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 9 of 9 for “"sol-gel-reaction"”.
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UV-curable organic-inorganic hybrid polyurethane coating
… free-radical initiator initiated a free-radical reaction for acrylate cross-linking, and the photo-latent base initiated a sol-gel reaction for condensation of the silanes. This study explored the cure extent of both reactions by FTIR for acrylates and silanes and a weight-loss method for silanes …
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Inorganic-organic hybrid materials and abrasion resistant coatings based on a sol-gel approach
… and polystyrene sulfonic acid to catalyze the sol-gel reaction. The sol-gel reaction can also be catalyzed under near neutral (i.e. 5 < pH < 7) and basic conditions. The effects of synthesizing hybrid materials under near basic and basic conditions has not been studied. Attempts to synthesize …
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The preparation and characterization of PEK/TEOS glasses by the sol-gel method
… of a new class of inorganic glasses using the sol-gel approach. This technique utilizes metal alkoxide precursors such as tetraethylorthosilcate (TEOS) to build an inorganic glass matrix out of solution by a two step poly(hydrolysis-condensation) reaction mechanism. The benefits of making …
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Rheological and Mechanical behaviour of Block copolymers, Multigraft copolymers and Block copolymer Nanocomposites
… Other than conventional melt mixing technique, sol–gel processing is also a versatile technique, which making it possible to produce a wide variety of materials and to provide existing materials with novel properties. A combination of in situ sol-gel reaction with electron beam cross-linking in …
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Heterostructures Prepared by Surface Modification of Nanocrystals
… of NC heterostructures via polymerization or sol-gel reaction. Coincidence lattice mismatch and surface functionality effects of metal oxide seed particles have been examined for formation of metal oxide-Au heterostructures by direct growth of Au NCs. Based on studies of surface cap exchange …
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The Effect of Topography on Surface Behavior of Pseudomonas aeruginosa
… by the introduction of silica bridges through a sol-gel reaction. To study the mechanism(s), specifically, we hypothesized that the motion, or surface motility, of P. aeruginosa is hindered by the presence of micro-meter scale obstacles via physical obstruction. To test this, we analyzed the …
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High-throughput synthesis and characterization of vanadium mixed metal oxide pigments using synchroton radiation
… absorption fine structure (XAFS) spectroscopy, solid state UV-Visible and Raman<br/>spectroscopy, Scanning and Transmission electron microscopy (SEM and TEM).<br/><br/>Vanadium mixed metal oxide BiMeVOX with Me = Mo, Cu and Fe, and calcium<br/>pyrovanadate with Me = Pb, Cd, Sr, doped systems, …
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Synthesis and characterization of Pt/TiO2/C composite catalysts for fuel cells prepared using a glucose modifier
… fuel cells (PEMFCs) serve a critical function in reactions which can be used to generate electrical energy from chemical fuels. Pt nanoparticles are commonly dispersed on a conductive support and used as electrode materials in these devices because of their exceptional catalytic activity and …
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Funktionalisierte Alkylmethacrylat-Blockcopolymere als Template zur Darstellung geordneter Silica-Strukturen
… Darstellung geordneter Silica-Strukturen über Sol-Gel-Reaktionen von Alkoxysilanen wurde angestrebt. Es wurde das Diblockcopolymersystem Poly(pentylmetacrylat-b-methylmethacrylat) PPMA-b-PMMA untersucht. Dieses wurde nach dem Mechanismus der anionischen Polymerisation dargestellt, um eine …