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Chemical Engineering: Recent submissions
Now showing items 281-300 of 994
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Design of Polymeric Materials: Novel Functionalized Polymers for Enhanced Oil Recovery & Gas Sorption Applications
(University of Waterloo, 2019-11-28)As material requirements for particular applications become more specific and strict, using a targeted approach to design polymeric materials becomes a necessity. Following a general design framework prevents researchers ... -
Flowable-Electrode Capacitive Deionization for Treatment of Mining Process-Affected Water
(University of Waterloo, 2019-11-26)Water is a critical resource in the mining and resources sector. It enables the extraction and materials processing operations that underpin this primary industry, and therefore everyday life. Water’s value in mining means ... -
Improved Electric Vehicle Powertrain Incorporating a Lithium-Ion Battery and a Range Extender Zinc-Air Battery, plus Associated Health and Economic Benefits
(University of Waterloo, 2019-11-26)As the world confronts the serious challenge posed by anthropogenic climate change, electric vehicles have emerged as a serious candidate to displace gasoline-burning vehicles. In spite of the environmental and operational ... -
Segregation of chain ends to the surface of a polymer melt: effect of surface profile versus chain discreteness
(Springer, 2016)Silberberg has argued that the surface of a polymer melt behaves like a reflecting boundary on the random-walk statistics of the polymers. Although this is approximately true, independent studies have shown that violations ... -
Entropic segregation of short polymers to the surface of a polydisperse melt
(Springer, 2017)Chain ends are known to have an entropic preference for the surface of a polymer melt, which in turn is expected to cause the short chains of a polydisperse melt to segregate to the surface. Here, we examine this entropic ... -
Testing the Universality of Entropic Segregation at Polymer Surfaces
(2018)This study addresses entropic segregation effects at the surfaces of monodisperse and bidisperse melts. For the monodisperse melts, we focus on the segregation of chain ends to the surface, and for the bidisperse melts, ... -
Spontaneous Tilting Transition in Liquid-Crystalline Polymer Brushes
(2019)The equilibrium phase behavior of main-chain liquid-crystalline polymer brushes in good solvent is investigated using self-consistent field theory. The calculation assumes semi-dilute brushes, where the grafting density ... -
Evaluating Polymeric Materials for Sensing of Gaseous Analytes
(University of Waterloo, 2019-10-18)Polymers have been widely used in gas sensing applications especially for detecting Volatile Organic Compounds (VOCs). Some of these applications consist of disease diagnosis and breathalyzers as well as evaluation of ... -
Development of Active and Stable Nanostructured Ceria-based Catalysts for Soot Oxidation
(University of Waterloo, 2019-09-25)The focus of this thesis is to improve catalytic activity and stability of ceria-based catalysts for soot oxidation. The main objective was to develop an inexpensive, active and stable catalyst through iron and samarium ... -
Hydrogel Composite Adhesives Inspired by Algae and Mussels
(University of Waterloo, 2019-09-25)The ocean is a vast source of a multitude of materials used in daily life, but has also provided numerous sources of inspiration for creating novel bio-inspired materials. Marine mussels are one of the best-known marine ... -
Fluctuation effects in blends of A+B homopolymers with AB diblock copolymer
(AIP, 2018-05)Field-theoretic simulations (FTS) are performed on ternary blends of A- and B-type homopolymers of polymerization N_h and symmetric AB diblock copolymer of polymerization N_c. Unlike previous studies, our FTS are conducted ... -
Fluctuation correction for the critical transition of symmetric homopolymer blends
(AIP, 2017-07)Monte Carlo simulations are performed on structurally symmetric binary homopolymer blends over a wide range of invariant polymerization indexes, N. A finite-size scaling analysis reveals that certain critical exponents ... -
Calibration of a Lattice Model for High-Molecular-Weight Block Copolymer Melts
(AIP, 2019-05-06)The Morse calibration is applied to a lattice model designed for efficient simulations of two-component polymer melts of high molecular weight. The model allows multiple occupancy per site, which results in high invariant ... -
Development of Electrospun PAN Fibers Used as Electrodes for Flow Cell Applications
(University of Waterloo, 2019-09-23)The increase in energy consumption coupled with global climate change have generated a keen interest in renewable energy resources in the scientific world. Grid scale energy storage solutions are required in order to bridge ... -
Stable Rechargeable Aqueous Zinc Ion Battery Achieved by Cation Deficient Cathode Material and Gelatin Modified Separator
(University of Waterloo, 2019-09-23)In this research, manganese deficient zinc manganese oxide was synthesized by oxidation-precipitation with different zinc and manganese ratio. The cathode material synthesized with 1:3 zinc to manganese ratio has the highest ... -
Matrix Metalloproteinase-2 Cleavable Peptide-Based siRNA Delivery System for Cancer Treatment
(University of Waterloo, 2019-09-23)Among all kinds of gene therapy, siRNA, a class of 20 to 25 nucleotide-long double-stranded RNA molecules, is one of the promising therapeutic solutions to regulate post-transcriptional process for cancer treatment. However, ... -
The effectiveness of photocatalysis on reducing the toxicity of oil sands process-affected water to Lemna minor
(University of Waterloo, 2019-09-23)Oil sands process-affected water (OSPW) is a by-product produced by the surface-mining of oil sands in Alberta, Canada. OSPW has been found to be acutely and chronically toxic to many forms of wildlife, and due to the ... -
Cobalt Decorated Hierarchical Porous Carbon Spheres for High Sulfur Loading Lithium Sulfur Batteries
(University of Waterloo, 2019-09-20)With the growing need of energy storage devices, the market shows a strong requirement of lithium-based batteries. Nowadays, Lithium ion batteries (LIBs) are dominating the battery field because of its high energy density ... -
On the Prediction of Gas Hold-up in Ebullated Bed Reactors
(University of Waterloo, 2019-09-19)Commercial ebullated bed reactors (EBRs) are three-phase fluidized bed systems used for hydroprocessing (upgrading) of bitumen, a major Canadian resource. The objective of this thesis is to improve the understanding of the ... -
Self-assembled Metal Organic Framework Microflowers as Polysulfides Immobilizers for Lithium Sulfur Batteries
(University of Waterloo, 2019-09-18)A unique flower-like metal organic framework (ZnHMT) is synthesized by a facile and efficient method. The obtained ZnHMT microflowers were employed for the construction of a multifunctional interlayer towards improved Li-S ...