Original title: Wettability enhancement of polymeric and glass micro fiber reinforcement by plasma treatment
Authors: Trejbal, J. ; Šmilauer, V. ; Kromka, Alexander ; Potocký, Štěpán ; Kopecký, L.
Document type: Papers
Conference/Event: NANOCON 2015. International Conference /7./, Brno (CZ), 20151014
Year: 2015
Language: eng
Abstract: Plasma treatments were used to modify surface properties of polyethylene terephthalate (PET) and glass micro fibers, to improve their wettability. PET fibers, having diameter of 400 μm, and glass fibers (14 μm) were exposed to low pressure oxygen plasma. A direct horizontal optical method was used for contact angle measurements on fiber surfaces submerged into distilled water. Surface morphology changes before and after treatment were characterized by scanning electron microscopy. Finally, cement paste specimens reinforced with PET and lime-based mortars reinforced with glass fibers were made and after 28 days of mixture curing tested by four-point bending tests. After oxygen plasma treatment contact angles decreased by 60 % on PET fibers and by 25 % on glass fibers in comparison with untreated fibers. Next, SEM images revealed the significant surface damages of PET fibers and minor damages of glass fibers. Both four-point tested samples reinforced with treated fibers exhibited the maximum bending strength loss about to 10 to 20 percent compared to samples with untreated reinforcement.
Keywords: contact angle; cool oxygen plasma; micro fibers; plasma treatments; wettability
Host item entry: NANOCON 2015: 7th International Conference on Nanomaterials - Research and Application, Conference Proceedings, ISBN 978-80-87294-63-5

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0281135

Permalink: http://www.nusl.cz/ntk/nusl-371569

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Research > Institutes ASCR > Institute of Physics
Conference materials > Papers
 Record created 2018-03-07, last modified 2020-03-27

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