| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Soja. |
|
Data corrente: |
14/05/2020 |
|
Data da última atualização: |
17/12/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
SÓSA-GOMEZ, D. R.; MORGADO, F. S.; CORRÊA, R. F. T.; SILVA, L. A.; ARDISSON-ARAÚJO, D. M. P.; RODRIGUES, B. M. P.; OLIVEIRA, E. E.; AGUIAR, R. W. S.; RIBEIRO, B. M. |
|
Afiliação: |
DANIEL RICARDO SOSA GOMEZ, CNPSO; UnB, Brasília, DF; Universidade Federal de Tocantins, Gurupi, TO.; UnB, Brasília, DF.; UFSM, Santa Maria, RS; UnB, Brasília, DF; UFV, Viçosa, MG; Universidade Federal de Tocantins, Gurupi, TO; UnB, Brasília, DF. |
|
Título: |
Entomopathogenic Viruses in the Neotropics: Current Statusand Recently Discovered Species |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Neotropical Entomology, v. 49, n. 3, p. 315-331, mai. 2020. |
|
DOI: |
10.1007/s13744-020-00770-1 |
|
Idioma: |
Inglês |
|
Thesagro: |
Baculovirus; Controle Biológico; DNA; Inseto; RNA; Vírus. |
|
Thesaurus Nal: |
Biological control; Insect viruses. |
|
Categoria do assunto: |
O Insetos e Entomologia |
|
Marc: |
LEADER 00916naa a2200313 a 4500
001 2122310
005 2020-12-17
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1007/s13744-020-00770-1$2DOI
100 1 $aSÓSA-GOMEZ, D. R.
245 $aEntomopathogenic Viruses in the Neotropics$bCurrent Statusand Recently Discovered Species$h[electronic resource]
260 $c2020
650 $aBiological control
650 $aInsect viruses
650 $aBaculovirus
650 $aControle Biológico
650 $aDNA
650 $aInseto
650 $aRNA
650 $aVírus
700 1 $aMORGADO, F. S.
700 1 $aCORRÊA, R. F. T.
700 1 $aSILVA, L. A.
700 1 $aARDISSON-ARAÚJO, D. M. P.
700 1 $aRODRIGUES, B. M. P.
700 1 $aOLIVEIRA, E. E.
700 1 $aAGUIAR, R. W. S.
700 1 $aRIBEIRO, B. M.
773 $tNeotropical Entomology$gv. 49, n. 3, p. 315-331, mai. 2020.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Soja (CNPSO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Agroenergia. |
|
Data corrente: |
15/03/2019 |
|
Data da última atualização: |
18/11/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
VICTOR, P. A.; GONCALVES, S. B.; MACHADO, F. |
|
Afiliação: |
Priscilla Araújo Victor, UnB; SILVIA BELEM GONCALVES, CNPAE; Fabricio Machado, UnB. |
|
Título: |
Styrene/Lignin-Based polymeric composites obtained through a sequential Mass-Suspension polymerization process. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Journal of Polymers and the Environment, v. 26, p. 1755-1774, 2018. |
|
Idioma: |
Português |
|
Conteúdo: |
A modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an important platform for developing attractive polymeric materials from renewable resources. MenosA modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an importan... Mostrar Tudo |
|
Palavras-Chave: |
Compósitos poliméricos; Polimerização sequencial; Polymer composites. |
|
Thesaurus NAL: |
Lignin; Styrene. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/194298/1/SILVIA-Victor2018-Article-StyreneLignin-BasedPolymericCo.pdf
|
|
Marc: |
LEADER 02235naa a2200205 a 4500
001 2107112
005 2019-11-18
008 2018 bl uuuu u00u1 u #d
100 1 $aVICTOR, P. A.
245 $aStyrene/Lignin-Based polymeric composites obtained through a sequential Mass-Suspension polymerization process.$h[electronic resource]
260 $c2018
520 $aA modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an important platform for developing attractive polymeric materials from renewable resources.
650 $aLignin
650 $aStyrene
653 $aCompósitos poliméricos
653 $aPolimerização sequencial
653 $aPolymer composites
700 1 $aGONCALVES, S. B.
700 1 $aMACHADO, F.
773 $tJournal of Polymers and the Environment$gv. 26, p. 1755-1774, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agroenergia (CNPAE) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
