|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
13/11/2019 |
|
Data da última atualização: |
28/05/2020 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
LOUREÇON, T. V.; SANTILLI, B. V.; MAGALHAES, W. L. E.; BOLZON DE MUNIZ, G. I. |
|
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. |
|
Título: |
Thermal stabilization of wood/polypropylene composites through addition of unmodified, low-cost Kraft lignin. |
|
Ano de publicação: |
2020 |
|
Fonte/Imprenta: |
Waste and Biomass Valorization, v. 11, n. 4, p. 1555-1563, Apr. 2020. |
|
DOI: |
10.1007/s12649-018-0484-6 |
|
Idioma: |
Inglês |
|
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). |
|
Palavras-Chave: |
Bio-based polymer; Compósito; Kraft lignin; Lignocellulosic; Polímero de base biológica; Propriedade térmica; Water absorption. |
|
Thesagro: |
Absorção de Água; Lignina. |
|
Thesaurus Nal: |
Thermal properties. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
