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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: |
13/11/2019 |
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Data da última atualização: |
28/05/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LOUREÇON, T. V.; SANTILLI, B. V.; MAGALHAES, W. L. E.; BOLZON DE MUNIZ, G. I. |
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Afiliação: |
Tainise V. Lourençon, Aalto University; Beatriz V. Santilli, Universidade Federal do A,azonhas; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF; Graciela I. Bolzon de Muniz, UFPR. |
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Título: |
Thermal stabilization of wood/polypropylene composites through addition of unmodified, low-cost Kraft lignin. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Waste and Biomass Valorization, v. 11, n. 4, p. 1555-1563, Apr. 2020. |
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DOI: |
10.1007/s12649-018-0484-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Wood/polymer composites are elegant strategies to produce materials with good performance and reduced cost. However, the addition of a lignocellulosic fiber is often responsible for the decreased thermal stability, decreasing their appeal as building materials. Here, we aimed to improve the thermal stability of wood/polypropylene composites through addition of unmodified, low-cost, abundant, ready-to-use kraft lignin. Besides thermal behavior, the composites were analyzed concerning to water relationships, colorimetric parameters, mechanical properties, and morphological features. The wood/propylene composites with and without lignin showed a very similar morphology with good interaction between matrix and biomasses. Thickness swelling decreased as function of lignin increment. The composites with 4, 12 and 20 wt% of lignin content had temperatures at 10% mass loss shifted toward higher temperatures (332, 350 and 362 °C, respectively) compared to wood/ polypropylene (326 °C). Flexural strength of wood/propylene composite was preserved (42 MPa) at 4 wt% of lignin addition and tensile strength was kept unaltered in all ratios of lignin/wood (14?19 MPa). |
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Palavras-Chave: |
Bio-based polymer; Compósito; Kraft lignin; Lignocellulosic; Polímero de base biológica; Propriedade térmica; Water absorption. |
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Thesagro: |
Absorção de Água; Lignina. |
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Thesaurus NAL: |
Thermal properties. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02085naa a2200289 a 4500
001 2114259
005 2020-05-28
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1007/s12649-018-0484-6$2DOI
100 1 $aLOUREÇON, T. V.
245 $aThermal stabilization of wood/polypropylene composites through addition of unmodified, low-cost Kraft lignin.$h[electronic resource]
260 $c2020
520 $aWood/polymer composites are elegant strategies to produce materials with good performance and reduced cost. However, the addition of a lignocellulosic fiber is often responsible for the decreased thermal stability, decreasing their appeal as building materials. Here, we aimed to improve the thermal stability of wood/polypropylene composites through addition of unmodified, low-cost, abundant, ready-to-use kraft lignin. Besides thermal behavior, the composites were analyzed concerning to water relationships, colorimetric parameters, mechanical properties, and morphological features. The wood/propylene composites with and without lignin showed a very similar morphology with good interaction between matrix and biomasses. Thickness swelling decreased as function of lignin increment. The composites with 4, 12 and 20 wt% of lignin content had temperatures at 10% mass loss shifted toward higher temperatures (332, 350 and 362 °C, respectively) compared to wood/ polypropylene (326 °C). Flexural strength of wood/propylene composite was preserved (42 MPa) at 4 wt% of lignin addition and tensile strength was kept unaltered in all ratios of lignin/wood (14?19 MPa).
650 $aThermal properties
650 $aAbsorção de Água
650 $aLignina
653 $aBio-based polymer
653 $aCompósito
653 $aKraft lignin
653 $aLignocellulosic
653 $aPolímero de base biológica
653 $aPropriedade térmica
653 $aWater absorption
700 1 $aSANTILLI, B. V.
700 1 $aMAGALHAES, W. L. E.
700 1 $aBOLZON DE MUNIZ, G. I.
773 $tWaste and Biomass Valorization$gv. 11, n. 4, p. 1555-1563, Apr. 2020.
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