3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent
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| Format: | Bachelor thesis |
| Language: | ENG |
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Universiti Teknologi Malaysia
2025
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| Online Access: | https://utmik.utm.my/handle/123456789/41732 |
| Abstract | Abstract here |
| _version_ | 1852582462522130432 |
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| author | Lee, Kok Wai |
| author2 | Habibah Ghazali, supervisor |
| author_facet | Habibah Ghazali, supervisor Lee, Kok Wai |
| author_sort | Lee, Kok Wai |
| description | Not available |
| format | Bachelor thesis |
| id | utm-123456789-41732 |
| institution | Universiti Teknologi Malaysia |
| language | ENG |
| publishDate | 2025 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| record_pdf | Abstract |
| spelling | utm-123456789-417322025-08-21T04:08:48Z 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent Lee, Kok Wai Habibah Ghazali, supervisor Mechanical engineering Not available 3D/4D printing is an active additive manufacturing research topic because it is advantageous to many areas such as manufacturing and biomedical sectors. Polymer blends are utilised as ‘inks’ to make 3D structures. Acrylonitrile butadiene styrene (ABS) photopolymer UV resin is suitable to make polymer blends because it has good mechanical properties. On the other hand, polycaprolactone (PCL) is a thermoplastic polyester which grants a polymer resin both healing and shape memory abilities when blended together. Such abilities are important to improve the durability of ABS photopolymer UV resin. However, it is not known whether PCL is able to imbue ABS the abilities because no work is done to address the issues. The objectives of this project are to investigate the printability of the PCL/ABS photopolymer UV resin blend and investigate the thermal activated healing and shape memory abilities of the PCL/ABS resin blend. This project aims to show that blending ABS with PCL enables the 3D specimens printed using the resin blend to exhibit thermal activated healing and shape memory abilities. The resin blend is synthesised to fulfil the printing requirements of digital light processing (DLP). Synthesis is done by melt-mixing 100g of ABS photopolymer UV resin and 5g of PCL pellets using a magnetic stirrer at 200rpm and 90°C for three hours. Acetone is added during the melt-mixing process. The resulting homogenous resin blend contains 5 wt% PCL. Next, 3D specimens are printed using the resin blend. On top of that, 3D control specimens are also printed using ABS photopolymer UV resin. Thermal characterisation of the two classes of specimens is conducted via differential scanning calorimetry (DSC). Theoretical study on past research findings of PCL-enriched polymer blends is performed which focuses on three aspects namely thermal activated healing ability, healing mechanism and thermal activated shape memory ability. This is done to produce reasonable theoretical predictions regarding the three aforementioned aspects of the PCL/ABS resin blend. The 3D specimens printed using the PCL/ABS resin blend have imperfections namely deformation and delamination. They are a result of PCL-modification of ABS which causes the latter being unable to fully support shape formation during printing and experimental errors occurred during film sheet set-up and specimen removal. Based on the DSC results, the glass transition temperatures of the 3D control specimens and 3D PCL-enriched specimens are 110.40? and 86.90? respectively. The dissimilar values indicate that both PCL and ABS phases are completely miscible in the resin blend. Besides, four theoretical predictions are made. Firstly, the PCL/ABS resin blend exhibits thermal activated healing ability because PCL acts as the healing agent. Secondly, the PCL/ABS resin blend does not possess the bricks/mortar morphology due to its low PCL content of 5 wt%. Thirdly, the healing mechanism of the PCL/ABS resin blend is due to the “bleeding” behaviour of the molten PCL phase. Lastly, the PCL/ABS resin blend exhibits thermal activated shape memory ability due to PCL’s shape memory functionality. The experimental findings and theoretical predictions obtained indicate the PCL/ABS photopolymer UV resin blend has the potential to be utilised by 3D/4D printing. fahmimoksen UTM 135 p. Project Paper (Bachelor of Engineering (Mechanical-Materials)) - Universiti Teknologi Malaysia, 2021 2025-03-10T03:03:35Z 2025-03-10T03:03:35Z 2021 Bachelor thesis https://utmik.utm.my/handle/123456789/41732 vital:154067 valet-20231030-102415 ENG Closed Access UTM Complete Unpublished Completion application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Mechanical engineering Lee, Kok Wai 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title | 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title_full | 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title_fullStr | 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title_full_unstemmed | 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title_short | 3D/4D printing of photopolymer uv resin consisting Polycaprolactone (PCL) as healing agent |
| title_sort | 3d 4d printing of photopolymer uv resin consisting polycaprolactone pcl as healing agent |
| topic | Mechanical engineering |
| url | https://utmik.utm.my/handle/123456789/41732 |
| work_keys_str_mv | AT leekokwai 3d4dprintingofphotopolymeruvresinconsistingpolycaprolactonepclashealingagent |