PMMA for anti-counterfeit application
Shape memory materials are known for the ability to recover to their original shape by using the right kind of stimulus such as heat (thermal responsive), light (photo responsive) and chemical (chemo-responsive), after undergoing severe distortion. In this report, the shape memory effect of Poly...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2013
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| Online Access: | http://hdl.handle.net/10356/54104 |
| _version_ | 1826127834198835200 |
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| author | Zhang, Fan |
| author2 | Huang Weimin |
| author_facet | Huang Weimin Zhang, Fan |
| author_sort | Zhang, Fan |
| collection | NTU |
| description | Shape memory materials are known for the ability to recover to their original shape by using the right kind of stimulus such as heat (thermal responsive), light (photo responsive) and chemical (chemo-responsive), after undergoing severe distortion.
In this report, the shape memory effect of Polymethyl methacrylate (PMMA) is investigated and tested under controlled environment. PMMA is a clear plastic that is often used as shatterproof replacement for glass. The emphasis on this project is to fabricate samples of PMMA by making indentation of coin image onto PMMA at certain temperatures. PMMA underwent thermal analysis such as thermo-gravimetric analysis (TGA) differential scanning calorimetry (DSC) to determine their glass transition temperature and melting temperature. Two types of specimens are generated under constant displacement compression. One of them is compressed below its melting point (Temporary indentation) and another one above its melting point (Permanent indentation). The indentation on both types of sample is subjected to thermal recovery at different temperature below the temperature that they were compressed. Lastly, the levels of recovery under those temperatures are recorded and analyzed. |
| first_indexed | 2024-10-01T07:15:16Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/54104 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:15:16Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/541042023-03-04T18:25:30Z PMMA for anti-counterfeit application Zhang, Fan Huang Weimin School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics DRNTU::Engineering::Mechanical engineering Shape memory materials are known for the ability to recover to their original shape by using the right kind of stimulus such as heat (thermal responsive), light (photo responsive) and chemical (chemo-responsive), after undergoing severe distortion. In this report, the shape memory effect of Polymethyl methacrylate (PMMA) is investigated and tested under controlled environment. PMMA is a clear plastic that is often used as shatterproof replacement for glass. The emphasis on this project is to fabricate samples of PMMA by making indentation of coin image onto PMMA at certain temperatures. PMMA underwent thermal analysis such as thermo-gravimetric analysis (TGA) differential scanning calorimetry (DSC) to determine their glass transition temperature and melting temperature. Two types of specimens are generated under constant displacement compression. One of them is compressed below its melting point (Temporary indentation) and another one above its melting point (Permanent indentation). The indentation on both types of sample is subjected to thermal recovery at different temperature below the temperature that they were compressed. Lastly, the levels of recovery under those temperatures are recorded and analyzed. Bachelor of Engineering (Mechanical Engineering) 2013-06-13T08:15:51Z 2013-06-13T08:15:51Z 2013 2013 Final Year Project (FYP) http://hdl.handle.net/10356/54104 en Nanyang Technological University 87 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics DRNTU::Engineering::Mechanical engineering Zhang, Fan PMMA for anti-counterfeit application |
| title | PMMA for anti-counterfeit application |
| title_full | PMMA for anti-counterfeit application |
| title_fullStr | PMMA for anti-counterfeit application |
| title_full_unstemmed | PMMA for anti-counterfeit application |
| title_short | PMMA for anti-counterfeit application |
| title_sort | pmma for anti counterfeit application |
| topic | DRNTU::Engineering::Mechanical engineering::Mechanics and dynamics DRNTU::Engineering::Mechanical engineering |
| url | http://hdl.handle.net/10356/54104 |
| work_keys_str_mv | AT zhangfan pmmaforanticounterfeitapplication |