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 5 of 5 for “"Polymer chain alignment"”.
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Mechanical and optical characterization of force induced chemical reactions in solid state linear polymers
… chemical species (mechanophores) into polymer backbones, mechanical force can drive chemical reactions. Mechanophores have been developed with potential as damage sensing, self-healing, and self-reinforcing materials. This research investigates the conditions for promoting mechanophore …
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Controlling the alignment and degradation of 3D printed poly-L-lactic acid for redesigned coronary stents
… PLA. This thesis explored methods to improve the polymer chain alignment and resultant Young’s modulus of 3D printed single-layer poly-L-lactic acid (PLLA). Results showed that polymer chain alignment can be increased by raising the bed temperature, lowering the nozzle temperature or increasing …
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Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization
… molecular organization in organic semiconducting polymer thin films is an important prerequisite for enhancing the efficiency of organic thin-film devices, including organic light-emitting and photovoltaic devices. The current “top-down” paradigm for making such devices is based on utilizing …
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Thermoelectric and charge transport properties in doped and aligned conjugated polymers
… power factor for semicrystalline conjugated polymers, particularly PBTTT, through methodologies such as ion-exchange doping, high-temperature rubbing and electrochemical doping. Central to this investigation is a deepened comprehension of the transport physics and the modelling of temperature …
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Engineering Mechanocaloric Effects and Tunable Thermal Conductivity in Amorphous Elastic Polymer Fibers
… applications. Properly-engineered polymer materials may provide solutions to both challenges in a synergistic way. Among all materials, polymers stand out by several figures of merit, including low cost, chemical inertness, ease of manufacture and scalability, and light weight. They …