| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
17/11/2020 |
|
Data da última atualização: |
17/11/2020 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
LOUREÇON, T. V.; MAGALHAES, W. L. E.; BOLZON de MUNIZ, G. I.; VIRTANEN, T.; JÄÄSKELÄINEN, A.-S.; LIITIA, T.; ALAKURTTI, S.; HUGHES, M.; TAMMINEN, T. |
|
Afiliação: |
Tainise V. Lourençon, Aalto University; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Graciela Inês Bolzòn de Muñiz, UFPR; T. VIRTANEN, VTT TechnicaL Research Centre of Finland; A.-S. JÄÄSKELÄINEN, VTT TechnicaL Research Centre of Finland; T. LIITIA, VTT TechnicaL Research Centre of Finland; S. ALAKURTTI, VTT TechnicaL Research Centre of Finland; M. HUGHES, Aalto University; T. TAMMINEN, VTT TechnicaL Research Centre of Finland. |
|
Título: |
Hardwood kraft lignin fractions as phenol substitute in phenol-form aldehyde resins. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
In: EUROPEAN WORKSHOP ON LIGNOCELLLULOSICS AND PULP, 15., 2018, Aveiro. Proceedings for posters presentations. [S.l.: s.n.], 2018. p. 399-402. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The subs titution of phenol by lignin in phenol-formaldehyde (PF) resins is one of most promis ing end uses for lignin valorization. lignin from grasses and softwood has been the focus of the studies in this field as they present higher number of theoretical reactive sites for the resin synthesis. Hpeerrfeoinrm waen ecexa imn iPnFe rtehsei ncso,m sypnotshiteisoinze adn dby c hseumbsitciatul rteinagc tpivhietyn oolf ihna 5rd0w woto%d. lTighnei nr efrsauclttiso onfs ,t hanisd s tthuediyr give a clear demonstration that the lower frequency of reactive sites present in hardwood lignin did not influence negatively on the resin synthesis, bringing new perspectives to this technical lignin. |
|
Palavras-Chave: |
Kraft; Phenolic resins; Reactive sites; Resina fenólica; Technical lignin. |
|
Thesagro: |
Lignina. |
|
Thesaurus Nal: |
Fractionation. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01614nam a2200289 a 4500
001 2126680
005 2020-11-17
008 2018 bl uuuu u00u1 u #d
100 1 $aLOUREÇON, T. V.
245 $aHardwood kraft lignin fractions as phenol substitute in phenol-form aldehyde resins.$h[electronic resource]
260 $aIn: EUROPEAN WORKSHOP ON LIGNOCELLLULOSICS AND PULP, 15., 2018, Aveiro. Proceedings for posters presentations. [S.l.: s.n.], 2018. p. 399-402.$c2018
520 $aThe subs titution of phenol by lignin in phenol-formaldehyde (PF) resins is one of most promis ing end uses for lignin valorization. lignin from grasses and softwood has been the focus of the studies in this field as they present higher number of theoretical reactive sites for the resin synthesis. Hpeerrfeoinrm waen ecexa imn iPnFe rtehsei ncso,m sypnotshiteisoinze adn dby c hseumbsitciatul rteinagc tpivhietyn oolf ihna 5rd0w woto%d. lTighnei nr efrsauclttiso onfs ,t hanisd s tthuediyr give a clear demonstration that the lower frequency of reactive sites present in hardwood lignin did not influence negatively on the resin synthesis, bringing new perspectives to this technical lignin.
650 $aFractionation
650 $aLignina
653 $aKraft
653 $aPhenolic resins
653 $aReactive sites
653 $aResina fenólica
653 $aTechnical lignin
700 1 $aMAGALHAES, W. L. E.
700 1 $aBOLZON de MUNIZ, G. I.
700 1 $aVIRTANEN, T.
700 1 $aJÄÄSKELÄINEN, A.-S.
700 1 $aLIITIA, T.
700 1 $aALAKURTTI, S.
700 1 $aHUGHES, M.
700 1 $aTAMMINEN, T.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
18/02/2016 |
|
Data da última atualização: |
03/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
SOUZA, N. L. G. D.; SALLES, T. F.; BRANDAO, H. de M.; EDWARDS, H. G. M.; OLIVEIRA, L. F. C. de. |
|
Afiliação: |
Nelson L. G. D. Souza, UFJF; Tamyres F. Salles, UFJF; HUMBERTO DE MELLO BRANDAO, CNPGL; Howell G. M. Edwards, University of Bradford; Luiz F. C. de Oliveira, UFJF. |
|
Título: |
Synthesis, Vibrational Spectroscopic and Thermal Properties of Oxocarbon Cross?Linked Chitosan. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Journal of the Brazilian Chemical Society, v. 26, n. 6, p. 1247-1256, 2015. |
|
Idioma: |
Inglês |
|
Conteúdo: |
In this work specimens of chitosan which have been cross-linked covalently and ionically with different oxocarbon and pseudo-oxocarbon anions have been synthesised and characterized using infrared and Raman spectroscopic techniques, solid state 13C nuclear magnetic resonance (NMR) and by thermogravimetry. According to the spectroscopic and thermal results, ionically crosslinked chitosans are obtained with squarate, croconate and rhodizonate ions as crosslinking agents, whereas covalently crosslinked chitosan can be obtained when squaric acid is used as the crosslinking agent; the same products are not observed when the pseudo-oxocarbon anion croconate violet is used, which can be attributed to the low basic strength of the crosslinking species. |
|
Palavras-Chave: |
Infrared and Raman; Oxocarbon; Solid state 13C NMR. |
|
Thesaurus NAL: |
chitosan; crosslinking. |
|
Categoria do assunto: |
W Química e Física |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/139397/1/Cnpgl-2015-JBrasChemSoc-Synthesis.pdf
|
|
Marc: |
LEADER 01463naa a2200229 a 4500
001 2037647
005 2024-02-03
008 2015 bl uuuu u00u1 u #d
100 1 $aSOUZA, N. L. G. D.
245 $aSynthesis, Vibrational Spectroscopic and Thermal Properties of Oxocarbon Cross?Linked Chitosan.$h[electronic resource]
260 $c2015
520 $aIn this work specimens of chitosan which have been cross-linked covalently and ionically with different oxocarbon and pseudo-oxocarbon anions have been synthesised and characterized using infrared and Raman spectroscopic techniques, solid state 13C nuclear magnetic resonance (NMR) and by thermogravimetry. According to the spectroscopic and thermal results, ionically crosslinked chitosans are obtained with squarate, croconate and rhodizonate ions as crosslinking agents, whereas covalently crosslinked chitosan can be obtained when squaric acid is used as the crosslinking agent; the same products are not observed when the pseudo-oxocarbon anion croconate violet is used, which can be attributed to the low basic strength of the crosslinking species.
650 $achitosan
650 $acrosslinking
653 $aInfrared and Raman
653 $aOxocarbon
653 $aSolid state 13C NMR
700 1 $aSALLES, T. F.
700 1 $aBRANDAO, H. de M.
700 1 $aEDWARDS, H. G. M.
700 1 $aOLIVEIRA, L. F. C. de
773 $tJournal of the Brazilian Chemical Society$gv. 26, n. 6, p. 1247-1256, 2015.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
