Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition
Preferred crystallographic orientation (texture) in thin films frequently has a strong effect on the properties of the materials and it is important for stable surface properties. Organized molecular films of poly-perfluorodecylacrylate p(PFDA) were deposited by initiated Chemical Vapor Deposition (...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2014
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| Online Access: | http://hdl.handle.net/1721.1/90578 https://orcid.org/0000-0001-6127-1056 |
| _version_ | 1826216968428978176 |
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| author | Coclite, Anna Maria Shi, Yujun Gleason, Karen K. |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Coclite, Anna Maria Shi, Yujun Gleason, Karen K. |
| author_sort | Coclite, Anna Maria |
| collection | MIT |
| description | Preferred crystallographic orientation (texture) in thin films frequently has a strong effect on the properties of the materials and it is important for stable surface properties. Organized molecular films of poly-perfluorodecylacrylate p(PFDA) were deposited by initiated Chemical Vapor Deposition (iCVD). The high tendency of p(PFDA) to crystallize has been fully retained in the polymers prepared by iCVD. The degree of crystallinity and the preferred orientation of the perfluoro side chains, either parallel or perpendicular to the surface, were controlled by tuning the CVD process parameters (i.e. initiator to monomer flow rate ratio, filament temperature, and substrate temperature). Super- hydrophobicity (advancing water contact angle, WCA, of 160°, low hysteresis of 5°), and oleophobicity (advancing CA with mineral oil of 120°) were achieved. Low hysteresis was associated with high crystallinity, particularly when the orientation of the crystallites resulted in the perfluoro side groups being oriented parallel to the surface. The latter texture resulted in smoother film (RMS roughness < 30 nm) than the texture with the chains oriented perpendicularly to the surface. This can be very advantageous for applications that require smooth but still crystalline films. |
| first_indexed | 2024-09-23T16:56:02Z |
| format | Article |
| id | mit-1721.1/90578 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:56:02Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/905782022-09-29T22:30:01Z Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition Coclite, Anna Maria Shi, Yujun Gleason, Karen K. Massachusetts Institute of Technology. Department of Chemical Engineering Gleason, Karen K. Preferred crystallographic orientation (texture) in thin films frequently has a strong effect on the properties of the materials and it is important for stable surface properties. Organized molecular films of poly-perfluorodecylacrylate p(PFDA) were deposited by initiated Chemical Vapor Deposition (iCVD). The high tendency of p(PFDA) to crystallize has been fully retained in the polymers prepared by iCVD. The degree of crystallinity and the preferred orientation of the perfluoro side chains, either parallel or perpendicular to the surface, were controlled by tuning the CVD process parameters (i.e. initiator to monomer flow rate ratio, filament temperature, and substrate temperature). Super- hydrophobicity (advancing water contact angle, WCA, of 160°, low hysteresis of 5°), and oleophobicity (advancing CA with mineral oil of 120°) were achieved. Low hysteresis was associated with high crystallinity, particularly when the orientation of the crystallites resulted in the perfluoro side groups being oriented parallel to the surface. The latter texture resulted in smoother film (RMS roughness < 30 nm) than the texture with the chains oriented perpendicularly to the surface. This can be very advantageous for applications that require smooth but still crystalline films. Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies (Contract DAAD-19-02D-0002) 2014-10-07T16:39:50Z 2014-10-07T16:39:50Z 2013-07 Article http://purl.org/eprint/type/JournalArticle 18753892 http://hdl.handle.net/1721.1/90578 Coclite, Anna Maria, Yujun Shi, and Karen K. Gleason. “Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition.” Physics Procedia 46 (January 2013): 56–61. https://orcid.org/0000-0001-6127-1056 en_US http://dx.doi.org/10.1016/j.phpro.2013.07.045 Physics Procedia Creative Commons Attribution http://creativecommons.org/licenses/by-nc-nd/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Coclite, Anna Maria Shi, Yujun Gleason, Karen K. Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title | Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title_full | Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title_fullStr | Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title_full_unstemmed | Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title_short | Super-Hydrophobic and Oloephobic Crystalline Coatings by Initiated Chemical Vapor Deposition |
| title_sort | super hydrophobic and oloephobic crystalline coatings by initiated chemical vapor deposition |
| url | http://hdl.handle.net/1721.1/90578 https://orcid.org/0000-0001-6127-1056 |
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