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 47 for “"vinyl chloride"”.
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Cometabolic and Growth-Linked Biodegradation of Vinyl Chloride Under Aerobic Conditions
These findings demonstrate the existence of isolates that can aerobically grow on VC in a robust manner, or cometabolize VC rapidly when grown on ethene or ethane.
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Morphology-Property Relationships in Polymers: Poly(vinyl Chloride) and Polybutene-1 (Polyvinyl)
Solid state PVC processed by various methods were characterized. The (as polymerized) virgin polymer is higher in crystallinity than following normal melt processing. Crystallinity determined by x-ray and Fourier transform infrared (FTIR) is in good agreement when appropriately calculated. Two …
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The adsorption of vinyl chloride and vinylidene chloride monomers on their polymers
… of the kinetics and equilibria of:- (a) Vinyl chloride monomer vapour adsorbed on polyvinyl chloride; (b) Vinylidene chloride monomer vapour adsorbed on polyvinyl chloride; (c) Vinylidene chloride monomer vapour adsorbed on polyvinylidene chloride; it became evident that, for a number of …
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Rate-dependent deformation behavior of poss-filled and plasticized poly(vinyl chloride)
… (mPOSS) and dioctyl phthalate (DOP) into poly(vinyl chloride) (PVC) through melt blending. mPOSS was found to be miscible with PVC up to 15 wt% added. Both mPOSS and DOP plasticize PVC and reduce the [alpha]-transition temperature. While mPOSS also reduces the secondary ([beta]) transition …
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The impact of improved materials in poly(vinyl chloride)-based endotracheal tubes
… between epithelial cells and current poly(vinyl chloride)-based ET materials, as well as some ET samples embedded with materials intended to improve biocompatibility properties of the tubes. Cells were grown in wells with small samples of ETs and proliferation and migration were observed …
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Production and characterisation of poly(vinyl chloride) (PVC) hollow fibre membranes for gas separation applications
… work was focused in the development of polyvinylchloride (PVC) hollow fibre membranes suitable for gas separation applications using the dry/wet phase inversion technique.The first part of this work involved the preparation of quaternary polymer solutions containing polyvinylchloride (PVC), …
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The Vibrational Spectra of Chlorosubstituted Hydrocarbons
… in the understanding of the properties of poly (vinyl chloride).<br/><br/>The physical properties of poly (vinyl chloride) and the capacity to fabricate various products depends on detailed structure and conformation of the polymer chain. Conformational content of model compounds by infrared …
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Next-generation sequencing as a tool for investigating the in vivo biological consequences of DNA lesions and its applications on the ethenoguanine, 8-oxoguanine and 1,3-butadiene-induced lesions
… which are generated by oxidative stress and vinyl chloride exposure. N²,3-Ethenoguanine potently induces G to A mutations, the same type of mutation previously observed in vinyl chloride-associated tumors. We also found that N²,3-ethenoguanine cannot be repaired by AlkB, a DNA repair enzyme …
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Triptycenes as a molecular building block to introduce internal free volume in organic materials
… and works for both liquid crystalline and poly(vinyl chloride) hosts.
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Surface coating deterioration studies
… pollutant gas (in this case nitric oxide). Poly(vinyl chloride) (PVC) plastisol surface coatings have been exposed to natural and artificial weathering and a comparison of the effects of these two types of weathering has been made by use of various analytical techniques. These techniques have …
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The bonding of plasticized polyvinyl chloride sheet to metal
… factors affecting the bond strength between polyvinyl chloride sheeting and metal. The metals used in this investigation were aluminum, brass, copper, nickel, low carbon steel, and stainless steel. The plastic sheeting was bonded to the metal by means of synthetic adhesive. Five different …
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Reflectance and Related Studies of The Weathering of Surface Coatings
… class of coatings - namely, those based on poly (vinyl chloride) (PVC) - including the roles played by the various additives present in the system. Finally, in addition to both the natural and artificial weathering tests which have been conducted at various outdoor sites and under various …
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Development of Commercial Applications for Recycled Plastics Using Finite Element Analysis
… jugs made of High-Density Polyethylene (HDPE), Vinyl seats made of Poly Vinyl Chloride (PVC) and small amount of Polypropylene (PP) and Urethane, electronic scrap made of engineering resins like Acrylo-Nitrile-Butadiene Styrene (ABS), Polystyrene (PS) and Polycarbonate (PC), agriculture waste …
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The versatile E. coli adaptive response protein AlkB mitigates toxicity and mutagenicity of etheno-, ethano-, and methyl-modified bases in vivo
… of DNA with metabolites of the carcinogen vinyl chloride or with breakdown products generated by lipid oxidation. In this case, direct repair proceeds through epoxidation of the etheno bond, creating an intermediate that hydrolyzes to a glycol form and finally releases the two-carbon bridge …
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Investigating the Biostimulating Effects of ESO Addition to a TCE Contaminated Site
… trichloroethene (TCE), dichloroethene (DCE), and vinyl chloride (VC) to non-toxic compounds in a process called reductive dechlorination. Microorganisms that are capable of dechlorination usually require reducing conditions as well as bioavailable hydrogen and carbon sources. Emulsified vegetable …
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Lethal and Semilethal Mutation Frequency of the First and Second Chromosomes in Two Natural Populations of "Drosophila melanogaster"
… other suspected mutagens and carcinogens, i.e., vinyl chloride, chloroform, etc., have reportedly been found in subsurface soil and waters near downtown Des Moines, Iowa. Lethal gene frequency of the first (X) and second chromosomes of the toxic population sample (captured within the toxic plume …
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