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The interaction of poly(ethylene oxide)(PEO)with the ionic surfactants,sodium dodecylsulfate(SDS)and cetyltrimethylammonium chloride(CTAC)respectively,in aqueous solutions containing a certain concentration of NH_4Cl, is studied by the viscosity measurement.It has been found that the ion-dipole interaction between PEO and ionic surfactants is changed considerably by the organic salt.For anionic suffactant of SDS,the addition of NH_4Cl into solution strengthens the interaction between PEO and the headgroup of SDS.On the other hand,for cationic surfactant of CTAC,the interaction between PEO and the headgroup of CTAC is screened significantly by NH_4Cl dissolved in solution.These findings may potentially be attributed to the negative property of the oxygen group of the PEO chain.In the presence of NH_4Cl,the cationic ions of the organic salt bind to the oxygen group of the PEO chain so that PEO can be referred to as a pseudo- polyelectrolyte in solution.
The interaction of poly (ethylene oxide) (PEO) with the ionic surfactants, sodium dodecylsulfate (SDS) and cetyltrimethylammonium chloride (CTAC) respectively, in aqueous solutions containing a certain concentration of NH 4 Cl, is studied by the viscosity measurement. that the ion-dipole interaction between PEO and ionic surfactants is changed due by the organic salt. Formal suffactant of SDS, the addition of NH 4 Cl into solution strengthens the interaction between PEO and the headgroup of SDS. On the other hand, for cationic surfactant of CTAC, the interaction between PEO and the headgroup of CTAC is screened significantly by NH_4Cl dissolved in solution. This finding may potentially be attributed to the negative property of the oxygen group of the PEO chain. In the presence of NH_4Cl, the cationic ions of the organic salt bind to the oxygen group of the PEO chain so that PEO can be referred to as a pseudo- polyelectrolyte in solution.