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 15 of 15 for “"functional coatings"”.
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Functional coatings deposited by an Atmospheric Pressure Plasma Jet (APPJ) system over Thermoplastic Elastomer (TPE) substrates
… of less than 92 ºC and thickness of the coatings was greater than 1000 nm. Sample coated in six passes and the lowest power proved to have the best friction performance. This sample had a friction coefficient that was 46% lower than that of the flocked seals. Whereas in the second group …
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Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press
… The performance of a novel grease resistant functional coating comprised of polyvinyl alcohol (PVA), sodium tetraborate pentahydrate (borate) and acetonedicarboxylic acid (ACDA) and the application of said coating by means of flexographic press is presented herein. Application criteria is …
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Printing and coating of graphene and related materials for advanced devices
… of printed electronics, they are employed as functional coatings as well as added to matrices to create smart composites. Graphene and related materials inks combine all these characteristics with outstanding optical and electronical properties, flexibility, good mechanical properties and …
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Bottlebrush Polymers: A Pathway to Engineering Surfaces and Interfaces
… attraction for the design of compatibilizers and functional coatings. First, we studied the phase behavior of bottlebrush polymers with random copolymer poly (styrene-r-methyl methacrylate) side-chains in a blend of two immiscible homopolymers, polystyrene and polymethyl methacrylate. We …
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Investigations on Multiscale Fractal-textured Superhydrophobic and Solar Selective Coatings
Functional coatings produced using scalable and cost-effective processes such as electrodeposition and etching lead to the creation of random roughness at multiple length scales on the surface. The first part of thesis work aims at developing a fundamental mathematical understanding of multiscale …
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ELECTRODEPOSITION OF POLYMER NETWORKS (EPON) AS CONFORMAL ULTRATHIN COATINGS
Functional coatings and interphases are omnipresent in modern technology and often determine the performance and lifetime of devices. For example, in solid-state energy storage devices, electrolyte-type polymeric interfaces between battery components such as the active electrode material and solid …
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Engineering and Optimisation of Materials and Components for Metal-Supported Solid Oxide Fuel Cells
… materials. Active layers, in the form of functional coatings, were deposited via a scalable and low-waste technique called Direct Ceramic Ink-Jet Printing. This method repeatedly produced coatings with 10-20 μm thicknesses, which permits the utilisation of lower cell operating …
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AMPHOTERIC POLYAMIDOAMINES AS FUNCTIONAL SPECIALTY POLYMERS
… characteristics were investigated as functional coatings to enhance cotton photostability in accelerated photoaging tests under UVA-UVB irradiation. To gain deeper insight into this phenomenon, the photodegradation mechanism both in solution and in the solid state was investigated …
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INVESTIGATION OF PROCESSING-STRUCTURE-PROPERTY RELATIONS IN VAPOR PHASE MODIFIED CELLULOSIC MATERIALS
… used in our daily lives for paper products and functional polymers. The cellulose molecule has a high density of hydroxyl groups, which causes strong intra-/inter- fiber hydrogen bonding. These abundant hydroxyl groups make cellulose super-hydrophilic and difficult to disperse or dissolve in …
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Impact of heat exchanger surface wettability on condensation, frosting, and defrosting performance under practical testing conditions
… challenges is through surface engineering, where coatings and treatments are designed to alter wettability and control droplet dynamics, frost nucleation, and ice adhesion. Prior studies have mainly concentrated on hydrophobic and hydrophilic coatings applied to flat samples or simplified heat …
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Fiber-Optic Sensors for Fully-Distributed Physical, Chemical and Biological Measurement
… was demonstrated. Then by coating the fiber with functional coatings, fully-distributed biological and chemical sensing was also demonstrated. In the biological sensing experiment, immunoglobulin G (IgG) was immobilized onto the fiber surface, and the experimental results show that only specific …
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Amine functionalization by initiated chemical vapor deposition (iCVD) for interfacial adhesion and film cohesion
Amine functional polymer thin films provide a versatile platform for subsequent functionalization because of their diverse reactivity. Initiated chemical vapor deposition (iCVD) is a polymer chemical vapor deposition technique that utilizes the delivery of vaporphase monomers to form chemically …
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Effect of roughness, microstructure, and chemistry on the environmental durability of structural alloys
Unlike functional materials where one design property is usually optimized, structural materials need to meet several design requirements including but not limited to excellent mechanical properties and environmental tolerance. However, more often than not, the metallurgical principles used to …
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Exploring approaches to functional surface modifications using an atmospheric plasma jet printer
… atmospheric plasma jet printer to create highly functional, tailored surface modifications and coatings. Understanding the processes which occur in the plasma are essential to use the plasma jet printing parameters to control the features of the surface coating formed. High speed video analysis …
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Raman-Spektroskopie hybridpolymerer Sol-Gel-Materialien : vom Sol bis zur Schicht
In der vorliegenden Arbeit wurden durch den Sol-Gel-Prozeß hergestellte hybride Sole, Xerogele und Schichten mit Hilfe der Raman-Spektroskopie untersucht. Dazu wurden zunächst die schwingungsspektroskopischen Zuordnungen für verschiedene Alkoxysilanen ergänzt und zusammengefasst. Anschließend wurde …