SANS method study of surfactant mixture system TX-100+C16TAB in heavy water solutions

3rd International Conference on Small Angle Neutron Scattering dedicated to the 80 anniversary of Yu.M. Ostanevich

Rajewska, A.^1,2 ; Kh Islamov, A.^1 ; Bakeeva, R.F.^3

Joint Institute for Nuclear Research, LNP, Dubna

141980, Russia^1

National Centre for Nuclear Research, wierk-Otwock

05-400, Poland^2

Kazan State Technological University, Kazan

420015, Russia^3

关键词: Aggregation numbers;    Hexadecyl trimethyl ammonium bromide;    Pulsed neutron sources;    SANS measurement;    Scattered intensity;    Scattering angles;    Surfactant mixture;    Water solutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/848/1/012023/pdf
DOI  :  10.1088/1742-6596/848/1/012023

来源: IOP

【 摘 要 】

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 30o, 50o, 70o for compositions 1:1, 2:1, 3:1 by the small-angle neutron scattering(SANS) method on spectrometer ('YuMO') at the IBR-2 pulsed neutron source at FLNP, JINR in Dubna (Russia). Measurements have covered Q range from 7x10-3to 0.4 Å-1. 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.