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  4. Surface modification of alumina nanoparticles with silane coupling agents
 
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Surface modification of alumina nanoparticles with silane coupling agents

Citation Link: https://doi.org/10.15480/882.1923
Publikationstyp
Journal Article
Date Issued
2010-09-02
Sprache
English
Author(s)
Prado, Luís Antônio Sanchez de Almeida  
Sriyai, Montira  
Ghislandi, Marcos  
Barros-Timmons, Ana  
Schulte, Karl  
Institut
Kunststoffe und Verbundwerkstoffe M-11  
TORE-DOI
10.15480/882.1923
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1926
Journal
Journal of the Brazilian Chemical Society  
Volume
21
Issue
12
Start Page
2238
End Page
2245
Citation
Journal of the Brazilian Chemical Society 12 (21): 2238-2245 (2010-01-01)
Publisher DOI
10.1590/S0103-50532010001200010
Scopus ID
2-s2.0-78649560747
Publisher
Sociedade Brasileira de Química, SBQ
In the present paper we describe the surface modification of alumina nanoparticles using epoxy-containing alkoxysilanes (silane coupling agents, SCA). The materials were characterized using infrared spectroscopy and solid-state nuclear magnetic resonance. Whereas, neat alumina nanoparticles could be expectedly modified with the afore mentioned SCA, as evidenced by 13C CPMAS NMR, the presence of arylsulphonates at the surface of alumina caused the ringopening polymerization of the epoxide. This polymerization reaction facilitated the surface modification of alumina by the SCA. X-ray powder diffraction and 27Al MAS NMR clearly demonstrated that in spite of the SCA polymerization, there were neither structural changes nor phase transitions in the alumina after the surface modification. The surface modification decreased the thermal stability of alumina, in comparison to pristine alumina nanoparticles. © 2010 Sociedade Brasileira de Química.
Subjects
alumina
surface functionalization
structure-properties relationship
thermal stability
DDC Class
540: Chemie
Lizenz
https://creativecommons.org/licenses/by-nc/4.0/
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