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| Registros recuperados : 13 | |
| 5. |  | KUMODE, M. M. N.; MAGALHAES, W. L. E.; SATYANARAYANA, K. G.; LENGOWSKI, E. C. Avaliação das propriedades físico-mecânicas de nanocompósitos de torta de mamona e glicerol reforçados com nanocelulose. In: WORKSHOP DA REDE DE NANOTECNOLOGIA APLICADA AO AGRONEGÓCIO, 7.; ESCOLA DE NANOTECNOLOGIA, 3., 2013, São Carlos, SP. Anais. São Carlos, SP: Embrapa Instrumentação, 2013. CD-ROM. p. 241-243.| Biblioteca(s): Embrapa Florestas. |
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| 9. | | LENGOWSKI, E. C.; NISGOSKI, S.; TANOBE, V.; BOLZON DE MUÑIZ, G. I.; MAGALHAES, W. L. E.; SATYANARAYANA, K. G. Development of highly filled phenolic resin-endocarp particles of coconut (Cocos nucifera) composites. In: CONGRESO LATINOAMERICANO DE IUFRO, 3., 2013, San José. Bosques, competitividad y territorios sostenibles. San José: CATIE; [S.l.]: IUFRO, 2013. 1 p. IUFROLAT 2013. Disponibilizado online. Resumen.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | LENGOWSKI, E. C.; NISGOSKI, S.; OLIVEIRA, V. T. de; BOLZÓN DE MUÑIZ, G. I.; MAGALHAES, W. L. E.; SATYANARAYANA, K. G. Development of composites of highly filled phenol formaldehyde resin: coconut (Cocos nucifera) endocarp particles. International Polymer Processing, v. 29, n. 4, p. 477-488, 2014.| Biblioteca(s): Embrapa Florestas. |
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| 12. | | BOLZON DE MUÑIZ, G. I.; LENGOWSKI, E. C.; NISGOSKI, S.; MAGALHÃES, W. L. E.; OLIVEIRA, V. T. de; HANSEL, F. A. Characterization of Pinus spp needles and evaluation of their potential use for energy. Cerne, Lavras, v. 20, n. 2, p. 245-250, abr./jun. 2014.| Biblioteca(s): Embrapa Florestas. |
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| 13. | | MAGALHAES, W. L. E.; CADEMARTORI, P. H. G. de; BOLZON DE MUNIZ, G. I.; CARNEIRO, M. E.; LENGOWSKI, E. C.; MATTOS, B. D.; LOURENÇON, T. V.; VIANA, L. C.; KUMODE, M. M. N. Nanotechnology applied to forest sector: some researches at Embrapa Forestry. In: CANADA - BRAZIL WORKSHOP ON SUSTAINABLE NANOMATERIALS, 3., 2014, Belo Horizonte. General program. [S.l.]: Ministério da Ciência e Tecnologia, 2014. p. 14. Abstract.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 13 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
01/07/2016 |
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Data da última atualização: |
01/07/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
LENGOWSKI, E. C.; MAGALHAES, W. L. E.; NISGOSKI, S.; BOLZON DE MUNIZ, G. I.; SATYANARAYANA, K. G.; LAZZAROTTO, M. |
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Afiliação: |
Elaine Cristina Lengowski, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Silvana Nisgoski, UFPR; Graciela Inês Bolzon de Muniz, UFPR; Kestur Gundappa Satyanarayana, Pesquisador visitante na Embrapa Florestas; MARCELO LAZZAROTTO, CNPF. |
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Título: |
New and improved method of investigation using thermal tools forcharacterization of cellulose from eucalypts pulp. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Thermochimica Acta, v. 638, p. 44-51, Aug. 2016. |
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DOI: |
http://dx.doi.org/10.1016/j.tca.2016.06.010 |
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Idioma: |
Inglês |
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Conteúdo: |
Despite cellulose being the most abundant biopolymer on earth and an important commodity, thereis a lack of deeper knowledge about its structure as well as faster and more efficient characterizationtechniques. This paper presents preparation of nanocellulose from bleached cellulose pulp of Eucalyptusby chemical and mechanical pre-treatments, while the cellulose was given treatment to obtain a greatrange of crystallinity index. The nanocellulose is characterized by X-ray diffraction to evaluate Segal?sindex while chemometric tools by TGA and DTA were used to predict Segal?s index. DTA curves, alongwith multivariate statistical model, presented better result than TGA. The coefficient of variation andstandard error of prediction for the proposed models using external validation samples were in therange of 0.91?0.96 and 4.18?8.71, respectively. These successful mathematical models are discussed bycorrelating them with the observed characteristics of cellulose. |
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Palavras-Chave: |
Chemometric analysis; Difração de raio X; Nanocellulose; Nanocelulose; Nanotecnologia; Segal's index; Validation. |
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Thesagro: |
Celulose; Eucalipto; Polpa. |
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Thesaurus NAL: |
Cellulose; Cellulosic materials; Eucalyptus; Nanotechnology; Pulp; Thermal analysis; X-ray diffraction. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
LEADER 02122naa a2200397 a 4500
001 2048124
005 2016-07-01
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.tca.2016.06.010$2DOI
100 1 $aLENGOWSKI, E. C.
245 $aNew and improved method of investigation using thermal tools forcharacterization of cellulose from eucalypts pulp.$h[electronic resource]
260 $c2016
520 $aDespite cellulose being the most abundant biopolymer on earth and an important commodity, thereis a lack of deeper knowledge about its structure as well as faster and more efficient characterizationtechniques. This paper presents preparation of nanocellulose from bleached cellulose pulp of Eucalyptusby chemical and mechanical pre-treatments, while the cellulose was given treatment to obtain a greatrange of crystallinity index. The nanocellulose is characterized by X-ray diffraction to evaluate Segal?sindex while chemometric tools by TGA and DTA were used to predict Segal?s index. DTA curves, alongwith multivariate statistical model, presented better result than TGA. The coefficient of variation andstandard error of prediction for the proposed models using external validation samples were in therange of 0.91?0.96 and 4.18?8.71, respectively. These successful mathematical models are discussed bycorrelating them with the observed characteristics of cellulose.
650 $aCellulose
650 $aCellulosic materials
650 $aEucalyptus
650 $aNanotechnology
650 $aPulp
650 $aThermal analysis
650 $aX-ray diffraction
650 $aCelulose
650 $aEucalipto
650 $aPolpa
653 $aChemometric analysis
653 $aDifração de raio X
653 $aNanocellulose
653 $aNanocelulose
653 $aNanotecnologia
653 $aSegal's index
653 $aValidation
700 1 $aMAGALHAES, W. L. E.
700 1 $aNISGOSKI, S.
700 1 $aBOLZON DE MUNIZ, G. I.
700 1 $aSATYANARAYANA, K. G.
700 1 $aLAZZAROTTO, M.
773 $tThermochimica Acta$gv. 638, p. 44-51, Aug. 2016.
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