The effect of polyhedral oligosilsesquioxanes (POSS) on cavitation resistance of hybrid acrylate films
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2020
Authors
Kalifa, MustafaTomić, Nataša Z.
Vuksanović, Marija M.
Stevanović, Sanja
Đokić, Veljko
Volkov-Husović, Tatjana
Pavlović, Vladimir B.
Jančić-Heinemann, Radmila
Marinković, Aleksandar D.
Article (Published version)
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Show full item recordAbstract
Cavitation erosion of hybrid acrylate composite films with polyhedral
oligosilsesquioxanes (POSS) was investigated in this study. The hybrid films are
made with 1, 3 and 5 wt% of POSS reagents containing: (a) hydroxyl (POSS-M),
(b) both hydroxyl and allyl (POSS-M-A) and (c) methacryloyl groups (POSS-MCl).
Addition of 5 wt% POSS-M-A caused the highest microhardness increase for
49.8%, in comparison to the pure matrix material. Cavitation resistance of hybrid
films, estimated as the time-dependent mass loss, was improved by POSS addition.
POSS-M-A addition (5 wt%) contributed to 94% lower mass loss comparing
to pure Bis-GMA/TEGDMA film. Scanning electron (SEM) and atomic force
microscopy (AFM) showed the lowest surface roughness obtained for composite
with POSS-M-A. The improved hardness and wear resistance of the composite
films indicated that POSS-M-A filler enhanced interfacial adhesion and reinforcing
of the Bis-GMA/TEGDMA matrix.
Keywords:
cavitation erosion / coatings / crosslinking / microscopy / surfacesSource:
Polymer Composites, 2020, 41, 8, 3403-3410Publisher:
- John Wiley and Sons Inc
Funding / projects:
- Predefined functional properties polymer composite materials processes and equipment development (RS-MESTD-Technological Development (TD or TR)-34011)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200135 (University of Belgrade, Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200135)
DOI: 10.1002/pc.25629
ISSN: 0272-8397; 1548-0569