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Permanent link (DOI): https://doi.org/10.7939/R3B56DC96

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Surface modified polymer thin films with enhanced sensitivity to a naphthenic acid model compound: A quartz crystal microbalance study Open Access

Descriptions

Other title
Subject/Keyword
model naphthenic acids
polymer modification
QCM technique
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Xi,Huang
Supervisor and department
Elias,Anastasia
Examining committee member and department
Elias,Anastasia (Chemical and Materials Engineering)
Zeng, Hongbo (Chemical and Materials Engineering)
Narain, Ravin (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-09-13T14:14:05Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
A polymer coating that adsorbs napththenic acid (a hydrocarbon contaminant found in oil sands process affected water) was developed to enable the sensing of this chemical using a quartz crystal microbalance (QCM). To detect a naphthenic acid model compound (4-methyl-cyclohexane acetic acid, MCAA), a polybutadiene thin film surface was modified with amine functional groups through a facile two steps process, which involved generating hydroxides on the surface of the polymer and subsequently reacting this surface with silanes. QCM measurements revealed that polybutadiene thin films modified with amino groups exhibited much higher sensitivity to MCAA than unmodified films. The sensitivity of the system was tested in various buffer solutions and the application of amine functional groups to other polymers was also examined. Both the modification with the amino group and properties of the hydrophobic polymer itself were found to impact the device performance.
Language
English
DOI
doi:10.7939/R3B56DC96
Rights
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 these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before 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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