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 17 of 17 for “"polyvinylchloride"”.
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Observing the Main Effects of Automotive Primers when Bonding to Polyvinylchloride
… applications, such as bonding stainless steel to Polyvinylchloride (PVC). This application is commonly seen on the outside of side windows on high-end model vehicles.</p><p>Multiple studies were performed to gain further understanding when bonding PVC to glass in order to provide the strongest …
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Coating of Polyvinylchloride for Reduced Cell / Bacterial Adhesion and Antibacterial Properties
A Polyvinylchloride surface was modified by coating a biocompatible, hydrophilic and antibacterial polymer by a mild surface modification method. The surface was first activated and then functionalized, followed by coating with polymer. The surface functionality was evaluated using cell adhesion, …
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The selective separation and extraction of metals using membrane technology
… containing the extractant Aliquat 336 and PVC (polyvinylchloride).
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A prediction of polymer wear using polymer mechanical properties and surface characterization parameters
… (real less than apparent area). Wear data for polyvinylchloride (PVC) and polychlorotrifluoroethylene (PCTFE) was obtained on a pin-on-disk machine using neutron activation analysis A (NAA). Observations of the wear process were made in the scanning electron microscope (SEM) both before, …
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A study of chlorinated polymer coatings in a fretting interface
… determine whether chlorinated polymers such as polyvinylchloride (PVC) and polyvinylidenechloride (PVDC) degrade in a fretting interface. Polymer coated 52100 steel balls are fretted against a polished 1045 steel plate for 30 minutes in air and nitrogen at 25-30 percent and greater than 95 …
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The development of magnetic particle technology for application to environmental remediation
… of iron particles with polyethylene (PE) or polyvinylchloride (PVC) to magnetically harvest various contaminants. In this context, methods have been developed for the production of research quantities of particles of different sizes and with various textures. The pick up characteristics for a …
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Production and characterisation of poly(vinyl chloride) (PVC) hollow fibre membranes for gas separation applications
… present 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 …
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Promoting oxygenation of vacuum packaged fresh pork using soybean leghemoglobin
… randomly assigned to one of seven treatments: 1) polyvinylchloride (PVC) packaged, 2) vacuum packaged (Vac-pack), 3) 0.2 mL of Tris-Buffer, 4) 0.2 mL of high leghemoglobin high pH (HLbHpH), 5) 0.2 mL of high leghemoglobin low pH (HLbLpH), 6) 0.2 mL of low leghemoglobin high pH (LLbHpH), and 7) 0.2 …
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Spatiotemporal Dynamics of Microbial Communities Colonizing Plastic Tent Fabrics in a Tropical Environment
… In this study, six tent fabrics (A-F) containing polyvinylchloride (PVC) coatings were suspended in the tropical atmospheres of Horoko, Panama and Affobaka, Suriname for two years. At seven timepoints (1-, 2-, 3-, 6-, 9-, 12- and 24-months), fabric replicates were sampled for the quantification of …
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Aspects of marine fouling in western Cape waters
… aluminium, stainless steel, fibre glass and polyvinylchloride, but was reduced on non-wettable silicon rubber and corrodible mild steel. Macrofouling was characterized by seasonal succession with minimum colonization rates during winter, when adverse weather and low temperature conditions …
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Mass Spectral Studies to Investigate Butylbenzene Fragmentation Pathway and Pyrolysis Products.
… pyrolysis products were polystyrene, polyvinylchloride, polybutadiene, yellow-pine, nylon carpet and padding. Experiments were also performed to investigate the influence of hydrocarbons on the formation of pyrolysis.
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Development of a Biofilm Model for Evaluating Poultry Drinking Water Sanitation Procedures
… were conducted to evaluate biofilm growth on polyvinylchloride (PVC) surfaces when exposed to treated/untreated water sources (test water) that are typically supplied in commercial barns. PVC test coupons (15.16 cm2) were immersed in test water in beakers to grow biofilm. Test water supplies …
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Fundamental studies of the tribological behavior of thin polymeric coatings in fretting contact using infrared and photo/video techniques
… (PMMA), polysulfone (PSO), polyvinylchloride (PVC), and polyvinylidenechloride (PVDC) were studied at a given load (20 N), frequency (150 Hz), amplitude (100 JLm), and film thickness (55 p.m). The surface temperatures generated were generally low and below the glass …
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Evaluation of bacterial sampling methods for use with the bacterial tag-encoded flexible (FLX) amplicon pyrosequencing (bTEFAP) technique
… Studies comparing the performance of the SKC Polyvinylchloride (PVC) and SKC gelatin filters in IOM samplers to an impinger - the SKC biosampler - were conducted in a previously characterized bioaerosol chamber using a Collision nebulizer. The challenge organism was a spore former, Bacillus …
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Biocompatible circuits : inflammation and soluble adhesion molecules after cardiopulmonary bypass
… of the CPB circuit consist of stainless steel, polyvinylchloride (PVC), polycarbonate and other carbon-based plastics. In order to attenuate the negative sequelae of blood-circuit contact related inflammatory response, industry developed the biocompatible circuit (BCC) coating for the disposable …
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The effect of viscoelastic deformation in pipe cracks on leakage response to variations in pressure
… in High Density Polyethylene (HDPE) and Polyvinylchloride (PVC) pipes are investigated. HDPE and PVC are polymeric materials and therefore exhibit a viscoelastic response to applied stress and applied strain. Viscoelastic responses include creep, relaxation, hysteresis and time …
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Emissions of Phthalate Plasticizer from Polymeric Building Materials
… as plasticizers to enhance the flexibility of polyvinylchloride (PVC) products, as well as in humectants, emollients, and antifoaming agents. Phthalates are found in a wide range of consumer products including floor and wall coverings, car interior trim, floor tiles, gloves, footwear, …