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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 15 of 15 for “"Photopolymerisation"”.
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Novel Photopolymers for Additive Manufacturing
… manufacturing, which is commonly known as vat photopolymerisation, is extremely attractive. During this process, the objects are produced via photopolymerisation reactions of monomers, and novel physicochemical properties are gained. This technique has environmental, economic, and production …
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Design and Characterisation of Hybrid Organic-Inorganic Materials for Luminescence Downshifting Devices
… characteristic of hybrids, while their photopolymerisation allows for the generation of light-guiding architectures known as waveguide-encoded lattices (WELs). WELs are a novel class of photonic material which has previously been shown to increase light collection at wide incident …
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Hydrogels for dermal applications
… the production of skin adhesive hydro gels by photopolymerisation was explored and an approximate order of monomer reactivity in aqueous solution was determined. Most notably, the increased reactivity of N-vinyl pyrrolidone within an aqueous system, as compared to its low rate of polymerisation …
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Electrohydrodynamic focusing and light propagation in 2-dimensional microfluidic devices for preconcentration of low abundance bioanalytes
… that are interesting for the optimisation of photopolymerisation as well as for the optical detection systems employing capillaries.
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UV-initiated synthesis of novel urethane polymers
… production of polyurethane coatings through a photopolymerisation reaction with isocyanates has been discovered. The nitrite esters were synthesised from nitrous acid produced in situ from sodium nitrite and sulfuric or nitric acid. Yields of 79.5 and 76.4% were obtained in the synthesis of the …
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Novel polymers for artificial liver support systems
… were: freeze-thaw polymerisation which involved photopolymerisation of frozen monomer/solvent mixture in a cold n-hexane continuous phase; suspension polymerisation in brine which involved polymerisation of hydrophilic monomers in a high salt content aqueous continuous phase; and …
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Holographic Point-of-Care Diagnostic Devices
… chemistry, in situ particle size reduction and photopolymerisation. The fabricated sensors consisted of off-axis Bragg diffraction gratings of ordered silver nanoparticles and localised refractive index changes in poly(2-hydroxyethyl methacrylate) and polyacrylamide films. The sensors exhibited …
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Improvement in Energy Conversion and Energy Storage Applications by Liquid Crystals and Carbon Nanoparticles
… hydrogel films were optimised via adjusting photopolymerisation duration under UV light. Based on the fabricated PHEMA substrates, flexible OSCs were subsequently made, whose extracted device parameters showed comparable characteristics with those in Chapter 3. Moreover, PHEMA-based OSCs can …
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Lumineszierende, transparente Nanokomposite - Synthese und Charakterisierung
… Herstellung von ZnS:Mn/PLA-Nanokompositen durch Photopolymerisation der Dispersion. ZnS:Mn/PMMA-Nanokomposite und die isolierten Partikel weisen eine Fluoreszenzquantenausbeute von ca. 30 % auf. Dieser Wert übertrifft bisher publizierte Werte für ZnS:Mn-Nanopartikel deutlich. Blau-grün …
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3D Printing in Cosmetics: Investigating New Skin Delivery Platform
… SLA 3D printer operates via free-radical based photopolymerisation process and was selected for its high-resolution capabilities and prior success in fabricating microneedles (MNs) for transdermal drug delivery. SG dental resin, a commonly used photopolymer, was employed due to its mechanical …
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Advancing protein-based biomaterials
Biomaterials research has rapidly advanced in recent years, with the development of novel materials that can be used in various fields such as biomedicine, agriculture, and others. Protein-based biomaterials have especially gained attention due to their biocompatibility and biodegradability. This …
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New fluorene based materials for organic electronics
… with a smectic mesophase. The kinetics of the photopolymerisation reactions and the total conversion in dependence from initiator concentration of the reactive mesogen with the nematic mesophase were measured. It becomes clear that the reaction rate and the total conversion decrease with …
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Computer-Guided Design of Photocatalyst for PET-RAFT Polymerisation
Photo-controlled polymerisation uses a photo-excited photocatalyst (PC) to reversibly and deactivate the propagating species. Under regulation by light, photo-controlled polymerisation features temporal control, spatial control, sequence control and high level of selectivity/orthogonality between …
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Die Wirkung verschiedener LED-Geräte auf die Durchhärtungstiefe und die Vickers-Härte verschiedener Composite
Dental light-curing composites have been cured successful with halogen and plasma-light long time ago. Since now the technologie of LED-light is allready used for polymerization of composites. The aim of this paper was to inquire the influence of LED-Light on the curing depth and the Vickers …
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Nanostructuring with diblock copolymers
To date silicon technology remains the predominant tool for semiconductor engineering and device fabrication. In future, scalable nanotechnologies will complement current silicon technology and promise to extend the functionality of today’s semiconductor devices. In keeping up with the demands of …