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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 “"poly(vinylpyrrolidone)"”.
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Crystallization behavior of nylon 6/6 and its blends with poly(vinyl pyrrolidone)
… on the blends of an aliphatic crystallizable polyamide (nylon 6/6) and trace quantities of a polar non-crystallizable diluent (poly(vinylpyrrolidone)). This study is based on the preliminary findings of Keith et al. who reported striking morphological changes in nylon 6/6 upon addition of …
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Electrochemical Oxidation of Individual Silver Nanoparticles: Exploring the Effect of Particle Shape, Capping Ligand, Electrolyte, and Potential on the Signal
… potassium chloride encourages the oxidation of polyethylene glycol capped particles at an increasing rate over time, but rarely allows oxidation poly-vinylpyrrolidone capped particles. Instead, these particles are better oxidized to silver oxide either in potassium nitrate at high potentials or …
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Polymer- and Bioadditives-Assisted Synthesis and Surface Modification of Anisotropic Gold Nanocrystals
… nanocrystals in high yield utilizing a polymer and small thiolated compounds as shape-directing agents during growth, which enhance the long-term shape stability and colloidal stability after functionalization. Chapter 1 is a literature review of the various methods for producing …
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Controlling molecular interactions to define interfacial phenomena and structure
Polymers and surfactants are often employed together in a wide range of formulations, such as paints, foodstuffs, pharmaceuticals and in detergency. Using the polymers and the surfactants together in a formulation provides additional or modulated physicochemical properties required for certain …
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The Use of Nanonindentation to Determine Composite Interfacial Shear Strength and the Effects of Environmental Aging
… to improve the performance of fiber-reinforced polymer composites made from low-cost fiber and matrix materials. Evaluation of three sizings, poly(vinylpyrrolidone) (PVP), a carboxyl modified polyhydroxyether (PHE), and a standard industrial sizing (G'), have revealed tremendous improvements in …
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Design of oral insulin tablet formulations to enable manufacture and storage under ambient conditions
… glasses. Initial studies focused on binary sugar–polymer systems to establish principles of glass stability. Sucrose proved superior to trehalose (which recrystallised under humidity stress), while high-Tg polymers polyvinylpyrrolidone (PVP) and poly(vinylpyrrolidone-vinyl acetate) (PVPVA) …
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Silver nanoparticles and thin films for strained-silicon surface enhanced raman spectroscopy and capacitively-coupled radiofrequency heating
… synthesised via a chemical reduction technique (polyol process) using poly(vinylpyrrolidone) as the capping agent, as well as citrate stabalised NPs, were also dispersed onto identical samples. Both techniques were analysed for their SERS viability via micro-Raman spectroscopy (488 nm Ar+ …
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Durability of Polymer Matrix Composites for Infrastructure: The Role of the Interphase
As fiber reinforced polymer matrix composites find greater use in markets such as civil infrastructure and ground transportation, the expectations placed on these materials are ever increasing. The overall cost and reliability have become the drivers of these high performance materials and have led …
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Thin-Film Polymer Nanocomposites Composed of Two-Dimensional Plasmonic Nanoparticles and Graphene
Plasmonic polymer nanocomposites contain plasmonic nanoparticles that are dispersed within a polymer. The polymer matrix strongly influences the optical properties of plasmonic nanoparticles. It is imperative to understand the interaction between plasmonic nanoparticles and polymers so that one can …