Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane
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Investigation of the gas permeability properties from polysulfone/polyethylene glycol composite membrane Danial Nasirian1 · Iman Salahshoori2 · Morteza Sadeghi3 · Niloufar Rashidi2 · Majid Hassanzadeganroudsari2,4 Received: 3 April 2019 / Revised: 24 July 2019 / Accepted: 25 November 2019 © Springer-Verlag GmbH Germany, part of Springer Nature 2019
Abstract In this research, the effect of polyethylene glycol (PEG) molecular weight on permeability and selectivity of polysulfone/polyethylene glycol (PSF/PEG) composite membrane is investigated. Polyethylene glycol with molecular weights of 4000, 6000, and 10,000 is applied. It is shown from the results that PEG applied in composite membranes with molecular weight of 1000 had the best diffusivity in comparison with the other composite membranes containing PEG with lower molecular weights. In addition, it is perceived that the permeability of CO2 from PSF/PEG10000 composite membranes has increased with enhancing weight percent. C O2 permeability into PSF/PEG composite membranes containing 20 wt% PEG10000 is calculated 7.64 barrer (1 barrer = 10−10 cm3 (STP) cm/cm2 s cmHg). The ideal selectivity for CO2/N2 gas pair in PSF pure membrane and composite membranes containing 10 wt% and 20 wt% PEG10000 are calculated 26.57, 30.61, and 32.12, respectively. Finally, the morphology and membrane structure of the membrane were evaluated with infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and tensile strength test. Keywords Polysulfone · Polyethylene glycol · Composite membranes · Gas separation
* Majid Hassanzadeganroudsari [email protected] 1
Department of Chemical Engineering, Shahreza Branch, Islamic Azad University, Isfahan, Iran
2
Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
3
Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran
4
Institute for Health and Sport, Victoria University, Melbourne, VIC, Australia
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Polymer Bulletin
Introduction Recently, the polymeric membranes and their application on separation process have been studied to enhance the gas separation process efficiency [1]. Mixing polymers for manufacturing novel polymeric membranes is one of the efforts of researchers to increase the efficiency and modifying the characteristics of polymeric membranes in gas separation [2]. The process of polymer mixing with each other creates new properties, which are not found in one polymer, alone. Polymer–polymer interaction is able to not only affect the gas absorption and transport properties of the mixture but also impress their mechanical properties [3]. The main objective of most of the investigations in gas separation field is improvement in separation tendency from polymeric membranes [4]. It is worth noting that generally polymers are divided into glassy polymers and rubber polymers [5]. Rubber polymer
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