Optimization of modifier deposition on the alumina surface to enhance mechanical properties and cavitation resistance
Composites based on poly(methyl methacrylate), dimethyl itaconate matrix and alumina particles were prepared. Ferrous oxide-doped alumina particles (Al 2 O 3 Fe) and commercial alumina nanoparticles (Al 2 O 3 n) modified with (3-aminopropyl)trimethoxysilane (AM) and methyl esters of linseed oil fatt...
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Published in | Polymer bulletin (Berlin, Germany) Vol. 77; no. 7; pp. 3603 - 3620 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Berlin/Heidelberg
Springer Berlin Heidelberg
01.07.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Composites based on poly(methyl methacrylate), dimethyl itaconate matrix and alumina particles were prepared. Ferrous oxide-doped alumina particles (Al
2
O
3
Fe) and commercial alumina nanoparticles (Al
2
O
3
n) modified with (3-aminopropyl)trimethoxysilane (AM) and methyl esters of linseed oil fatty acids (biodiesel—BD) were used as reinforcement. The mechanical properties of the prepared composites, containing 1, 3 and 5 wt% of surface-modified alumina particles, are compared to a neat polymer matrix. The particles were characterized by single-beam Fourier transform infrared spectroscopy, thermogravimetry and differential scanning calorimetry. The mechanical properties of the composites were determined by micro-Vickers hardness and impact testing. The morphology of the surface of the composites exposed to cavitation was observed through a field emission scanning electron microscope. AFM analysis was used to compare surface features seen using the SEM and to interpret the surface degradation properties. The hardness, cavitation resistance and high-impact energy resistance of the composites are better in the case of AM surface modification of alumina fillers, but biodiesel modified particles have comparable mechanical properties and a stabilized Al–O–Si bond that could be important when a composite is exposed to humidity or a wet environment. |
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ISSN: | 0170-0839 1436-2449 |
DOI: | 10.1007/s00289-019-02923-8 |