Publications by authors named "Jana Jurmanova"

Antibacterial coatings on biomedical instruments are of great interest because they can suppress bacterial colonization on these instruments. In this study, antibacterial polymeric thin coatings were deposited on teflon substrates using atmospheric pressure plasma polymerization from a propane-butane mixture. The plasma polymerization was performed by means of surface dielectric barrier discharge burning in nitrogen at atmospheric pressure.

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Understanding underlying processes behind the simple and easily scalable graphene synthesis methods enables their large-scale deployment in the emerging energy storage and printable device applications. Microwave plasma decomposition of organic precursors forms a high-temperature environment, above 3000 K, where the process of catalyst-free dehydrogenation and consequent formation of Cmolecules leads to nucleation and growth of high-quality few-layer graphene (FLG). In this work, we show experimental evidence that a high-temperature environment with a gas mixture of Hand acetylene, CH, leads to a transition from amorphous to highly crystalline material proving the suggested dehydrogenation mechanism.

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Article Synopsis
  • Poly(2-oxazolines) (POx) are effective materials for biocompatible coatings in medical uses, but traditional plasma polymerization methods face challenges such as low pressure and poor surface chemistry control.
  • This study proposes using well-defined POx-based copolymers combined with polytetrafluoroethylene (PTFE) substrates, followed by a novel post-treatment with atmospheric pressure plasma to improve coating properties.
  • The resulting POx coatings show significantly improved hydrophilicity (water contact angle of 60°) and enhanced fibroblast adhesion compared to untreated PTFE, with stable physical and biological properties observed for 30 days.
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Polyoxazolines are a new promising class of polymers for biomedical applications. Antibiofouling polyoxazoline coatings can suppress bacterial colonization of medical devices, which can cause infections to patients. However, the creation of oxazoline-based films using conventional methods is difficult.

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Polymeric surfaces can benefit from functional modifications prior to using them for biological and/or technical applications. Surfaces considered for biocompatibility studies can be modified to gain beneficiary hydrophilic properties. For such modifications, the preparation of highly hydrophilic surfaces by means of plasma polymerization can be a good alternative to classical wet chemistry or plasma activation in simple atomic or molecular gasses.

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