO2 were fabricated by a sol-gel method. Permeability data for gases such as O2, N2, CO2, H2 and CH4 were collected as a function of pressure and temperature. With the exception of CO2 and H2, all other gases exhibited higher activation energies for the nano-composite membrane when compared with the pure poly(amide-mide), consistent with the picture of a more rigid or denser structure as suggested by the physical characterization data. The decrease in the activation energy for permeation in the case of CO2 and H2 has been attributed to specific interactions of these gases with the TiO2 domains. Significant improvements in permselectivies of the poly(amide-imide) membrane have been observed in view of the volume percentage of the TiO2 incorporated into the polymer matrix. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
