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Šrámková P, Zahoranová A, Kelar J, Kelar Tučeková Z, Stupavská M, Krumpolec R, Jurmanová J, Kováčik D, Černák M. Cold atmospheric pressure plasma: simple and efficient strategy for preparation of poly(2-oxazoline)-based coatings designed for biomedical applications. Sci Rep 2020; 10:9478. [PMID: 32528062 PMCID: PMC7289869 DOI: 10.1038/s41598-020-66423-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/18/2020] [Indexed: 02/08/2023] Open
Abstract
Poly(2-oxazolines) (POx) are an attractive material of choice for biocompatible and bioactive coatings in medical applications. To prepare POx coatings, the plasma polymerization represents a fast and facile approach that is surface-independent. However, unfavorable factors of this method such as using the low-pressure regimes and noble gases, or poor control over the resulting surface chemistry limit its utilization. Here, we propose to overcome these drawbacks by using well-defined POx-based copolymers prepared by living cationic polymerization as a starting material. Chemically inert polytetrafluoroethylene (PTFE) is selected as a substrate due to its beneficial features for medical applications. The deposited POx layer is additionally post-treated by non-equilibrium plasma generated at atmospheric pressure. For this purpose, diffuse coplanar surface barrier discharge (DCSBD) is used as a source of "cold" homogeneous plasma, as it is operating at atmospheric pressure even in ambient air. Prepared POx coatings possess hydrophilic nature with an achieved water contact angle of 60°, which is noticeably lower in comparison to the initial value of 106° for raw PTFE. Moreover, the increased fibroblasts adhesion in comparison to raw PTFE is achieved, and the physical and biological properties of the POx-modified surfaces remain stable for 30 days.
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Affiliation(s)
- Petra Šrámková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic.
| | - Anna Zahoranová
- Dapartment for Biomaterials Research, Polymer Institute, Slovak Academy of Sciences, Dubravska cesta 9, 845 41, Bratislava, Slovakia
| | - Jakub Kelar
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Zlata Kelar Tučeková
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Monika Stupavská
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Richard Krumpolec
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Jana Jurmanová
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Dušan Kováčik
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
| | - Mirko Černák
- Department of Physical Electronics, Faculty of Science, Masaryk University, Kotlarska 2, 611 37, Brno, Czech Republic
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