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 20 of 21 for “"Hybrid Polymer"”.
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Semiconductor nanochemistry and hybrid polymer photovoltaics
… as well as on the development of new hybrid polymeric photovoltaic devices based on nanoparticle/polymer composites. A series of experiments was performed where highly monodisperse nanoparticles of <br>CdSe, CdTe, and InP were synthesized via high temperature organometallic routes. The …
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Preparation of organic, inorganic hybrid polymer films and fibres by solvent crazing
… on the preparation of functional synthetic polymer fibers and films using the process called solvent crazing. Solvent crazing is a very complex phenomenon, which is realized by polymer drawing in the presence of liquid environment. Four principle stages of solvent crazing i.e. craze …
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ORMOCER (inorganic-organic hybrid polymer)-zeolite Nanocomposites: Advanced Membrane Materials for Gas Separation
… of novel ORMOCER® (inorganic-organic hybrid polymer) resins for the fabrication of free-standing mixed matrix membranes. Such mixed matrix membranes comprise molecular sieve entities integrated in ORMOCER® matrix. Mixed matrix membranes have the potential to combine the processability …
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Towards Solid-State Hybrid Polymer Electrolytes by Innovative, Rapid, and Solvent-Free Procedures
L'abstract è presente nell'allegato / the abstract is in the attachment
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The Effect of Atmospheric Aging on a Hybrid Polymer Matrix Composites' Material Properties
… exposure of the load bearing unidirectional hybrid composite (based upon glass and carbon fibers reinforcing a high temperature epoxy matrix) of a next generation transmission line design were investigated in this research. In particular, the flexural performance (in both static and fatigue …
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Theory and applications of confocal micro-Raman spectroscopy on hybrid polymer coatings and PDMS membranes and spectroscopic studies of doped B2O3-Bi2O3 glass systems
… study of confocal micro-Raman spectroscopy on hybrid polymer coatings and an application of this spectroscopic method on PDMS-membranes. The theoretical-experimental study includes the application of a model that describes the influence of the refraction effect on the focus length on confocal …
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PHOTOACTIVE HYBRID GRAPHENE-BASED POLYMERIC MATERIALS FOR WATER PURIFICATION
… have become crucial in the preparation of hybrid polymer nanocomposites, being used as an active nanofiller and support of freestanding devices as well. Owing to the possibility of significant improvement as co-catalyst, graphene materials are widely used in combination with polymer-based …
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Nanostructured gene and drug delivery systems based on molecular self-assembly
… of a new family of linear-dendritic "hybrid" polymers with plasmid DNA for applications in gene therapy. It begins with an overview of the design of next-generation, non-viral gene delivery systems and continues through the synthesis and validation of hybrid polymer systems, which …
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Solvent compatible microfluidic platforms for solid form screening of pharmaceutical parent compounds
… Development of multilayer PDMS-based and hybrid polymer-based microfluidic platforms and their application to solid form screening via diffusive mixing and antisolvent addition crystallization modes is discussed in chapters 2-4. An on-chip seeding-based crystallization optimization method …
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Hydrogels for Biomacromolecule Immobilization and Sensing
… protocol or through the development of new hybrid polymer biomaterials. Molecular sensing was accomplished by preparing crosslink-cleavable hydrogels with progressively more complex recognition elements. Initial work investigated the swelling kinetics of disulfide crosslinked hydrogels as a …
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Compressive Instabilities in Metal-coated Polymer Microtrusses
… of lightweight structures are metal-coated polymers. Hybrid polymer-nanometal microtrusses are a member of this family. These structures are fabricated by 3D printing complex truss-like structures out of polymer material, and electrodepositing nanocrystalline metal onto the polymer. Recent …
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Switching hybrid polymers with physically and covalently entrapped organic photochromes
… work was to test and tailor new sol gel derived hybrid polymer coatings for the incorporation of photochromic spirooxazines and chromenes. The development and optimisation of work was performed via two different routes (dye and matrix ones), that led to photochromic multi-layer coating systems …
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Polymer Waveguide Amplifiers
Polymer-based optical waveguides are a promising technology for integrating optical links onto standard printed circuit boards as they enable cost-effective manufacturing and assembly as well as offer high bandwidth. The motivation for this work is to address the lack of amplifying components the …
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Chemical effects in cluster SIMS depth profiling of polymer-based materials
… played by chemistry in the in-depth analysis of polymer-based materials, the importance of which has become relevant with the introduction, in secondary ion mass spectrometry, of cluster ion sources. While the introduction of cluster-SIMS represented a real breakthrough in the possibility of …
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New functional polymers for sensors, smart materials and solar cells
Organic polymers can be used as the active component of sensors, smart materials, chemical-delivery systems and the active layer of solar cells. The rational design and modification of the chemical structure of polymers has enabled control over their properties and morphology, leading to the …
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Design and Characterization of Electrospun Mats with Tailored Morphologies for Enhanced Active Layer Performance in Energy Conversion and Energy Storage Applications
… efficient ion diffusion pathways and beneficial polymer-ion interaction in polymer-gel electrolytes is demonstrated to result in enhanced battery performance. We demonstrate the ability to develop unique morphologies in Poly(3-hexafluoro propylene) (P3HT) films with energy storage applications …
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Structure-property correlations in fluoroaryl functionalized inorganic-organic hybrid polymers for telecom applications
… ORMOCER® materials (inorganic-organic hybrid polymers) for optical waveguide applications in telecommunication is presented. The preparation of the materials included precursor silane synthesis, hydrolysis/polycondensation of organoalkoxysilane mixtures, and photolithographic processing …
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Development of hybrid inorganic/organic nanocomposites with enhanced thermal conductivity
… these competing requirements is to develop polymer-based nanocomposites (NCs), where high thermally conductive ceramic fillers form heat conduction pathways within an otherwise thermally insulating polymer matrix. In this context, this thesis explores ladder-like polysilsesquioxanes (LPSQs) …
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Triplet-Triplet Annihilation Upconversion in Solid-State Organic-Inorganic Ureasil Polymer Hosts
… TTA-UC systems based on organic-inorganic hybrid polymers known as ureasils as hosts for a range of sensitizer/emitter pairs over the solar spectrum. Ureasils consist of organic poly(oxyalkylene) chains covalently linked to an inorganic siliceous network via urea bridges. A library of …
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