Increased adhesion of polydimethylsiloxane (PDMS) to acrylic adhesive tape for medical use by surface treatment with an atmospheric pressure rotating plasma jet

The surface properties of polydimethylsiloxane (PDMS) were modified by treatment with an atmospheric pressure rotating plasma jet (APPJ) and the surface modifications were studied to assess its hydrophilicity and adhesion to acrylic adhesive tape intended for medical applications. Furthermore, the e...

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Bibliographic Details
Published in:Journal of physics. D, Applied physics Applied physics, 2016-08, Vol.49 (33), p.334001-334010
Main Authors: Jofre-Reche, José Antonio, Pulpytel, Jérôme, Arefi-Khonsari, Farzaneh, Martín-Martínez, José Miguel
Format: Article
Language:English
Subjects:
Adhesion tests
Adhesive strength
adhesive tape for medical use
Atmospheric pressure
atmospheric pressure rotating plasma jet
Barometric pressure
Chemical Sciences
Hydrophilicity
hydrophobic recovery
Other
polydimethylsiloxane
Recovery
Silicone resins
Surface treatment
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Summary:The surface properties of polydimethylsiloxane (PDMS) were modified by treatment with an atmospheric pressure rotating plasma jet (APPJ) and the surface modifications were studied to assess its hydrophilicity and adhesion to acrylic adhesive tape intended for medical applications. Furthermore, the extent of hydrophobic recovery under different storage conditions was studied. The surface treatment of PDMS with the APPJ under optimal conditions noticeably increased the oxygen content and most of the surface silicon species were fully oxidized. A brittle silica-like layer on the outermost surface was created showing changes in topography due to the formation of grooves and cracks. A huge improvement in T-peel and the shear adhesive strength of the APPJ-treated PDMS surface/acrylic tape joints was obtained. On the other hand, the hydrophilicity of the PDMS surface increased noticeably after the APPJ treatment, but 24 h after treatment almost 80% hydrophobicity was recovered and the adhesive strength was markedly reduced with time after the APPJ treatment. However, the application of an acrylic adhesive layer on the just-APPJ-treated PDMS surface retained the adhesive strength, limiting the extent of hydrophobic recovery.
ISSN:0022-3727
1361-6463
DOI:10.1088/0022-3727/49/33/334001