Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Particle Nucleation"”.
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Nucleation in emulsion polymerization : steps towards a non-micellar nucleation theory
… than 70 years, understanding of the mechanism of particle nucleation in emulsion polymerization has been one of the most challenging issues in heterophase polymerization research. Within this work a comprehensive experimental study of particle nucleation in emulsion polymerization of styrene at 70 …
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Non-Aqueous Dispersion Polymerization for Automotive Coating Applications
… (NAD) is used to produce submicron sized particles utilized by the solvent-borne automotive coatings industry to prevent crack propagation, improve toughness and reduce energy requirements for drying. Despite its industrial significance, there have been few studies about particle …
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Insights into formation of semiconductor nanocrystals : from first principles calculations to kinetic models of nucleation and growth
… the underlying mechanisms leading to nucleation and crystal growth in these systems are still not well understood. This thesis aims to address this challenge by utilizing first principles calculations and mathematical modeling to study the formation of cadmium selenide nanocrystals, …
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Modelling the self-assembly and structure of carbonaceous nanoparticles
The self-assembly and structure of carbonaceous particles are investigated using molecular modelling methods. This provides a deeper understanding of molecular interactions relevant to pollutant formation and growth in combustion processes and other carbon-based applications. The existing soot …
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Stochastic modelling of silicon nanoparticle synthesis
… methods to study the aerosol synthesis of nano-particles and a new model to simulate the formation of silicon nanoparticles. Population balance modelling is used to model nanoparticle synthesis and a stochastic numerical method is used to solve the governing equations. The population balance …
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Aspects of Suspension & Emulsion Polymerisation
… <br/><br/>In a Newtonian system the final particle size is a function of the Weber and Reynold s number. <br/><br/>This dissertation is concerned with the properties of the suspension system and, in particular, those factors which influence the equilibrium drop size under non Newtonian …
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An Experimental Study of Soot Formation in Dual Mode Laminar Wolfhard-Parker Flames
… with temperature using Thermocouple Particle Densitometry (TPD). Soot volume fraction, particle size and particle number density fields were measured using laser light scattering and extinction. Gas velocities were measured using Particle Imaging Velocimetry (PIV) on the non-premixed …
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Scale-Up of Latex Reactors and Coagulators: A Combined CFD-PBE Approach
… relies on the ability to control the rates of particle nucleation, growth and coagulation in order to maintain control over the particle size distribution (PSD). The development of advanced population balance models (PBMs) has simplified this task at the laboratory scale, but commercialization …
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Towards understanding RAFT aqueous heterophase polymerization
… molecular weight distribution, and average particle size during the polymerization revealed the importance of the peculiarities of the heterophase system such as compartmentalization, swelling, and phase transfer. These results illustrated the important role of the water solubility of the …
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The sintering and stability of catalytic nano-particles
… of emission to sintering (instability of nanoparticles). It was found that the rates of emission did not fully reflect vapor phase transport (direct evaporation). The particle-support interaction was increasing the rate of evaporation leading to the belief that adatom diffusion, caused by a …