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Synthesis and chara...
Synthesis and characterization of cellulose-silica composite fiber in ethanol/water mixed solvents
- Artikel/kapitelEngelska2011
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Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:uu-155604
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-155604URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
Anmärkningar
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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 och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Li, Shu-Ming
(författare)
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Ma, Ming-Guo
(författare)
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Zhu, Jie-FangUppsala universitet,Strukturkemi(Swepub:uu)zhuji179
(författare)
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Sun, Run-Cang
(författare)
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Uppsala universitetStrukturkemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:BioResources6:2, s. 1186-11951930-2126
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