Small Angle Neutron Scattering (SANS and V-SANS) Study of Asphaltene Aggregates in Crude Oil
作者： Thomas F. Headen , Edo S. Boek , Jörg Stellbrink , Ulrich M. Scheven
DOI: 10.1021/LA802118M
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摘要: We report small angle neutron scattering (SANS) experiments on two crude oils. Analysis of the high-Q SANS region has probed asphaltene aggregates in nanometer length scale. find that radius gyration decreases with increasing temperature. show measurements oils give similar aggregate sizes to those found from asphaltenes redispersed deuterated toluene. The combined use and V-SANS oil samples allowed determination large scale approximately 0.45 μm. This been achieved by fitting Beaucage functions over size regimes. fitted at very low-Q shown are not simply made aggregation all smaller nanoaggregates. Instead, they different coexisting.
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