Chemical Engineering, Department of
The Department of Chemical Engineering combines the study of mathematics, chemistry, physics and biology, with engineering science, design, and economics. Students at the Department learn how to design safe, efficient, environmentally-friendly, sustainable and economical processes and products.
This community includes research outputs produced by faculty and students. Submitting works to QSpace may enable compliance with the Tri-Agency Open Access Policy on Publications.
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Recent Submissions
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Power Series for Normal Stress Differences of Polymeric Liquids in Large-Amplitude Oscillator Shear Flow
(2018-04)Exact solutions for normal stress differences in polymeric liquids subjected to largeamplitude oscillatory shear flow (LAOS) contain many Bessel functions, each appearing in infinite sums. For the simplest relevant model ... -
Series Expansion for Shear Stress in Large-Amplitude Oscillatory Shear Flow From Oldroyd 8-Constant Framework
(2018-06)When polymeric liquids undergo large-amplitude oscillatory shear flow (LAOS), the shear stress responds as a Fourier series, the higher harmonics of which are caused by the fluid nonlinearity, and the first harmonic of ... -
Exact Coefficients for Rigid Dumbbell Suspensions for Steady Shear Flow Material Function Expansions
(2008-07)From kinetic molecular theory, we can attribute the elasticity of polymeric liquids to macromolecular orientation. For a suspension of rigid dumbbells, subject to a particular flow field, we must first solve the diffusion ... -
Degradation in Parallel-Disk Rheometry
(2018-08)We analyze quantitatively the oxidative degradation of a sample in a parallel-disk rheometer, as oxygen diffuses inward, radially, from the free boundary. We examine rheometer error mitigation by means of nitrogen blanketing, ... -
Orientation Distribution Function Pattern for Rigid Dumbell Suspensions In Any Simply Shear Flow
(2018-09)For rigid dumbbells suspended in a Newtonian solvent, the viscoelastic response depends exclusively on the dynamics of dumbbell orientation. The orientation distribution function ψ (θ ,φ ,t) represents the probability of ... -
Polymeric Ionic Liquid Compositions for In-Situ Product Removal Bioreactor Applications
Although the biosynthesis of n-butanol and succinic acid can afford renewable fuels, solvents, and chemical intermediates, these bioprocesses suffer from the cytotoxicity of their end products, leading to reduced production ... -
Polymer Orientation Contributions in Large-Amplitude Oscillatory Shear Flow
(2017-01)Previously, we used a dilute suspension of rigid dumbbells as a model for the dynamics for polymeric liquids in large-amplitude oscillatory shear (LAOS) flow. We then use dumbbell orientation to explain fluid elasticity. ... -
Order in Oscillatory Shear Flow
(2018-12)We examine the second order orientation tensor for the simplest molecular model relevant to a polymeric liquid in large-amplitude oscillatory shear flow (LAOS), the rigid dumbbell suspension. For this we use an approximate ... -
Review of Nonlinear Oscillatory Shear Flow Notations and Presentations: Polymeric Liquids
(2018-12)We review notations for, along with ways of presenting, the shear stress responses to large-amplitude oscillatory shear flow (LAOS). We find that the Fourier loss and storage viscosities to be the simplest primal notations ... -
An evaluation of hyaluronic acid and poly-L-lysine polyelectrolyte layers on alginate microspheres for use in protein-triggered drug release
Age-related macular degeneration (AMD) is the leading cause of vision loss in developed countries in those 50 years of age and older. Increased expression of the protein vascular endothelial growth factor (VEGF) plays a ... -
Investigation of Hydroisomerization Catalysts and Reaction Conditions to produce Branched-Chain Fatty Acids
Fatty acids (FAs) from vegetable oils can be used as feed to produce renewable hydrocarbons and bio-lubricants. Naturally occurring FAs are, however, susceptible to oxidative attack and have operating temperature limitations ... -
Modification of Polysaccharides and their Use as Pickering Emulsifiers in Oil/Water Emulsions, Miniemulsion, and Microsuspension Polymerization
Emulsion and suspension systems are the basis for the formulation of a wide variety of products including pharmaceuticals, consumables such as food, personal care or cosmetics and commodity materials such as adhesives, ... -
Radical Copolymerization of Hydroxy-Functional Monomers
Solvent-borne acrylic resins are commonly used in automotive coatings formulations due to the superior characteristics they provide to the final products. Hydroxyl-functionality, incorporated by selection of 2-hydroxyethyl ... -
Improvement of Biofuel Fermentation Processes With Use of Poly(vinyldodecylimidazolium bromide) for In-situ Product Removal
The production of biofuels through fermentation has become increasingly important due to the need for sustainable energy sources. The fermentation processes of ethanol and n-butanol, by Saccharomyces cerevisiae and ... -
Mathematical Modeling of Nylon 6/6,6 Copolymerization
This thesis develops a mathematical model for the hydrolytic copolymerization of caprolactam with hexamethylene diamine (HMD) and adipic acid (ADA) in a batch reactor to produce nylon 6/6,6 copolymer. The reaction mechanism ... -
Degradation in Cone-Plate Rheometry
(2018-07)We analyze quantitatively the oxidative degradation of a sample in a cone-plate rheometer, as oxygen diffuses inward, radially, from the free boundary. We examine rheometer error mitigation by means of nitrogen blanketing, ... -
Macromolecular Orientation of Rigid Dumbbells in Shear Flow
We use molecular modeling to study the non-equilibrium behaviour of polymeric fluids. Specifically, we explore the macromolecular orientation induced by shear flow fields. We choose the simplest molecular model, the rigid ... -
A New Approach to Make Starch Graft Copolymers via Nitroxide-Mediated Polymerization
Starch is one of the most abundant polysaccharides worldwide next to cellulose. Starch bio-polymers are sustainable, biodegradable, and abundant, but are often chemically modified to improve the physical or chemical ... -
The biological treatment of synthetic fracking fluid in an extractive membrane bioreactor: selective transport and biodegradation of hydrophobic and hydrophilic contaminants
Hydraulic fracturing involves the use of horizontal drilling techniques and high-pressure liquid injections to stimulate the production of natural gas through the resultant micro-fracturing networks in tight formations. ... -
Nanoplasmonic Sensors Based on Chirped Crossed Surface Relief Gratings
This work presents a new type of nano-plasmonic sensor based on crossed surface relief gratings (CSRGs) with gradually varying pitch generated on top an azobenzene thin films using a 532 nm laser and a modified Lloyd mirror ...
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