Full metadata record
| DC Field | Value | Language |
|---|---|---|
| dc.contributor | School of Fashion and Textiles | en_US |
| dc.contributor.advisor | Jiang, Shou-xiang Kinor (SFT) | en_US |
| dc.creator | Cheung, Tin Chun | - |
| dc.identifier.uri | https://theses.lib.polyu.edu.hk/handle/200/13698 | - |
| dc.language | English | en_US |
| dc.publisher | Hong Kong Polytechnic University | en_US |
| dc.rights | All rights reserved | en_US |
| dc.title | Design, development and evaluation of shape transformable four-dimensional printed polymer-textile composites | en_US |
| dcterms.abstract | Four-dimensional printed materials refer to a class of advanced materials that can shape transform with the help of a stimuli. Such materials have broad applications including fashion and textiles products, biomedical devices, manufacturing, robotics and more. However, the results have historically been inconsistent and often shows poor performance, difficult to fully reverse/re-program and lacking in mechanical performance (i.e., bursting, tensile strength), thus making it incompatible for wearables and other textile products that requires consistent performance. Such factors have hindered its application into real-world functional products. | en_US |
| dcterms.abstract | In recent years, practitioners have investigated the extrusion of polymers onto textile substrates resulting in polymer-textile composites (PTCs). Its novelty lies in its high customisability and distinct mechanical properties owing to its multi-material composition. Whilst considerable progress has been made in both four-dimensional printing and PTC fields independently, existing theoretical and practical contributions in 4D printed polymer-textile composites (4DP PTC) research are insufficient and limited. | en_US |
| dcterms.abstract | This research bridges together four-dimensional printing and PTC techniques with aims to establish a systematic process involving the design, development, and evaluation of 4DP PTCs via using fused deposition modelling and polyurethane-based materials with textile substrates. The direct extrusion of thermo-responsive shape-memory polymers (SMPs) onto textile substrates opens new opportunities to develop highly adaptable and customisable textile-based materials for wearables and other textile products. 4DP PTC's versatility also promises new opportunities for embedding programmability with high customizability into non-electronic textile materials. Based on design experiments and lab-based work, a systematic design and decision-making process for 4DP PTC is also established. In this study, 4DP PTC prototypes are designed, produced, and analysed using this concept model. | en_US |
| dcterms.abstract | The theoretical and practical investigation of 4DP PTCs is systematised into three phases. Phase one identifies the design requirements, challenges, materials, and technologies forming a conceptual model for 4DP PTCs. Phase two offers room for creative exploration of PTCs and 4DP PTCs design, development, and evaluation via practice-led and lab-based experiments. Subsequently, the quantitative data deriving from the experiments are comparatively analysed to identify variables that influence 4DP PTC's mechanical properties and shape performance. This analysis help refine the design process and optimise material performance. In the final phase, 4DP PTCs were implemented in various textile-based design applications based on the findings from prior theoretical and practical experiments. | en_US |
| dcterms.abstract | This study delivers a new design approach for 4DP materials that bridges together two key disciplines. It results in efficient shape transformative materials that possess unique mechanical properties. Moreover, under this design concept, the creative potential of additive technologies is demonstrated, and furthers works on adaptable and shape transformative material design. The results highlight the aesthetics and functionality of 4DP PTCs and how its innate shape fixity properties can be exploited to develop highly adaptable and re-shapable textile-based products ranging from personal protective equipment to textile-based lampshade. In contrast with the current literature's use of shape recovery primarily as an eye-catching novelty, it further demonstrates the possibility for post-manufacture customisation by utilising 4DP PTC's innate shape fixity. Overall, this study provides a solid foundation for the further development and application of 4DP PTCs into practical and functional textile products. | en_US |
| dcterms.extent | 257 pages : color illustrations | en_US |
| dcterms.isPartOf | PolyU Electronic Theses | en_US |
| dcterms.issued | 2025 | en_US |
| dcterms.educationalLevel | Ph.D. | en_US |
| dcterms.educationalLevel | All Doctorate | en_US |
| dcterms.LCSH | Smart materials | en_US |
| dcterms.LCSH | Polymers | en_US |
| dcterms.LCSH | Composite materials | en_US |
| dcterms.LCSH | Textile fabrics | en_US |
| dcterms.LCSH | Shape memory materials | en_US |
| dcterms.LCSH | Hong Kong Polytechnic University -- Dissertations | en_US |
| dcterms.accessRights | open access | en_US |
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