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 10 of 10 for “"Polyester fibers"”.
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Aging model for commercial polymers
… chloride, high-density polyethylene, and polyester reinforced with polyester fibers specimens have been investigated. These materials are commercially available and are currently used in trenchless relining of sewer pipes. The analysis uses the effective-time theory and time-temperature …
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Characterization of Resistance Change in Stretchable Silver Ink Screen Printed on TPU-Laminated Fabrics Under Cyclic Tensile Loading
… traces strained on TPU laminated to spandex (polyester) fibers had an average rate of increase in resistance significantly lower than that of traces strained on bare TPU. The variation in predicted resistance was significantly lower in the spandex group than in the TPU group. Trace width was …
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An evaluation of polyelectrolytes in the chemical treatment of textile mill wastes
With the advent of polyester fibers, disperse dyes, with complex chemical carriers and surfactants have been introduced. These dispersing agents inhibited chemical treatment and passed through biological facilities untreated. Therefore, it was the purpose of this study to ascertain whether chemical …
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Effect of heat treatment on tensile properties, dyeability and crystallinity of nylon and polyester filament yarns
Changes in nylon 6.6 and polyester filament yarns were determined after heat treatment with dry heat at various temperatures under constant length conditions. An attempt was made to relate structural changes and changes in physical properties due to heat setting. Density, obtained by the density …
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Performance of asphalt mixtures containing steel slag aggregate and synthetic fibers
… with polyvinyl alcohol (PVA), acrylic, and polyester fibers at different dosages of 0.05, 0.15, and 0.3% by weight of the aggregates, respectively. The conducted performance tests were resilient modulus, dynamic creep, rutting depth, moisture susceptibility, and cracking resistance. The …
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Effects of kenaf/polyester blending ratios on physical and mechanical properties of yarns produced from ring spinning system
Yarns with natural-synthetic hybrid fibers are becoming increasingly popular with the increase of environmental awareness. This is mainly because the hybridization of fiber may reduce the use of synthetic fibers in the making of yarns. Note that polyester, an excellent synthetic fiber, is difficult …
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Solubilization-emulsification processes in nonionic surfactant-water-liquid triglyceride systems
… with drops initially attached to individual polyester fibers confirmed that little oil remained on the fibers when the emulsification was extensive.
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Chemometrics applied to the discrimination of synthetic fibers by microspectrophotometry
… and reproducible method to compare colored fibers for forensic purposes. The use of chemometric techniques applied to spectroscopic data can provide valuable discriminatory information especially when looking at a complex dataset. Differentiating a group of samples by employing chemometric …
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Forensic Analysis of Trace Evidence Fibers and Drugs of Abuse In Biological Matrices Using Chromatographic and Mass Spectrometric Methods
<p>Textile fibers found at crime scenes as trace evidence often provide leads or confirmations in criminal investigations. The development of analytical techniques for forensic discrimination of fibers by micro-extractions of dyes followed by liquid chromatography (LC) or capillary electrophoresis …