Nanoaggregates and Structure−Function Relations in Asphaltenes†
By Gaëlle A. L. Andreatta, C. C. Gonçalves, Gabriel Buffin, N. Bostrom, C. Quintella, Fabricio Arteaga-Larios, E. Pérez, O. Mullins. 2005
148 citations recorded by the source corpus.
The goal of predictive science is to establish structure−function relations for a system of interest. The obvious first step is to determine the structure of the system. Predictions in asphaltene science have been greatly inhibited, because of disagreement regarding molecular weight and molecular structure. With substantial progress on both structural fronts, structure−function relationships can be explored. Here, high quality factor (high-Q) ultrasonics is used to demonstrate asphaltene nanoaggregation at ∼100 mg/L. Fluorescence quenching measurements corroborate these results. Simple concepts regarding asphaltene molecular structure can be used to understand asphaltene nanoaggregation. These relations are seen to apply for asphaltene samples of very different origin. The implications of this understanding on larger-scale asphaltene aggregation and solubility are discussed.
Subfields: Analytical Chemistry, Mechanics of Materials, Ocean Engineering
View Paper: https://www.semanticscholar.org/paper/0d538a7964b4a79c38010fb0e1be1bcdc22cc181
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Citations in the corpus
- On the formation and properties of asphaltene nanoaggregates and clusters by DC-conductivity and centrifugation (2011, methodology): “Nevertheless, the important issue is that the aggregation number is less than 10 for the asphaltene nanoaggregates as predicted based on their molecular architecture [14,33,34].”