Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles
Highly hydrophobic thermosetting polyurethane (TSU) surfaces with micro-nano hierarchical structures were developed by a simple process combined with sandpaper templates and nano-silica embellishment. Sandpapers with grit sizes varying from 240 to 7000 grit were used to obtain micro-scale roughness...
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| Format: | Article |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/48999/ |
| _version_ | 1848797898964205568 |
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| author | Yang, Guang Song, Jialu Hou, Xianghui |
| author_facet | Yang, Guang Song, Jialu Hou, Xianghui |
| author_sort | Yang, Guang |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Highly hydrophobic thermosetting polyurethane (TSU) surfaces with micro-nano hierarchical structures were developed by a simple process combined with sandpaper templates and nano-silica embellishment. Sandpapers with grit sizes varying from 240 to 7000 grit were used to obtain micro-scale roughness on an intrinsic hydrophilic TSU surface. The surface wettability was investigated by contact angle measurement. It was found that the largest contact angle of the TSU surface without nanoparticles at 102 ± 3 ° was obtained when the template was 240-grit sandpaper and the molding progress started after 45 min curing of TSU. Silica nanoparticles modified with polydimethylsiloxane were scattered onto the surfaces of both the polymer and the template to construct the desirable nanostructures. The influences of the morphology, surface composition and the silica content on the TSU surface wettability were studied by scanning electron microscopy (SEM), attenuated total reflection (ATR) infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The surface of the TSU/SiO2 nanocomposites containing 4 wt% silica nanoparticles exhibited a distinctive dual-scale structure and excellent hydrophobicity with the contact angle above 150°. The mechanism of wettability was also discussed by Wenzel model and Cassie-Baxter model. |
| first_indexed | 2025-11-14T20:11:12Z |
| format | Article |
| id | nottingham-48999 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:11:12Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-489992020-05-04T19:26:02Z https://eprints.nottingham.ac.uk/48999/ Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles Yang, Guang Song, Jialu Hou, Xianghui Highly hydrophobic thermosetting polyurethane (TSU) surfaces with micro-nano hierarchical structures were developed by a simple process combined with sandpaper templates and nano-silica embellishment. Sandpapers with grit sizes varying from 240 to 7000 grit were used to obtain micro-scale roughness on an intrinsic hydrophilic TSU surface. The surface wettability was investigated by contact angle measurement. It was found that the largest contact angle of the TSU surface without nanoparticles at 102 ± 3 ° was obtained when the template was 240-grit sandpaper and the molding progress started after 45 min curing of TSU. Silica nanoparticles modified with polydimethylsiloxane were scattered onto the surfaces of both the polymer and the template to construct the desirable nanostructures. The influences of the morphology, surface composition and the silica content on the TSU surface wettability were studied by scanning electron microscopy (SEM), attenuated total reflection (ATR) infrared (IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The surface of the TSU/SiO2 nanocomposites containing 4 wt% silica nanoparticles exhibited a distinctive dual-scale structure and excellent hydrophobicity with the contact angle above 150°. The mechanism of wettability was also discussed by Wenzel model and Cassie-Baxter model. Elsevier 2018-01-09 Article PeerReviewed Yang, Guang, Song, Jialu and Hou, Xianghui (2018) Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles. Applied Surface Science . ISSN 0169-4332 Thermosetting polyurethane; Hydrophobicity; Sandpaper template; Silica nanoparticles; Hierarchical structure https://www.sciencedirect.com/science/article/pii/S0169433218300199 doi:10.1016/j.apsusc.2018.01.017 doi:10.1016/j.apsusc.2018.01.017 |
| spellingShingle | Thermosetting polyurethane; Hydrophobicity; Sandpaper template; Silica nanoparticles; Hierarchical structure Yang, Guang Song, Jialu Hou, Xianghui Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title | Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title_full | Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title_fullStr | Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title_full_unstemmed | Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title_short | Fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| title_sort | fabrication of highly hydrophobic two-component thermosetting polyurethane surfaces with silica nanoparticles |
| topic | Thermosetting polyurethane; Hydrophobicity; Sandpaper template; Silica nanoparticles; Hierarchical structure |
| url | https://eprints.nottingham.ac.uk/48999/ https://eprints.nottingham.ac.uk/48999/ https://eprints.nottingham.ac.uk/48999/ |