Synthesis and characterization of polyboronicsiloxanes
The majority of these injuries are caused by athletes who did not wear protective equipment, demonstrating the importance of wearing protective equipment. Around 75 million people worldwide suffer from different forms of sports-related injuries annually. Impact-absorbing protective equipment i...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/156227 |
| _version_ | 1826109930437869568 |
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| author | Yeo, Criss Bak Haw |
| author2 | Alfred Tok Iing Yoong |
| author_facet | Alfred Tok Iing Yoong Yeo, Criss Bak Haw |
| author_sort | Yeo, Criss Bak Haw |
| collection | NTU |
| description | The majority of these injuries are caused by athletes who did not wear protective
equipment, demonstrating the importance of wearing protective equipment. Around
75 million people worldwide suffer from different forms of sports-related injuries
annually. Impact-absorbing protective equipment is widely used to prevent injuries. In
terms of impact protection, shear stiffening gels (SSG) offer several advantages
including fast response time, self-healing properties, and adaptability to stress fields
and mechanical stress. The most successful representative of an SSG is
Polyborosiloxane (PBS). PBS has unique properties that offer excellent flexibility and
impact resistance. Even though the material is brittle under rapid extensional strain, it
still reveals significant viscoelasticity, enabling it to be used in shock absorbers and
damping buffers. Boronic acid reacts with polydimethylsiloxane (PDMS) to form
boron bonds, which is believed to be responsible for this property. There is still
uncertainty as to what type of dynamic bonds affects the dynamic properties of PBS.
The study aims to prove that the B-O dative bonds are shown to be the major cause of
the unique shear-stiffening properties of PBS. |
| first_indexed | 2024-10-01T02:26:29Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/156227 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:26:29Z |
| publishDate | 2022 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1562272022-04-07T12:41:57Z Synthesis and characterization of polyboronicsiloxanes Yeo, Criss Bak Haw Alfred Tok Iing Yoong School of Materials Science and Engineering MIYTok@ntu.edu.sg Engineering::Materials The majority of these injuries are caused by athletes who did not wear protective equipment, demonstrating the importance of wearing protective equipment. Around 75 million people worldwide suffer from different forms of sports-related injuries annually. Impact-absorbing protective equipment is widely used to prevent injuries. In terms of impact protection, shear stiffening gels (SSG) offer several advantages including fast response time, self-healing properties, and adaptability to stress fields and mechanical stress. The most successful representative of an SSG is Polyborosiloxane (PBS). PBS has unique properties that offer excellent flexibility and impact resistance. Even though the material is brittle under rapid extensional strain, it still reveals significant viscoelasticity, enabling it to be used in shock absorbers and damping buffers. Boronic acid reacts with polydimethylsiloxane (PDMS) to form boron bonds, which is believed to be responsible for this property. There is still uncertainty as to what type of dynamic bonds affects the dynamic properties of PBS. The study aims to prove that the B-O dative bonds are shown to be the major cause of the unique shear-stiffening properties of PBS. Bachelor of Engineering (Materials Engineering) 2022-04-07T12:41:56Z 2022-04-07T12:41:56Z 2022 Final Year Project (FYP) Yeo, C. B. H. (2022). Synthesis and characterization of polyboronicsiloxanes. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/156227 https://hdl.handle.net/10356/156227 en application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Materials Yeo, Criss Bak Haw Synthesis and characterization of polyboronicsiloxanes |
| title | Synthesis and characterization of polyboronicsiloxanes |
| title_full | Synthesis and characterization of polyboronicsiloxanes |
| title_fullStr | Synthesis and characterization of polyboronicsiloxanes |
| title_full_unstemmed | Synthesis and characterization of polyboronicsiloxanes |
| title_short | Synthesis and characterization of polyboronicsiloxanes |
| title_sort | synthesis and characterization of polyboronicsiloxanes |
| topic | Engineering::Materials |
| url | https://hdl.handle.net/10356/156227 |
| work_keys_str_mv | AT yeocrissbakhaw synthesisandcharacterizationofpolyboronicsiloxanes |