Wettability control of polymeric microstructures replicated from laser-patterned stamps
Abstract In this study, two-step approaches to fabricate periodic microstructures on polyethylene terephthalate (PET) and poly(methyl methacrylate) (PMMA) substrates are presented to control the wettability of polymeric surfaces. Micropillar arrays with periods between 1.6 and 4.6 µm are patterned b...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2020-12-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-020-79936-1 |
| _version_ | 1818432330312712192 |
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| author | Yangxi Fu Marcos Soldera Wei Wang Stephan Milles Kangfa Deng Bogdan Voisiat Kornelius Nielsch Andrés Fabián Lasagni |
| author_facet | Yangxi Fu Marcos Soldera Wei Wang Stephan Milles Kangfa Deng Bogdan Voisiat Kornelius Nielsch Andrés Fabián Lasagni |
| author_sort | Yangxi Fu |
| collection | DOAJ |
| description | Abstract In this study, two-step approaches to fabricate periodic microstructures on polyethylene terephthalate (PET) and poly(methyl methacrylate) (PMMA) substrates are presented to control the wettability of polymeric surfaces. Micropillar arrays with periods between 1.6 and 4.6 µm are patterned by plate-to-plate hot embossing using chromium stamps structured by four-beam Direct Laser Interference Patterning (DLIP). By varying the laser parameters, the shape, spatial period, and structure height of the laser-induced topography on Cr stamps are controlled. After that, the wettability properties, namely the static, advancing/receding contact angles (CAs), and contact angle hysteresis were characterized on the patterned PET and PMMA surfaces. The results indicate that the micropillar arrays induced a hydrophobic state in both polymers with CAs up to 140° in the case of PET, without modifying the surface chemistry. However, the structured surfaces show high adhesion to water, as the droplets stick to the surfaces and do not roll down even upon turning the substrates upside down. To investigate the wetting state on the structured polymers, theoretical CAs predicted by Wenzel and Cassie-Baxter models for selected structured samples with different topographical characteristics are also calculated and compared with the experimental data. |
| first_indexed | 2024-12-14T16:03:29Z |
| format | Article |
| id | doaj.art-89fed18ae7264c18a4edb89ee85554ce |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T16:03:29Z |
| publishDate | 2020-12-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-89fed18ae7264c18a4edb89ee85554ce2022-12-21T22:55:09ZengNature PortfolioScientific Reports2045-23222020-12-0110111110.1038/s41598-020-79936-1Wettability control of polymeric microstructures replicated from laser-patterned stampsYangxi Fu0Marcos Soldera1Wei Wang2Stephan Milles3Kangfa Deng4Bogdan Voisiat5Kornelius Nielsch6Andrés Fabián Lasagni7Institut Für Fertigungstechnik, Technische Universität DresdenInstitut Für Fertigungstechnik, Technische Universität DresdenInstitut Für Fertigungstechnik, Technische Universität DresdenInstitut Für Fertigungstechnik, Technische Universität DresdenInstitute for Metallic MaterialsInstitut Für Fertigungstechnik, Technische Universität DresdenInstitute for Metallic MaterialsInstitut Für Fertigungstechnik, Technische Universität DresdenAbstract In this study, two-step approaches to fabricate periodic microstructures on polyethylene terephthalate (PET) and poly(methyl methacrylate) (PMMA) substrates are presented to control the wettability of polymeric surfaces. Micropillar arrays with periods between 1.6 and 4.6 µm are patterned by plate-to-plate hot embossing using chromium stamps structured by four-beam Direct Laser Interference Patterning (DLIP). By varying the laser parameters, the shape, spatial period, and structure height of the laser-induced topography on Cr stamps are controlled. After that, the wettability properties, namely the static, advancing/receding contact angles (CAs), and contact angle hysteresis were characterized on the patterned PET and PMMA surfaces. The results indicate that the micropillar arrays induced a hydrophobic state in both polymers with CAs up to 140° in the case of PET, without modifying the surface chemistry. However, the structured surfaces show high adhesion to water, as the droplets stick to the surfaces and do not roll down even upon turning the substrates upside down. To investigate the wetting state on the structured polymers, theoretical CAs predicted by Wenzel and Cassie-Baxter models for selected structured samples with different topographical characteristics are also calculated and compared with the experimental data.https://doi.org/10.1038/s41598-020-79936-1 |
| spellingShingle | Yangxi Fu Marcos Soldera Wei Wang Stephan Milles Kangfa Deng Bogdan Voisiat Kornelius Nielsch Andrés Fabián Lasagni Wettability control of polymeric microstructures replicated from laser-patterned stamps Scientific Reports |
| title | Wettability control of polymeric microstructures replicated from laser-patterned stamps |
| title_full | Wettability control of polymeric microstructures replicated from laser-patterned stamps |
| title_fullStr | Wettability control of polymeric microstructures replicated from laser-patterned stamps |
| title_full_unstemmed | Wettability control of polymeric microstructures replicated from laser-patterned stamps |
| title_short | Wettability control of polymeric microstructures replicated from laser-patterned stamps |
| title_sort | wettability control of polymeric microstructures replicated from laser patterned stamps |
| url | https://doi.org/10.1038/s41598-020-79936-1 |
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