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Abstract
This research studied the effects of PVP and PEG on morphology, hydrophilicity and mechanical properties of the PSF/NH2-SiO2 composite membranes. To study the chemical and physical properties, pure polysulfone (PSF) and nanocomposite PSF/NH2-SiO2 membranes were prepared. PVP and PEG at different loading were incorporated into the matrix of PSF membranes. Phase inversion technique was employed to forming of membrane. Composition and temperature of coagulation medium were controlled. The characteristics of prepared membranes was analyzed by using various analytical techniques. Hydrophilicity of membrane surface was determined through the measurement of water contact angle. Morphological structure, pore size and pore size distribution were studied through SEM image combined with computer software, Carnoy 2.0®. While tailoring of functional groups and mechanical properties were evaluated by FTIR-ATR and DMTA techniques, respectively. The results showed that introducing of PVP and PEG affect to the pore structure, pore size distribution and hydrophilic properties of PSF/NH2-SiO2 composite membranes. Result from DMTA revealed that modulus and mechanical strength of membrane sample was modified by incorporation of PVP and PEG. Glass transition temperature (Tg) of the prepared membranes slightly increased. As can be seen from the experimental results, it was confirmed that PVP and PEG affected to chemical and physical properties of PSF/NH2-SiO2 membranes.
Keywords: Composite membrane; Morphological structure; Hydrophilicity; PVP; PEG
