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Registro Completo |
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
12/01/2016 |
Data da última atualização: |
12/01/2016 |
Autoria: |
CARPENTER, J. B.; STEVENSON, J. A. |
Título: |
A secondary leaf spot of the Hevea rubbertree caused by Glomerella cingulata. |
Ano de publicação: |
1954 |
Fonte/Imprenta: |
Plant Disease Reporter, v. 38, n. 7, p. 494-498, July 1954. |
Idioma: |
Inglês |
Thesagro: |
Doença de Planta; Seringueira. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00441naa a2200145 a 4500 001 2033672 005 2016-01-12 008 1954 bl --- 0-- u #d 100 1 $aCARPENTER, J. B. 245 $aA secondary leaf spot of the Hevea rubbertree caused by Glomerella cingulata. 260 $c1954 650 $aDoença de Planta 650 $aSeringueira 700 1 $aSTEVENSON, J. A. 773 $tPlant Disease Reporter$gv. 38, n. 7, p. 494-498, July 1954.
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Embrapa Amazônia Ocidental (CPAA) |
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Registro Completo
Biblioteca(s): |
Embrapa Instrumentação. |
Data corrente: |
18/03/2022 |
Data da última atualização: |
24/06/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
GUIMARÃES, B. M. R.; SCATOLINO, M. V.; MARTINS, M. A.; FERREIRA, S. R.; MENDES, L. M.; LIMA, J. T.; GUIMARÃES JUNIOR, M.; TONOLI, G. H. D. |
Afiliação: |
MARIA ALICE MARTINS, CNPDIA. |
Título: |
Bio-based films/nanopapers from lignocellulosic wastes for production of added-value micro-/nanomaterials. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Environmental Science and Pollution Research, v. 29, 2022. |
Páginas: |
8665-8683 |
DOI: |
https://doi.org/10.1007/s11356-021-16203-4 |
Idioma: |
Inglês |
Conteúdo: |
The growing demand for products with lower environmental impact and the extensive applicability of cellulose nanofibrils (CNFs) have received attention due to their attractive properties. In this study, bio-based films/nanopapers were produced with CNFs from banana tree pseudostem (BTPT) wastes and Eucalyptus kraft cellulose (EKC) and were evaluated by their properties, such as mechanical strength, biodegradability, and light transmittance. The CNFs were produced by mechanical fibrillation (after 20 and 40 passages) from suspensions of BTPT (alkaline pre-treated) and EKC. Films/nanopapers were produced by casting from both suspensions with concentrations of 2% (based in dry mass of CNF). The BTPT films/nanopapers showed greater mechanical properties, with Young’s modulus and tensile strength around 2.42 GPa and 51 MPa (after 40 passages), respectively. On the other hand, the EKC samples showed lower disintegration in water after 24 h and biodegradability. The increase in the number of fibrillation cycles produced more transparent films/nanopapers and caused a significant reduction of water absorption for both raw materials. The permeability was similar for the films/nanopapers from BTPT and EKC. This study indicated that attractive mechanical properties and biodegradability, besides low cost, could be achieved by bio-based nanomaterials, with potential for being applied as emulsifying agents and special membranes, enabling more efficient utilization of agricultural wastes. |
Palavras-Chave: |
Agro-industrial wastes; Bio-based material; Cellulose nanofibrils; Microfibrillated cellulose (MFC). |
Categoria do assunto: |
-- |
Marc: |
LEADER 02393naa a2200277 a 4500 001 2141029 005 2022-06-24 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s11356-021-16203-4$2DOI 100 1 $aGUIMARÃES, B. M. R. 245 $aBio-based films/nanopapers from lignocellulosic wastes for production of added-value micro-/nanomaterials.$h[electronic resource] 260 $c2022 300 $a8665-8683 520 $aThe growing demand for products with lower environmental impact and the extensive applicability of cellulose nanofibrils (CNFs) have received attention due to their attractive properties. In this study, bio-based films/nanopapers were produced with CNFs from banana tree pseudostem (BTPT) wastes and Eucalyptus kraft cellulose (EKC) and were evaluated by their properties, such as mechanical strength, biodegradability, and light transmittance. The CNFs were produced by mechanical fibrillation (after 20 and 40 passages) from suspensions of BTPT (alkaline pre-treated) and EKC. Films/nanopapers were produced by casting from both suspensions with concentrations of 2% (based in dry mass of CNF). The BTPT films/nanopapers showed greater mechanical properties, with Young’s modulus and tensile strength around 2.42 GPa and 51 MPa (after 40 passages), respectively. On the other hand, the EKC samples showed lower disintegration in water after 24 h and biodegradability. The increase in the number of fibrillation cycles produced more transparent films/nanopapers and caused a significant reduction of water absorption for both raw materials. The permeability was similar for the films/nanopapers from BTPT and EKC. This study indicated that attractive mechanical properties and biodegradability, besides low cost, could be achieved by bio-based nanomaterials, with potential for being applied as emulsifying agents and special membranes, enabling more efficient utilization of agricultural wastes. 653 $aAgro-industrial wastes 653 $aBio-based material 653 $aCellulose nanofibrils 653 $aMicrofibrillated cellulose (MFC) 700 1 $aSCATOLINO, M. V. 700 1 $aMARTINS, M. A. 700 1 $aFERREIRA, S. R. 700 1 $aMENDES, L. M. 700 1 $aLIMA, J. T. 700 1 $aGUIMARÃES JUNIOR, M. 700 1 $aTONOLI, G. H. D. 773 $tEnvironmental Science and Pollution Research$gv. 29, 2022.
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