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Synthesis and chara...
Synthesis and characterization of cellulose-silica composite fiber in ethanol/water mixed solvents
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Jia, Ning (författare)
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Li, Shu-Ming (författare)
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Ma, Ming-Guo (författare)
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visa fler...
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- Zhu, Jie-Fang (författare)
- Uppsala universitet,Strukturkemi
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Sun, Run-Cang (författare)
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visa färre...
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(creator_code:org_t)
- 2011
- 2011
- Engelska.
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Ingår i: BioResources. - 1930-2126. ; 6:2, s. 1186-1195
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- Cellulose-silica composite fiber samples have been successfully synthesized using cellulose solution, tetraethoxysilane, and NH3 center dot H2O in ethanol/water mixed solvents at room temperature for 24 h. The cellulose solution was previously prepared by the dissolution of microcrystalline cellulose in a solvent mixture of N,N-dimethylacetamide (DMAc)/lithium chloride (LiCl). The effect of the tetraethoxysilane concentration on the product was investigated. The products were characterized by X-ray powder diffraction (XRD), thermogravimetric analysis (TG), differential scanning calorimetric analysis (DSC), scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), energy-dispersive X-ray spectrum (EDS), and cross polarization magic angle spinning (CP/MAS) solid state C-13-NMR. The morphology of the cellulose-silica composite fiber was investigated by SEM, while their composition was established from EDS measurements combined with the results of FT-IR spectral analysis and XRD patterns. The XRD, FT-IR and EDS results indicated that the obtained product was cellulose-silica composite fiber. The SEM micrographs showed that the silica particles were homogeneously dispersed in the cellulose fiber. The CP/MAS solid state C-13-NMR results indicated that the silica concentration had an influence on the crystallinity of the cellulose. This method is simple for preparation of cellulose-based composites.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Cellulose
- Silica
- Composite
- Fiber
- Microstructure
- NATURAL SCIENCES
- NATURVETENSKAP
- Inorganic chemistry
- Oorganisk kemi
- Kemi med inriktning mot oorganisk kemi
- Chemistry with specialization in Inorganic Chemistry
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- ref (ämneskategori)
- art (ämneskategori)
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