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Registro Completo |
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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
10/09/2014 |
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Data da última atualização: |
10/09/2014 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
SOUZA, V. C.; QUADRI, M. G. N.; ZOLDAN, S. R. |
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Título: |
Extraction of nanocrystalline cellulose from corn cobs, an agro-industrial waste. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE POLÍMEROS, 12., 2013, Florianópolis, SC. Anais... Florianópolis, SC: UFSC, 2013. p. 1-4. |
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Idioma: |
Português |
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Conteúdo: |
Abstract ? Corn cobs, na agro-industrial waste of the maize industry, was used as starting material to prepare nanocrystalline cellulose. The method of sulphiric acid hydrolysis accompanied with ultrasonication was used to prepare nanocrystalline cellulose. The chemical composition of corn cobs was determined at different stages of treatment. Transmission electron microscopy (TEM) was studied to investigate the morphology of the isolated nanocrystalline cellulose. The results indicated that the hemicellulose and lignin were removed extensively from the extrscted cellulose. TEM images showed spherical or elliptic granules of nanocrystalline cellulose with diameters ranged from 5 to 25 nm length from 5 to 30 nm, giving an aspect ratio of 0.8 to 1.6. |
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Palavras-Chave: |
Cellulose; maize; morphology; nanowhisker; purification. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01398naa a2200205 a 4500
001 1121603
005 2014-09-10
008 2013 bl uuuu u00u1 u #d
100 1 $aSOUZA, V. C.
245 $aExtraction of nanocrystalline cellulose from corn cobs, an agro-industrial waste.$h[electronic resource]
260 $c2013
520 $aAbstract ? Corn cobs, na agro-industrial waste of the maize industry, was used as starting material to prepare nanocrystalline cellulose. The method of sulphiric acid hydrolysis accompanied with ultrasonication was used to prepare nanocrystalline cellulose. The chemical composition of corn cobs was determined at different stages of treatment. Transmission electron microscopy (TEM) was studied to investigate the morphology of the isolated nanocrystalline cellulose. The results indicated that the hemicellulose and lignin were removed extensively from the extrscted cellulose. TEM images showed spherical or elliptic granules of nanocrystalline cellulose with diameters ranged from 5 to 25 nm length from 5 to 30 nm, giving an aspect ratio of 0.8 to 1.6.
653 $aCellulose
653 $amaize
653 $amorphology
653 $ananowhisker
653 $apurification
700 1 $aQUADRI, M. G. N.
700 1 $aZOLDAN, S. R.
773 $tIn: CONGRESSO BRASILEIRO DE POLÍMEROS, 12., 2013, Florianópolis, SC. Anais... Florianópolis, SC: UFSC, 2013. p. 1-4.
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Epagri-Sede (Epagri-Sede) |
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| 4. |  | SOUZA, V. C.; QUADRI, M. G. N.; ZOLDAN, S. R. Extraction of nanocrystalline cellulose from corn cobs, an agro-industrial waste. In: CONGRESSO BRASILEIRO DE POLÍMEROS, 12., 2013, Florianópolis, SC. Anais... Florianópolis, SC: UFSC, 2013. p. 1-4.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
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| Registros recuperados : 4 | |
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