Short fiber/polyurethane composite membrane for gas separation
| Autor: | Shadi Hassanajili, Mohammad Bagher Karimi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Filtration and Separation Glass wool 02 engineering and technology Dynamic mechanical analysis Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences Membrane chemistry Polymer chemistry General Materials Science Gas separation Fiber Physical and Theoretical Chemistry Composite material 0210 nano-technology Thermal analysis Glass transition |
| Zdroj: | Journal of Membrane Science. 543:40-48 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/j.memsci.2017.08.043 |
| Popis: | In this research, short fiber/polymer composite membranes is introduced for gas separation. Our attempt is to increase the membranes performance by using wide interface between fiber and polymer. Short glass wool fiber (SGWF) was used as a polar micro size reinforcement and was mechanically dispersed in polyurethane matrix. Scanning electron microscope (SEM) images showed that fibers have a good dispersion and adhesion to polymer matrix. In order to survey the phase separation and crystallization behavior of polyurethane segments, differential scanning calorimetery (DSC) and dynamic mechanical thermal analysis (DMTA) were used. The results indicated that polar surface of glass wool is a suitable site for attraction of hard segments. Thermal transition of soft segments were assisted using DMTA. Obtained results were showed that the presence of glass wool fiber remarkably reduced the soft segments glass transition temperature (T g ). Gas permeation properties of membranes were assisted using pure CO 2 , CH 4 and N 2 gases. Presence of SGWF caused a simultaneous increase in permeability and ideal selectivity (permselectivity) in a way that composite membranes showed high performance. Thus, using of fiber instead of nanoparticles in polymeric membranes can be more beneficial in view of economic and performance for industrial applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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