Direct comparison of SESANS and SAXS to measure colloidal interactions

作者:van Gruijthuijsen Kitty*; Bouwman Wim G; Schurtenberger Peter; Stradner Anna
来源:EPL, 2014, 106(2): 28002.
DOI:10.1209/0295-5075/106/28002

摘要

We present a systematic comparison of conventional small-angle X-ray scattering (SAXS) with the relatively new real-space technique, spin-echo small-angle neutron scattering (SESANS). We apply both techniques to colloidal suspensions where the particles interact as hard spheres, with electrostatic repulsions, or with polymer-induced depletion attractions. We successfully model the data sets with the appropriate colloid-colloid interaction potentials to determine the colloid radius, effective volume fraction, and surface charge, while illustrating the different representations of colloid structuring related to both techniques.

  • 出版日期2014-4