Novel polyester/SiO2 nanocomposite membranes: Synthesis,properties and morphological studies |
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| Institution: | 1. Department of Chemistry, Darab Branch, Islamic Azad University, Darab 7481783143-196, Islamic Republic of Iran;2. Young Researchers and Elite Club, Darab Branch, Islamic Azad University, Darab, Islamic Republic of Iran;1. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832003, China;2. Quality of Products Supervision & Inspection Institute of Technology, Xinjiang Uygur Autonomous, 830011, China;1. Department of Chemistry, Darab Branch, Islamic Azad University, Darab, 7481783143-196, Islamic Republic of Iran;2. Young Researchers and Elite Club, Darab Branch, Islamic Azad University, Darab, Islamic Republic of Iran;1. Innovation Centre - Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia;2. Department of General and Inorganic Chemistry, Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade, Serbia;3. Faculty of Mining and Geology, University of Belgrade, ?u?ina 7, 11000 Belgrade, Serbia;4. Faculty of Physical Chemistry, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia;1. Laboratoire Géoressouces, Matériaux, Environnement et Changements Globaux, Faculté des Sciences de Sfax, Université de Sfax, 3018 Sfax, Tunisia;2. Laboratoire de chimie industrielle, Ecole Nationale d''ingénieurs de Sfax, Université de Sfax, 3018 Sfax, Tunisia;3. Laboratoire des Matériaux et du Génie Physique, 3 Parvis Louis Néel, BP 257, 38016 Grenoble, France;4. CNR Istituto processi chimico-fisici, Viale f. Stagno d''Alcontres 37, 98158 Messina, Italy;1. Beijing Center for Crystal Research and Development, Key Laboratory of Functional Crystals and Laser Technology, Chinese Academy of Sciences, Beijing, 100190, PR China;2. University of Chinese Academy of Sciences, Beijing, 100049, PR China;3. Institute of Functional Crystal Materials, Tianjin University of Technology, Tianjin, 300384, PR China |
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| Abstract: | In this paper, a new type of soluble polyester/silica (PE/SiO2) hybrid was prepared by the ultrasonic irradiation process. The coupling agent γ-glycidyloxypropyltrimethoxysilane (GOTMS) was chosen to enhance the compatibility between the polyester (PE) and silica (SiO2). Furthermore, the effects of the coupling agent on the morphologies and properties of the PE/SiO2 hybrids were investigated using UV-vis and FT-IR spectroscopies and FE-SEM. The densities and solubilities of the PE/SiO2 hybrids were also measured. The results show that the size of the silica particle was markedly reduced by the introduction of the coupling agent, which made the PE/SiO2 hybrid films become transparent. Furthermore, thermal stability, residual solvent in the membrane film and structural ruination of membranes were analyzed by thermal gravimetric analysis (TGA). The effects of SiO2 nanoparticles on the glass transition temperature (Tg) of the prepared nanocomposites were studied by differential scanning calorimetry (DSC). Moreover, their mechanical properties were also characterized. It can be observed that the Young's moduli (E) of the hybrid films increase linearly with the silica content. The results obtained from gas permeation experiments with a constant pressure setup showed that adding SiO2 nanoparticles to the polymeric membrane structure increased the permeability of the membranes. |
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| Keywords: | Polyester Nanocomposite Ultrasonic irradiation Silica Gas permeation |
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