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Construction and mechanism study of lignin-based polyurethane with high strength and high self-healing properties.
Du, Jiahao; Wang, Huan; Huang, Zhiyi; Liu, Xiaochun; Yin, Xinshan; Wu, Jianxin; Lin, Wenjing; Lin, Xiaofeng; Yi, Guobin.
Afiliación
  • Du J; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Wang H; School of Chemistry and Chemical Engineering, Guangzhou Key Laboratory of Sensing Materials & Devices, Guangzhou University, Guangzhou 510006, China. Electronic address: cewanghuan@gzhu.edu.cn.
  • Huang Z; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Liu X; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Yin X; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Wu J; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Lin W; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Lin X; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China.
  • Yi G; School of Chemical Engineering and Light Industry, Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Guangdong University of Technology, Guangzhou 510006, China. Electronic address: ygb116@163.com.
Int J Biol Macromol ; 248: 125925, 2023 Sep 01.
Article en En | MEDLINE | ID: mdl-37499717
Lignin is a natural polymer with abundant functional groups with great application prospects in lignin-based polyurethane elastomers with self-healing abilities. In this study, a lignin self-healing polyurethane (PUDA-L) was specially designed using lignin as the raw material of polyurethane, combining lignin with Diels-Alder (DA) bond and hydrogen bonds. The experimental results showed that PUDA-L was prepared with good thermal stability, fatigue resistance, shape memory effect, excellent mechanical strength, and self-healing ability by partially replacing the crosslinking agents with bio-based lignin and hydroxylated modified lignin to increase the hydroxyl content. Polyurethane has a tensile strength of up to 29 MPa and an elongation at break of up to 500 %. The excellent self-healing ability of PUDA-L originates from the internal DA bonds and cross-linked hydrogen bonds. After the dumbbell sample was fused and heated at 130 °C for 4 h, the elastomer could be completely healed, the tensile strength was restored to 29 MPa, and the self-healing efficiency was up to 100 %. The developed PUDA-L elastomer has promising applications in sensors and smart skins.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Poliuretanos / Prunella Idioma: En Revista: Int J Biol Macromol Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Poliuretanos / Prunella Idioma: En Revista: Int J Biol Macromol Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos