Microstructure and Optical Properties of PMMA Matrix Composites Containing LaB₆ Nanoparticles
he lanthanum hexaboride (LaB₆) nanoparticles are synthesized via a solid state reaction in vacuum. Silane coupling agent is used for modifying the surface of the nanoparticles. This process is carried out in different solutions so as to ascertain the best modification technology. Modified LaB₆ na...
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| Datum: | 2013 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Інститут металофізики ім. Г.В. Курдюмова НАН України
2013
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| Schriftenreihe: | Металлофизика и новейшие технологии |
| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/104115 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Microstructure and Optical Properties of PMMA Matrix Composites Containing LaB₆ Nanoparticles / L. Hu, L. Zhang, Y. Yuan, G. Min // Металлофизика и новейшие технологии. — 2013. — Т. 35, № 5. — С. 623-632. — Бібліогр.: 18 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | he lanthanum hexaboride (LaB₆) nanoparticles are synthesized via a solid
state reaction in vacuum. Silane coupling agent is used for modifying the
surface of the nanoparticles. This process is carried out in different solutions
so as to ascertain the best modification technology. Modified LaB₆ nanoparticles
are added to polymethyl methacrylate (PMMA) matrix by in-situ polymerization.
Synthesized nanoparticles are characterized by XRD and TEM, the
results show that the obtained particles have high degree of crystallinity and
elliptical or cubic shape, the size ranged from 20 nm to 100 nm. In addition,
FESEM and Medium infra-red spectrometers are used to prove the effect of
surface modification of nanoparticles, alcohol solution can provide the best
modification atmosphere for the modifying process, as LaB₆ nanoparticles
modified in alcohol solution appear in uniformly elliptic shape and smallest
size. Furthermore, the microstructure of PMMA/LaB₆ composites are characterized,
and optical properties of the composites are tested by UV-vis-NIR
spectrophotometry. Experimental results show that modified LaB₆ nanoparticles
dispersed well in the PMMA matrix, the relationship between added
LaB₆ nanoparticles and optical properties of PMMA matrix is demonstrated
as well. PMMA matrix contained 0.02% wt. LaB₆ nanoparticles can block
NIR effectively with slight influence on the high transparency of PMMA matrix. |
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