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Showing 1 to 15 of 15 for “"fluoropolymers"”.
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Novel Applications Of Fluoropolymers In Solution-Processed Electronics
… in stacked OLED devices. On the other hand, fluoropolymers are used to enable patterning of organic materials with otherwise incompatible commercial (organic) photoresists, via roll-to-roll compatible inkjet printing and, finally, for high resolution studies with electron beam lithography.
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Microcellular processing of fluoropolymers and the design of a microcellular foam extrusion system for wire coating
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Potential PFAS products from thermal decomposition of munitions: a DFT analysis of pyrolysis products of fluoropolymers in the presence of energetic compounds
… the source of energy in detonation events, and fluoropolymers, to bind formulations as a means of stabilization, to seal the formulation away from the elements, or to serve as a fluorine source in pyrolants. Energetic compounds degrade through a variety of pathways, but the major pathways …
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Synthesis of Highly Fluorinated Diels-Alder Polyphenylenes
Fluoropolymers have useful properties including high thermal stability, chemical resistance, low dielectric constants, and both hydrophobic and oleophobic character, as compared to non-fluorinated analogues. Meanwhile, Diels-Alder polyphenylenes (DAPPs) are known for thermal stability as well as …
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Characterization of Fluoropolymer Powders Made By Supercritical Assisted Mixing With Crystalline Additives
… showed that the virgin and post-ball milled fluoropolymers had similar intrinsic viscosities, hence similar molecular weights within experimental error limits. This implies that most of the polymer chains were simply disentangled during the mixing process and not broken. Differential Scanning …
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Epigenetic toxicity of PFOA in HepG2 cells and its role in lipid metabolism
… is used widely in the process of synthesizing fluoropolymers for the manufacturing of various daily products such as Teflon. PFOA is extremely persistent in the environment and can be detected in many organisms including humans. Different studies have shown the potential of PFOA causing …
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Transport properties of anion exchange membranes for fuel cell applications
… used in fuel cells due to the higher cost of fluoropolymers and the platinum metal catalysts. Anion exchange membranes (AEM) offer lower cost of both polymers and metal catalysts used in fuel cells. Unfortunately, AEMs are still in the earlier phase of development and demand in-depth …
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Design and operation of microchemical systems for multistep chemical syntheses
… and preferential wettability characteristics of fluoropolymers are used for phase separation. Such microseparators are used to demonstrate 100% separation of two phase flows of hexane and water, toluene and water, dichloromethane and water, and hexane and methanol. Integrated liquid-liquid …
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Electrocatalytic Oxygen and Nitrate Reduction Reactions Using Cu-Based Electrodes
… of this electrocatalytic NRR using different fluoropolymers instead of Nafion and propose methods to increase the durability of the catalysts.
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Fluorocarbene, Fluoroalkyl, and Fluoride Complexes of First-Row Transition Metals
… pharmaceuticals and agrochemicals, to fluoropolymers with extremely high thermal and chemical stability. Although elemental fluorine (F2) is the most reactive element, some fluoro-organic compounds are chemically inert. As such, controlled reactivity of fluorine or highly-fluorinated …
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Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonate (PFOS) in an Aquatic Ecosystem - Distribution and Fate
… paper and textile treatment, production of fluoropolymers, cosmetics and insecticides formulations, and fire fighting foams. They can enter the environment via direct and indirect emission sources such as manufacturing processes, use of commercial products containing PFSs, release of waste …
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Preparation and investigation of polymer-foam films and polymer-layer systems for ferroelectrets
… ethylene-propylene (FEP) copolymers are fluoropolymers with very good physical, chemical and electrical properties. The charge-storage ability of solid FEP films can be significantly improved by adding boron nitride (BN) filler particles. FEP foams are prepared by means of a one-step …
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Hypotheses for Scratch Behavior of Polymer Systems that Recover
Scratch recovery is a desirable property of many polymer systems. The reason why some materials have demonstrated excellent scratch recovery while others do not has been a mystery. Explaining the scratch resistance based upon the hardness of a material or its crosslink density is incorrect. In this …
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Batch separation of tetrafluoroethylene, hexafluoropropylene and octafluorocyclobutane
This dissertation details research aimed at designing a small batch distillation column to purify tetrafluoroethylene and hexafluoropropylene from a mixture containing tetrafluoroethylene, hexafluoropropylene and octafluorocyclobutane. As no vapour-liquid equilibrium data are available for these …