Arahman Nasrul, Arifin Bastian, Mulyati Sri, Ohmukai Yoshikage, Matsuyama Hideto
This paper reported the modification of poly(ether sulfone) (PES) hollow fiber membrane structure by blending non-ionic surfactant tetronic 1307 in polymer solution. PES hollow-fiber membranes were prepared via non-solvent induced phase separation (NIPS) processby a batch-extruder. The effect of the addition of the surfactant tetronic 1307 on the performance of the final PES hollow-fiber membrane was investigated. The hollow fiber was extruded from the spinneret and wound on a take-up winder after it entered the coagulationbatch to induce phase separation and solidify the membrane. The obtained membrane were characterized for several membrane performance such as membrane morphology by scanning electron microscopy (SEM), membrane hydrophilicity by water contact angle measurement, membrane surface roughness by atomic force microscopy (AFM). Fouling resistance of Polyethersulfone (PES) hollow fiber membrane was observed by using humic acid (HA) as a model of water contamination through the membrane during ultrafiltration process. Experimental resultsshowed that the addition of tetronic 1307 was effective to enhance the fouling resistanceduring ultrafiltration. The hydrophilicity of the membrane surface was also improved due to the high retention of tetronic 1307 in the membrane. The permeability decline of PES blend membrane with tetronic 1307 in the humic acid filtration was lower than that of original PES membrane due to its more hydrophilic property. The existence of tetronic 1307 onthe surface of PES hollow fiber membrane was clarified by ATR-FTIR analysis. The appearance of new peak on the spectra of modified PES membrane corresponding to the stretching vibration of C-H of surfactant tetronic 1307. Thus, this tetronic 1307 exist on the surfaceof membrane can improve the hydrophilicity of PES membrane confirmed by water contact angle measurement.
Department of Chemical Engineering, Syiah Kuala University, Jin. T. Nyak Arief, Darussalam, Banda Aceh 23111, Indonesia; Department of Chemical Science and Engineering, Kobe University, Kobe, 657-8501, 1-1 Rokkodai, Nada, Japan
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