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2006 | 4 | 1 | 81-91
Article title

Silica hybrid nanocomposites

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EN
Abstracts
EN
In this work we present experimental results about the formation, properties and structure of sol - gel silica based biocomposite containing Calcium alginate as an organic compound. Two different types of silicon precursors have been used in the synthesis: tetramethylortosilicate (TMOS) and ethyltrimethoxysilane (ETMS). The samples have been prepared at room temperature. The hybrids have been synthesized by replacing different quantitis of the inorganic precursor with alginate. The structure of the obtained hybrid materials has been studied by XRD, IR Spectroscopy, EDS, BET and AFM. The results proved that all samples are amorphous possessing a surface area from 70 to 290 m2/g. It has also been established by FT IR spectra that the hybrids containing TMOS display Van der Walls and Hydrogen bonding or electrostatic interactions between the organic and inorganic components. Strong chemical bonds between the inorganic and organic components in the samples with ETMS are present. A self-organized nanostructure has been observed by AFM. In the obtained hybrids the nanobuilding blocks average in size at about 8–14 nm for the particles.
Publisher
Journal
Year
Volume
4
Issue
1
Pages
81-91
Physical description
Dates
published
1 - 3 - 2006
online
1 - 3 - 2006
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_1007_s11532-005-0006-9
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