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Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates

The processes of the deposition of carbon coatings on PDMS (polydimethylsiloxane) substrates using plasma techniques are widely used in a large number of studies, in applications ranging from electronic to biological. That is why the potential improvement of their functional properties, including tr...

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Autores principales: Kaczorowski, Witold, Świątek, Hanna, Łuczak, Klaudia, Głuszek, Marta, Cłapa, Marian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7830654/
https://www.ncbi.nlm.nih.gov/pubmed/33477291
http://dx.doi.org/10.3390/ma14020433
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author Kaczorowski, Witold
Świątek, Hanna
Łuczak, Klaudia
Głuszek, Marta
Cłapa, Marian
author_facet Kaczorowski, Witold
Świątek, Hanna
Łuczak, Klaudia
Głuszek, Marta
Cłapa, Marian
author_sort Kaczorowski, Witold
collection PubMed
description The processes of the deposition of carbon coatings on PDMS (polydimethylsiloxane) substrates using plasma techniques are widely used in a large number of studies, in applications ranging from electronic to biological. That is why the potential improvement of their functional properties, including tribological properties, seems very interesting. This paper presents an analysis of the impact of plasma pre-treatment on the properties of the produced diamond-like carbon (DLC) coatings, including changes in the coefficients of friction and wear rates. The initial modification processes were performed using two different techniques based on low-pressure plasma (RF PACVD, radio-frequency plasma-assisted chemical vapour deposition) and dielectric barrier discharge (DBD) plasma. The effects of the above-mentioned treatments on the geometric structure of the PDMS surface and its water contact angles and stability over time were determined. The basic properties of the DLC coatings produced on unmodified substrates were compared to those of the coatings subjected to plasma pre-treatment. The most interesting effects in terms of tribological properties were achieved after the DBD process and production of DLC coatings, achieving a decrease in wear rates to 2.45 × 10(−8) mm(3)/Nm. The tests demonstrate that the cross-linking of the polymer substrate occurs during plasma pre-treatment.
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spelling pubmed-78306542021-01-26 Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates Kaczorowski, Witold Świątek, Hanna Łuczak, Klaudia Głuszek, Marta Cłapa, Marian Materials (Basel) Article The processes of the deposition of carbon coatings on PDMS (polydimethylsiloxane) substrates using plasma techniques are widely used in a large number of studies, in applications ranging from electronic to biological. That is why the potential improvement of their functional properties, including tribological properties, seems very interesting. This paper presents an analysis of the impact of plasma pre-treatment on the properties of the produced diamond-like carbon (DLC) coatings, including changes in the coefficients of friction and wear rates. The initial modification processes were performed using two different techniques based on low-pressure plasma (RF PACVD, radio-frequency plasma-assisted chemical vapour deposition) and dielectric barrier discharge (DBD) plasma. The effects of the above-mentioned treatments on the geometric structure of the PDMS surface and its water contact angles and stability over time were determined. The basic properties of the DLC coatings produced on unmodified substrates were compared to those of the coatings subjected to plasma pre-treatment. The most interesting effects in terms of tribological properties were achieved after the DBD process and production of DLC coatings, achieving a decrease in wear rates to 2.45 × 10(−8) mm(3)/Nm. The tests demonstrate that the cross-linking of the polymer substrate occurs during plasma pre-treatment. MDPI 2021-01-17 /pmc/articles/PMC7830654/ /pubmed/33477291 http://dx.doi.org/10.3390/ma14020433 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kaczorowski, Witold
Świątek, Hanna
Łuczak, Klaudia
Głuszek, Marta
Cłapa, Marian
Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title_full Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title_fullStr Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title_full_unstemmed Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title_short Impact of Plasma Pre-Treatment on the Tribological Properties of DLC Coatings on PDMS Substrates
title_sort impact of plasma pre-treatment on the tribological properties of dlc coatings on pdms substrates
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7830654/
https://www.ncbi.nlm.nih.gov/pubmed/33477291
http://dx.doi.org/10.3390/ma14020433
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