期刊
MOLECULAR PHYSICS
卷 117, 期 22, 页码 3389-3397出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00268976.2019.1649490
关键词
Micelles; structure; ion binding; wide-angle scattering; empirical potential structure refinement
资金
- Science and Technology Facilities Council - ISIS Neutron Scattering Facility [RB620144]
Wide-angle neutron scattering experiments combined with Empirical Potential Structural Refinement modelling have been used to study the detailed structure of decyltrimethylammonium bromide (C(10)TAB) micelles at two different temperatures; 25 degrees C and 50 degrees C and two concentrations; 0.4 and 0.8 M in water. At higher temperature, the micelles become smaller, and fewer counterions bind to the micelle surfaces, however, the headgroup positions are more ordered, possibly due to crowding in the smaller micelles. At higher concentration, the models suggest the micelles become elongated, although the aggregations numbers are smaller than those at the lower concentration. The smaller micelles found in 0.8 M solutions have more hydrated headgroups and lower counterion binding than the ellipsoidal micelles found in 0.4 M C(10)TAB solutions.
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