Functionalized silica synthesized by sol-gel process
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/05/1999
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Resumo |
This work considers some aspects of the chemistry involved in the preparation and description of silicon oxide functionalized by sol-gel process. In this work we studied the synthesis and measured the properties of silicon oxide functionalized with 3-chloropropyl, through a sol-gel process. Thermogravimetic analysis, infrared spectra, and elemental analyses were measured. The samples were prepared in the following proportions of tetraethylorthosilicate (TEOS): 3-chloropropyl trimethoxisilane molar ratio: 1:0, 1:1, 2:1, 3:1 and 4:1. The thermogravimetric data for the resulting materials established the 'minimum formulae' 2:0, 3:1, 4.1, 7:1 and 11:1, respectively. As expected, the relative amount of water is inversely proportional to the presence of propyl groups. Infrared data show Si-C and -CH2-vibration modes at 1250 to 1280 and 2920 to 2940 cm(-1), respectively. Thermogravimetric data and infrared spectra showed that inorganic polymers contained organic polymers. (C) 1999 Elsevier B.V. B.V. All rights reserved. |
Formato |
124-128 |
Identificador |
http://dx.doi.org/10.1016/S0022-3093(99)00046-0 Journal of Non-crystalline Solids. Amsterdam: Elsevier B.V., v. 247, p. 124-128, 1999. 0022-3093 http://hdl.handle.net/11449/33837 10.1016/S0022-3093(99)00046-0 WOS:000080506900023 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Journal of Non-Crystalline Solids |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |