148 research outputs found
Re:Form - A New School Table
No full textRe:Form is a master thesis about a pupil table that enhances the activities in the classroom and creates an active learning environment for the teacher and the pupils. This is obtained through collaboration with four different schools and a school furniture design company. Through this collaboration it is discovered that the market is selling a dream to the schools that has little to do with the reality in the classrooms. With this knowledge the concept is developed to improve the flexibility in the classroom and give the option of clearing the floor of tables and give room to educational activities. Further geometrical studies make sure that pupils can be grouped efficiently together in groups of up to 6 or more. Additionally, the table is stackable and through multiple iteration it is made sure that the table behaves like a normal table any other time. Re:Form is a proposal that gives the teacher the power to create a learning environment that suits their needs for the education material, and give the pupils an interesting school day that does not become mundane and repetitive
Versity - A insulin diabetes device, fitting your life
No full textThis process report represents the development of a redesign and reinterpretationof insulin pens used to treat diabetes type-1. The project investigates emotional,practical, and stigma-related issues when treating diabetes with insulinpens. Having diabetes and sticking yourself with insulin needles several times aday often creates stigma and judgmental glances from surroundings.Therefore, this study will investigate how to challenge the design language ofthe classic insulin pen so that the user gets a more significant affiliation with it,like a new accessory or gadget. The process consists of interviews with users,several rounds of knowledge and concept iterations, and mock-up testing withusers. The final product proposal is a smaller physical product platform wherethe ‘base’ device is repeated within each variant. The group has proposed threedesigns with three individual features that will hit selected user groups
Processing, compatibilization and molecular dynamics simulations of immiscible polyolefin/copolyester blends
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Sustainable carbon fibres from lignin
No full textThe goal of this thesis was to create environmentally friendly carbon fibres with lignin as the precursor via the electrospinning method. They were activated to investigate them as a potential carbon capture material. Four of the tested solutions were able to produce uniform and unbeaded fibres, which were stabilised and carbonised without being fused together. The fibres were characterised and analysed with scanning electron microscopy, x-ray diffraction, Raman spectroscopy and their CO2 adsorption was investigated in a thermogravimetric analyzer. The effects of the solution concentrations on the characteristics of the fibres were investigated, and carbon fibres with a diameter as low as 310 nm were produced. The Raman data showed similar results for all samples. The activated fibres were able to capture 28 mg/g of CO2, which shows that this sustainable material has a potential in this application
PROCESSING AND CHARACTERIZATION OF POLYETHYLENE TEREPHTALATE GLYCOL-MODIFIEDEPOXY CARBON NANOTUBES-GLASS FIBERS COMPOSITES
No full textGlass fibers are materials commonly employed for the reinforcement of several polymers. Aircraft parts, rocket motor cases and automobiles, are examples of several structural composites where glass fibers have been used. It is well known that increasing the efficiency of stress transfer from the polymeric material to the fiber may lead to enhanced mechanical performance and, as with any composite materials, the interface between both materials play a critical role in the final mechanical properties. The presence of carbon nanotubes on the fibers surface may improve the adhesion between fibres and matrix since they may interlock with the polymer chains and thus creating a physically strong adhesion between the two phases.In this work, carbon nanotubes were synthesized on the surface of carbon and glass fibers, by chemical vapour deposition of ethylene, under different experimental conditions. The resulting fibers-carbon nanotubes hybrids were further characterized by energy dispersive X-ray analyses, scanning electron microscopy, Raman spectroscopy and thermogravimetric analyses. The selected glass fibers-carbon nanotubes synthesized were embedded in polyethylene terephtalate glycol (PETG) and epoxy resin and the effect of the quality and amount of carbon nanotubes within the different samples on the fiber/matrix interfacial strength of PETG and epoxy fiber composites was evaluated by single fiber fragmentation tests (SFFT), microscopy and photoelasticity analyses. The results were compared with the sized treated fibers. In relation to the PETG fiber composites, the results show that the sized treated fibers have a better fiber/matrix adhesion, when compared to fibers with CNTs grown on their surfaces. No significant difference in the fiber/matrix interfacial strength was found between the PETG composites using glass fibers containing carbon nanotubes on their surfaces. On the other hand, the presence of carbon nanotubes on the fibers surface seems to enhance the interfacial bonding between fiber and epoxy. These observations are however only based on microscopy and photoelasticity analyses. <br/
Chemical Recycling and Repurposing Strategies for Epoxy-Based Thermosets: Toward Functional Circularity
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