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...

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Autores principales:	Yangxi Fu, Marcos Soldera, Wei Wang, Stephan Milles, Kangfa Deng, Bogdan Voisiat, Kornelius Nielsch, Andrés Fabián Lasagni
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/89fed18ae7264c18a4edb89ee85554ce
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spelling	oai:doaj.org-article:89fed18ae7264c18a4edb89ee85554ce2021-12-02T14:01:28ZWettability control of polymeric microstructures replicated from laser-patterned stamps10.1038/s41598-020-79936-12045-2322https://doaj.org/article/89fed18ae7264c18a4edb89ee85554ce2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79936-1https://doaj.org/toc/2045-2322Abstract 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.Yangxi FuMarcos SolderaWei WangStephan MillesKangfa DengBogdan VoisiatKornelius NielschAndrés Fabián LasagniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-11 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q 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
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.
format	article
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
title	Wettability control of polymeric microstructures replicated from laser-patterned stamps
title_short	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_sort	wettability control of polymeric microstructures replicated from laser-patterned stamps
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/89fed18ae7264c18a4edb89ee85554ce
work_keys_str_mv	AT yangxifu wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT marcossoldera wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT weiwang wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT stephanmilles wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT kangfadeng wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT bogdanvoisiat wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT korneliusnielsch wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps AT andresfabianlasagni wettabilitycontrolofpolymericmicrostructuresreplicatedfromlaserpatternedstamps
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Wettability control of polymeric microstructures replicated from laser-patterned stamps

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