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Wettability enhancement of polymeric and glass micro fiber reinforcement by plasma treatment
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SYSNO ASEP 0486261 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Wettability enhancement of polymeric and glass micro fiber reinforcement by plasma treatment Author(s) Trejbal, J. (CZ)
Šmilauer, V. (CZ)
Kromka, Alexander (FZU-D) RID, ORCID, SAI
Potocký, Štěpán (FZU-D) RID, ORCID
Kopecký, L. (CZ)Number of authors 5 Source Title NANOCON 2015: 7th International Conference on Nanomaterials - Research and Application, Conference Proceedings. - Ostrava : TANGER, spol. s r.o., 2015 - ISBN 978-80-87294-63-5 Pages s. 315-320 Number of pages 6 s. Publication form Online - E Action NANOCON 2015. International Conference /7./ Event date 14.10.2015 - 16.10.2015 VEvent location Brno Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords plasma treatments ; cool oxygen plasma ; wettability ; contact angle ; micro fibers Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) Institutional support FZU-D - RVO:68378271 UT WOS 000374708800055 EID SCOPUS 84962795016 Annotation 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. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2018
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