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http://dx.doi.org/10.14478/ace.2011.22.6.664

Structures and Properties of Semi-blown Petroleum Asphalt  

Min, Kyung Eui (R&D Institute, Korea Petroleum Industrial Co. Ltd.)
Jeong, Han Mo (Department of Chemistry, University of Ulsan)
Publication Information
Applied Chemistry for Engineering / v.22, no.6, 2011 , pp. 664-671 More about this Journal
Abstract
The vacuum residue of petroleum refinery, i.e. asphalt, was modified through a non-catalytic air blowing process to prepare the semi-blown asphalt. Changes in composition, chemical structure, and physical properties of asphalt were examined. The result from the thin layer chromatography showed that the asphaltene content in asphalt was increased by the air blowing on account of the aromatization of aliphatic hydrocarbon and condensation. These changes in molecular structure were also confirmed by $^1H-NMR$, differential scanning calorimetry, and thermogravimetry. Because of the molecular structure changes, the penetration of asphalt was decreased and the softening point and the flash point of asphalt were increased.
Keywords
semi-blown asphalt; air blowing process; asphaltene; molecular structure; thermal properties; physical properties;
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