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Permanent link (DOI): https://doi.org/10.7939/R3D043

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A Study of Interactions of Asphaltenes in Organic Solvents Using Surface Forces Apparatus Open Access

Descriptions

Other title
Subject/Keyword
Surface force
Organic solvent
SFA
Asphaltene
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Xie, Jinggang
Supervisor and department
Xu, Zhenghe (Chemical and Materials Engineering)
Zeng, Hongbo (Chemical and Materials Engineering)
Examining committee member and department
Zeng, Hongbo (Chemical and Materials Engineering)
Tang, Tian (Mechanical Engineering )
Xu, Zhenghe (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2011-01-14T17:24:33Z
Graduation date
2011-06
Degree
Master of Science
Degree level
Master's
Abstract
A Surface Forces Apparatus (SFA) was used in this study to investigate the fundamental surface forces in oil sand processing research. Asphaltene coated surfaces were chosen as the research topic due to the critical role of asphaltenes in oil sands processing, from bitumen extraction, froth treatment to tailings treatment. To mimic the real surface state in industry processing, dip-coated asphaltene surfaces were prepared for surface force experiments. In this study, a SFA 2000 was used to determine intermolecular and surface forces of asphaltene in organic solvents (toluene and heptane). The force vs. distance curves, or so-called force profiles obtained provide valuable information on local material properties such as interaction energies, molecular conformation changes of the interacting asphaltene surfaces or films. Atomic force microscopy (AFM) was used to provide complementary information on the surface morphology of the prepared asphaltene surfaces.
Language
English
DOI
doi:10.7939/R3D043
Rights
License granted by Jinggang Xie (jinggang@ualberta.ca) on 2011-01-12T05:32:31Z (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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File title: Surface force measurements
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