Browsing Chemical Engineering, Department of by Title
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LargeAmplitude Oscillatory Shear Flow Loops for LongChain Branching From General Rigid BeadRod Theory
(202004)General rigid beadrod theory [Hassager, J Chem Phys, 60, 4001 (1974)] explains polymer viscoelasticity from macromolecular orientation. By means of this theory, we relate the complex viscosity of polymeric liquids to the ... 
LargeAmplitude Oscillatory Shear: Comparing ParallelDisk with ConePlate Flow
(20140930)We compare the ratio of the amplitudes of the third to the first harmonic of the torque, T3/T1, measured in rotational paralleldisk flow, with the ratio of the corresponding harmonics of the shear stress, T3/T1, ... 
Laser Transmission Welding of Polybutylene Terephthalate and Polyethylene Terephthalate Blends
(20100831)Laser Transmission Welding (LTW) involves localized heating at the interface of two pieces of plastic (a laser transparent plastic and laser absorbing plastic) to be joined. It produces strong, hermetically sealed welds ... 
Latent Amine Cures of Brominated Poly(isobutylenecoisoprene)
(20100202)The allylic bromide functionality within brominated poly(isobutylenecoisoprene), or BIIR, alkylates primary amines repeatedly to generate thermoset products at reaction rates that are too fast to support commercial rubber ... 
Leukocyte Response to ElastinLike Polypeptide Coatings
(20131015)Small diameter synthetic vascular grafts have yet to be clinically successful due to luminal narrowing from thrombosis and intimal hyperplasia. Current attempts to address this issue include the development of materials ... 
Living Radical Polymerization in Aqueous Dispersed Systems with WaterSoluble Catalysts
(20151003)Living radical polymerization is an important technique for synthesizing advanced macromolecules including block copolymers. Since its discovery in the early 1990s the capability of the field has expanded with new types ... 
Living/controlled Polymerization Conducted in Aqueous Based Systems
(20070925)In the last decade processes known as living/controlled radical polymerizations (L/CRP) have been developed which permit the synthesis of highvalue specialty polymers. Currently, the three processes that have demonstrated ... 
Living/Controlled Radical Polymerization in a Continuous Tubular Reactor
(20101221)Significant advances have been made in the understanding of living/controlled radical polymerization processes since their discovery in the early 1990’s. These processes enable an unprecedented degree of control over ... 
Load bearing regenerative repairs for the cartilaginous soft tissue of the intervertebral disc
(20140917)Cartilaginous load bearing soft tissues such as the nucleus pulposus in the intervertebral disc are affected by degenerative diseases and physical injury, which if not treated early can initiate a progressive decline in ... 
Low melting point and amphiphilic polymer microspheres for therapeutic protein delivery
(20151209)Biodegradable microspheres have been extensively studied for controlled and minimally invasive in situ protein delivery. Their small size and thus ready injectability makes this device extremely popular for localized ... 
Macromolecular Orientation of Rigid Dumbbells in Shear Flow
We use molecular modeling to study the nonequilibrium behaviour of polymeric fluids. Specifically, we explore the macromolecular orientation induced by shear flow fields. We choose the simplest molecular model, the rigid ... 
Macromolecular Origins of Fifth ShearStress Harmonic in LargeAmplitude Oscillatory Shear Flow
(201608)This study examines the simplest relevant molecular model of a polymeric liquid in largeamplitude oscillatory shear (LAOS) flow: the suspension of rigid dumbbells in a Newtonian solvent. For such suspensions, the viscoelastic ... 
Macromolecular Tumbling and Wobbling in LargeAmplitude Oscillatory Shear Flow
(201811)For a suspension of rigid dumbbells, in any simple shear flow, we recently solved for the diffusion equation for the orientation distribution function by a power series expansion in the shear rate magnitude. In this paper, ... 
Mathematical model for ethane pyrolysis in an industrial furnace
(20140923)Ethane pyrolysis is an important industrial process that occurs by passing ethane and steam through radiant coils (tubes) in gasfired furnaces to produce ethylene and other light olefins. Undesirable side reactions that ... 
A Mathematical Model for the Devolatilization of EPDM Rubber in a Series of Steam Stripping Vessels
(20121024)A steadystate mathematical model for the stripping section of an industrial EPDM rubber production process was developed for a threetank process, and two fourtank processes. The experiments that were conducted to determine ... 
Mathematical Modeling of Arborescent Polyisobutylene Production in Batch Reactor Using Novel Material Balance and Monte Carlo Methods
(20141002)Four mathematical models have been developed to describe copolymerization of inimer and isobutylene via living carbocationic polymerization in batch reactors. In this system, there are six different propagation rate constants ... 
Mathematical Modeling of Arborescent Polyisobutylene Production in Continuous and SemiBatch Reactors
Mathematical models are developed for arborescent polyisobutylene (arbPIB) production in continuousstirredtank and semibatch reactors. The objective of the research is to assess how reactor type influences final polymer ... 
Mathematical Modeling of Nonpremixed Turbulent MethaneAir Flameless Combustion in a StrongJet/WeakJet Burner
(20100923)Flameless combustion technology has been developed over the past twenty years achieving lowNOx emissions and high energy efficiency for industrial applications. In the present work, three aspects of flameless combustion ... 
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 ... 
Mathematical Modeling of PEM Fuel Cell Cathodes: Comparison of FirstOrder and HalfOrder Reaction Kinetics
(20080919)Mathematical modeling helps researchers to understand the transport and kinetic phenomena within fuel cells and their effects on fuel cell performance that may not be evident from experimental work. In this thesis, a 2D ...