THE EFFECT OF ODOR SUBSTANCES ON THE SURFACE-POTENTIAL OF IONIC POLYMER MEMBRANE

The surface potential of ionic polymer membrane was affected by absorption of ordor substances (H2S, NH3 etc.). The surface potentail variance caused by ordor substances was enhanced by addition of electron donor (caffeine, 5'-GMP) to ionic polymer and reduced by addition of electron acceptor (procaine, 5'-AMP) (Figs. 3, 4). Addition of beta-cyclodextrin to ionic polymer membrane made the sensitivity for terpene increased which is one of the species of perfume enlarged (Table 3). This reason can be considered that a terpene molecule is included in beta-cyclodextrin but a part of the molecule stickes out of the pore of the beta-cyclodextrin, the part interacts with ionic polymer. Addition of Cu-chlorophyllin to ionic polymer made the sensitivity for ammonima increased (Figs. 6, 7). This reason can be considered that ammonia coordinates to the central Cu(II) ion of Cu-chlorophyllin.