Characterization of surface wettability
Objective: The author has conducted a series of experiments to characterize and investigate the surface wettability of polydimethylsiloxane (PDMS) after the surface modification technique called Slippery Lubricant-Infused Porous Surfaces (SLIPS). Methods: Different cross-linking ratios of PDMS (1:5,...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2021
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| Online Access: | https://hdl.handle.net/10356/150732 |
| _version_ | 1826121623153934336 |
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| author | Tan, Jasmine Jie Min |
| author2 | Zhang Yi |
| author_facet | Zhang Yi Tan, Jasmine Jie Min |
| author_sort | Tan, Jasmine Jie Min |
| collection | NTU |
| description | Objective: The author has conducted a series of experiments to characterize and investigate the surface wettability of polydimethylsiloxane (PDMS) after the surface modification technique called Slippery Lubricant-Infused Porous Surfaces (SLIPS). Methods: Different cross-linking ratios of PDMS (1:5, 1:10, and 1:15) will prepared and immersed in varying viscosity of silicone oil (10 cSt, 100 cSt, and 500 cSt) and soaked for the different duration (30 mins, 1 hour, 3 hours, 24 hours and 48 hours). After soaking, results were characterized by 1) contact angle measurement, 2) scanning electron microscopy, 3) degree of swelling and 4) surface roughness. Results: After infusion of silicone oil, it is demonstrated that a higher cross-linking ratio will result in higher contact angle, which will lead to more swelling and higher surface roughness. Similarly, a longer soaking duration will lead to more swelling and higher surface roughness of the samples. It is shown that the viscosity of the silicone oils might not be a big factor in affecting the surface wettability of the samples. Conclusion: SLIPS will be an ideal and simple surface modification for PDMS. In addition, the highest surface wetting is achieved through the lowest cross-linking ratio soaked in the least viscosity of silicone oil. |
| first_indexed | 2024-10-01T05:35:15Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/150732 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:35:15Z |
| publishDate | 2021 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1507322021-06-02T07:51:23Z Characterization of surface wettability Tan, Jasmine Jie Min Zhang Yi School of Mechanical and Aerospace Engineering yi_zhang@ntu.edu.sg Engineering::Mechanical engineering Objective: The author has conducted a series of experiments to characterize and investigate the surface wettability of polydimethylsiloxane (PDMS) after the surface modification technique called Slippery Lubricant-Infused Porous Surfaces (SLIPS). Methods: Different cross-linking ratios of PDMS (1:5, 1:10, and 1:15) will prepared and immersed in varying viscosity of silicone oil (10 cSt, 100 cSt, and 500 cSt) and soaked for the different duration (30 mins, 1 hour, 3 hours, 24 hours and 48 hours). After soaking, results were characterized by 1) contact angle measurement, 2) scanning electron microscopy, 3) degree of swelling and 4) surface roughness. Results: After infusion of silicone oil, it is demonstrated that a higher cross-linking ratio will result in higher contact angle, which will lead to more swelling and higher surface roughness. Similarly, a longer soaking duration will lead to more swelling and higher surface roughness of the samples. It is shown that the viscosity of the silicone oils might not be a big factor in affecting the surface wettability of the samples. Conclusion: SLIPS will be an ideal and simple surface modification for PDMS. In addition, the highest surface wetting is achieved through the lowest cross-linking ratio soaked in the least viscosity of silicone oil. Bachelor of Engineering (Mechanical Engineering) 2021-06-02T07:51:23Z 2021-06-02T07:51:23Z 2021 Final Year Project (FYP) Tan, J. J. M. (2021). Characterization of surface wettability. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/150732 https://hdl.handle.net/10356/150732 en B288 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering Tan, Jasmine Jie Min Characterization of surface wettability |
| title | Characterization of surface wettability |
| title_full | Characterization of surface wettability |
| title_fullStr | Characterization of surface wettability |
| title_full_unstemmed | Characterization of surface wettability |
| title_short | Characterization of surface wettability |
| title_sort | characterization of surface wettability |
| topic | Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/150732 |
| work_keys_str_mv | AT tanjasminejiemin characterizationofsurfacewettability |