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백금전극에 의한 p-methoxyphenol 의 양극산화 특성
남기대,김홍수,조경행,이정균 충북대학교 산업과학기술연구소 1991 산업과학기술연구 논문집 Vol.5 No.1
Graft copolymerization of 4-vinylpyridine onto CA membrane was carried out in an aqueous medium by using ceric ammonium nitrate(CAN) as an initiator. The optmium condition for the graft copolymerization were 60℃; pretreatment and grafting 6 hours respectively; initiator concentration 0.03mol/L; pH 1; when the monomer concentration was 0.4mo1/L. Transport of phenol on aqueos solution through a porous membrane made by graft copolymerization was studied. the permeabilities of each phenol concentration were showed 250mg/L 1.1859×10^(-4) cm/sec, 500mg/L 1.0492×10^(-4)cm/sec and 1000mg/L 0.8597×10^(-4)cm/sec respectively. Permeability of phenol through the CA-g-poly(4-VP) membrane was better than through the pure CA membrane and was best in the graft 97% and showed the best selectivity in pH 7 rather than in pH 3 and pH 11. Thus, acid·base interactions between phenol moleculates and pyridine residues would be much more important than electrostatic interactions between phenolate ions and the pyridine residues.