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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 91 to 97 of 97 (0.078 seconds)Spelling suggestions: "subject:"polyethyleneterephthalate"" "subject:"polyethylenterephthalate""
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Silvering of three-dimensional polyethylene terephthalate textile material by means of wet-chemical processesOnggar, Toty, Abu Shayed, Mohammad, Hund, Rolf-Dieter, Cherif, Chokri 17 September 2019 (has links)
The aim of this research is to develop a wet-chemical silvering method for a three-dimensional (3D) textile material made of polyethylene terephthalate (PET) to prevent and eliminate biological contaminants in drinking water and other liquid-containing systems. Three-dimensional textile fabrics are particularly well-suited as silvered disinfection materials in water systems, because they have 3D structures, pressure-elastic textile design, and provide large contact areas. Furthermore, water can easily be passed through the structure. The developed wet-chemical procedures are based on aminosilane, which consists of at least two amine groups and is well-suited to form a silver diamine complex. The silvered textile material was coated with cationic silver. After the chemical reduction, the cationic silver turns into metallic silver on the surface of PET spacer fabrics.
The surface morphology of silver-coated spacer fabrics was analyzed and the uniform silver layer on the PET fiber surface was found. X-ray diffraction and energy-dispersive X-ray spectroscopy analysis spectrums showed that the silver was immobilized on the PET fiber surface. The layer thickness and the silver amount were also determined. The silvered spacer fabrics can be used in sealing and/or cooling water systems; therefore, the silver ion release in water was analyzed. Furthermore, textile physical tests for the measurement of breaking force and elongation were carried out. No significant change in breaking force and elongation was observed after silvering of PET spacer fabric.
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Impact of MXD6 on the Structure and Properties of Mechanically Recycled PET BlendsJalilian, Mohammadali January 2017 (has links)
No description available.
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Degradation Pathway Models of Poly(ethylene-terephthalate) Under Accelerated Weathering ExposuresGok, Abdulkerim 27 January 2016 (has links)
No description available.
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| 94 |
Spreading Behavior of Oil on Hierarchical Microstructured PET Surfaces Fabricated Using Hot-Embossing Combined with Laser-Based MethodsBouchard, Felix, Soldera, Marcos, Lasagni, Andrés Fabián 06 November 2024 (has links)
In this study, the wetting behavior of microstructured polyethylene terephthalate (PET) foils for polar and nonpolar liquids produced by plate-to-plate hot embossing is investigated. For the embossing step, stainless steel plates are used as stamps, which are microstructured with single-scaled and hierarchical textures using direct laser writing and two-beam direct laser interference patterning. The imprinted microstructures, containing pillar- and line-like textures, show increased water contact angles combined with a superoleophilic behavior. Time-resolved measurements reveal that oil droplets spread rapidly on the hierarchical textures with velocities of up to 1.4 mm2 s−1. This functionalization of PET foils creates new opportunities for a wide range of industrial applications, such as the use of oil-based instead of solvent-based paints, an improved distribution of lubricants in mechanical components or for oil–water separation in maritime surroundings.
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A indústria de reciclagem e a questão ambiental / The recycling industry and environmental issuesLino, Helio Francisco Corrêa 02 August 2011 (has links)
Esta tese pesquisou a questão da reciclagem no Brasil, destacando quatro dos mais significativos resíduos sólidos recicláveis: as latas de alumínio, o papel, as garrafas polipolietileno-tereftalato (PET) e o vidro. Busca oferecer maiores subsídios sobre um tema que só recentemente tem sido melhor estudado, dada a sua ligação com o meio ambiente e a polêmica sobre o desenvolvimento sustentável. / This thesis researched about recycling in Brazil highlighting four of the most significatives recyclily solid residues, e.g. tin (aluminium) cans, paper, bottles made of polyethylene terephthalate (PET) and the glass. Due to its liaison with the environment and the controversies about the sustainable development, this thesis offer great subsidies about a theme that only recently has been deeply studied.
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A indústria de reciclagem e a questão ambiental / The recycling industry and environmental issuesHelio Francisco Corrêa Lino 02 August 2011 (has links)
Esta tese pesquisou a questão da reciclagem no Brasil, destacando quatro dos mais significativos resíduos sólidos recicláveis: as latas de alumínio, o papel, as garrafas polipolietileno-tereftalato (PET) e o vidro. Busca oferecer maiores subsídios sobre um tema que só recentemente tem sido melhor estudado, dada a sua ligação com o meio ambiente e a polêmica sobre o desenvolvimento sustentável. / This thesis researched about recycling in Brazil highlighting four of the most significatives recyclily solid residues, e.g. tin (aluminium) cans, paper, bottles made of polyethylene terephthalate (PET) and the glass. Due to its liaison with the environment and the controversies about the sustainable development, this thesis offer great subsidies about a theme that only recently has been deeply studied.
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Biocompatible Electrospun Vehicles To Enhance the Effectiveness Of Anti-Fertility Strategies And Their Biomimetic Properties As Blood Vessel ScaffoldsChaparro, Francisco Javier 01 June 2018 (has links)
No description available.
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