SANS method study of surfactant mixture system TX-100+C16TAB in heavy water solutions
نویسندگان
چکیده
The mixture system of two classic surfactants cationic and non-ionic – C16TAB (hexadecyltrimethylammonium bromide)+TX-100(p-(1,1,3,3-tetramethyl) poly(oxyethylene) in heavy water solutions was investigated at temperatures 30, 50, 70 for compositions 1:1, 2:1, 3:1 by the small-angle neutron scattering(SANS) method on spectrometer (‘YuMO’) at the IBR2 pulsed neutron source at FLNP, JINR in Dubna (Russia). Measurements have covered Q range from 7x10 to 0.4 Å. The SANS measurements of aqueous solutions of nonionic / cationic surfactants have shown that the mixed micelles are formed [1-2]. From the measured dependence of the scattered intensity on the scattering angle, we derived the size, shape of micelles, aggregation number at various compositions and temperatures. The size of mixed micelle is a weak function of the mixing ratio between the two components.
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