Please use this identifier to cite or link to this item:
Publisher DOI: 10.1590/S0103-50532010001200010
Title: Surface modification of alumina nanoparticles with silane coupling agents
Language: English
Authors: Prado, Luís Antônio Sanchez de Almeida 
Sriyai, Montira 
Ghislandi, Marcos 
Barros-Timmons, Ana 
Schulte, Karl 
Keywords: alumina;surface functionalization;structure-properties relationship;thermal stability
Issue Date: 2-Sep-2010
Publisher: Sociedade Brasileira de Química, SBQ
Source: Journal of the Brazilian Chemical Society 12 (21): 2238-2245 (2010-01-01)
Journal or Series Name: Journal of the Brazilian Chemical Society 
Abstract (english): 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.
DOI: 10.15480/882.1923
ISSN: 1678-4790
Institute: Kunststoffe und Verbundwerkstoffe M-11 
Type: (wissenschaftlicher) Artikel
License: CC BY-NC 4.0 (Attribution-NonCommercial) CC BY-NC 4.0 (Attribution-NonCommercial)
Appears in Collections:Publications with fulltext

Files in This Item:
File Description SizeFormat
a10v2112.pdfVerlags-PDF934,22 kBAdobe PDFThumbnail
Show full item record

Page view(s)

Last Week
Last month
checked on Sep 29, 2020


checked on Sep 29, 2020

Google ScholarTM


Note about this record


This item is licensed under a Creative Commons License Creative Commons