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 20 for “"waste plastics"”.
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Impact of waste plastics on asphalt concrete chemical and environmental characteristics
Plastics are moldable organic polymers with desired mechanical properties, which could be useful for application in asphalt concrete (AC) pavements. The objective of this study was to repurpose waste plastics in AC pavement, quantify the impact on its potential performance, and the environment. …
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The bacterial synthesis and characterisation of polyhydroxyalkanoates using waste plastics as carbon sources for novel applications
… environmentally neutral, biodegradable plastics that can be produced by bacteria. The structure of PHAs can be adapted for a wide range of applications, including biomaterials, 3D printing filaments, packaging and general household items. Some of the factors limiting the mass usage of …
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Synergistic use of high RA content and recycled waste plastics in asphalt mixtures. Innovative products and technologies for sustainable road pavements
L'abstract è presente nell'allegato / the abstract is in the attachment
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Utilization of thermal plasma for conversion of thermoplastic waste to oil products in a pyrolysis reaction
Chemical recycling of waste plastics has gained attention in last decade with nearly 170 million tonnes of deposited waste plastics annually. A chemical process known as pyrolysis converts thermoplastic waste to oil products. In this research work, direct current thermal plasma is designed and used …
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Encapsulation of Waste in Cementitious Systems for use in Civil Engineering Applications
… has led to the generation of huge volumes of waste plastics, which must be properly disposed of to prevent contamination of the natural environment. In line with current global efforts to tackle the enormity of plastic debris in the environment including ocean, this research evaluate the …
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Structural design of waste-thermoplastic wind turbine blade
… of life, which has led to the testing of thermoplastics to replace thermosets in the composite; thus making recycling possible. Another challenge, waste plastics of which 55% of all plastics produced in 2015 were discarded into the environment. Utilising waste thermoplastics for producing wind …
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Cost-effective processing of immiscible polymer blends into value-added fiber-based products
The current practice for recycling of mixed plastics relies on complex and time-consuming procedures for materials separation or the use of expensive compatibilizers for improving mechanical properties. A simple method for direct reuse of waste plastics without the pre-separation procedure or the …
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Recycling of plastics derived from end-of-life (EOL) electronic equipment
… focuses on a chemical process to separate mixed plastics from EOL electronic equipment.;The most prominent components of waste plastics, PC (Polycarbonate), PS (Polystyrene) and ABS (Acylonitrile Butadiene Styrene) from obsolete computers are taken to be samples in this work. Qualitative analysis …
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Degradação termocatalítica de misturas de poliolefinas e biomassa
The pyrolysis of waste plastics, particularly polyolefins, arouses great interest for the valorization of these waste, as it allows high yields of fuels and raw materials to be obtained for the benefit of the petrochemical industry.Pyrolysis of waste polypropylene (PP) and waste high density …
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Nothing Unwanted: Prototyping Matter out of Place
… with reclaimed materials. The design of waste, inevitably, often symbolizes the separation between society and its waste, marked by an intention to remove, re-form, and re-standardize. Zero-waste systems and circular economy often inadvertently create hidden wastes, labor, and carbon …
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Production of Bio-based Lactone Monomers for Intrinsically Recyclable Plastics
The development of intrinsically recyclable plastics is crucial to halt the accumulation of waste plastics in the environment. While great strides have been made in the design of novel polymers that exhibit desirable qualities and degrade back to their respective monomer at mild conditions, the …
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Biochemical Analysis of Poly(ethylene terephthalate) Film Degradation Kinetics of Engineered IsPETase Variants
… have become a global crisis, with 79% of waste plastics landfilled in 2015 and only 12% recycled, demonstrating the need for rapid improvements in waste management and recycling technologies. Poly(ethylene terephthalate) (PET) is a major plastic polymer that is heavily investigated for …
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Microrecycling of Batteries and Carbon-Containing Waste for Manufacturing Different Materials
… In this context, carbon from carbon-containing waste has emerged as a promising alternative. Each year, thousands of tons of waste rubber, automotive shredder residue (ASR), and waste plastics (e.g., polycarbonate) are generated, yet only a small fraction of these carbon-containing wastes is …
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Irradiated recycled plastic as a concrete additive for improved chemo-mechanical properties in hardened cement pastes
… compromising the concrete's strength. The use of waste plastics in concrete has been explored as a means of improving concrete's mechanical properties while also providing an efficient way to both re-purpose waste plastic and partially displace cement for the purpose of reducing carbon emissions. …
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A techno-economic study of the recycling of mixed plastics to useful products
… of recycling the components of mixed plastics waste have been studied in a two-part investigation: (a) An economic survey of the prospects for plastics recycling, the plastics waste arisings from retailing, building, automotive, light engineering and chemical industries have been …
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Polymeric Melodies: Polyetherimide Modification-Based Acoustic Membranes and Sonochemical Degradation of Polystyrene
… nanomaterials and the degradation of commodity plastics are two major areas in polymer chemistry. To achieve composite materials that meet the demands of modern technologies, polymers are modified using a vast array of chemistries, enabling the practical and effective deployment of …
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Quantifying land-based sources of plastic pollution in South Africa
… countries; others use proxies such as per capita waste generation and proportion of mismanaged waste to predict litter loads entering the sea. It thus remains unclear how accurate these predictions are, particularly for African countries where few field studies have been conducted. Due to its …
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Synthesis and kinetic processes in designed polymers
… solvent interactions. The simultaneous growth in waste plastics, 3D-printing, and implantable biomaterials has challenged chemists to develop new polymers able to meet the demands of real-world applications. In particular, there is increasing demand for smart polymers that change their shape or …
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Binders for Cedar Wood Sawdust
No abstract prepared.