期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 225, 期 -, 页码 1405-1414出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2022.11.198
关键词
Deep eutectic solvent; Molecular dynamics; Lignin; ZnO
Lignin/ZnO composites were prepared using a simple one-pot method with urea and ZnCl2-deep eutectic solvent (U/ZnCl2-DES) as solvent and raw material. The interaction mechanism between lignin functional groups and DES was clarified by molecular dynamics simulation, and it was blended with waterborne polyurethane (WPU) to form a film for evaluating its feasibility in ultraviolet shielding. The results showed that lignin/ZnO composites with excellent ultraviolet shielding properties were successfully prepared, and enzymatic hydrolysis lignin (EHL) showed better compatibility with ZnO compared to lignosulfonate (SL). When the addition of EHL/ZnO-N12.5 complex was 1.5%, the WPU film had good mechanical properties, light transmission, and ultraviolet shielding.
Lignin, as the aromatic polymer in the world, has attracted more attention because of rich functional groups. In this study, lignin/ZnO composites was prepared by a simple one-pot method rely on urea and ZnCl2-deep eutectic solvent (U/ZnCl2-DES) as solvent and raw material. Through molecular dynamics simulation, the interaction mechanism between lignin functional groups and DES was clarified, and it was blended with waterborne polyurethane (WPU) to form a film, while the feasibility of its application in ultraviolet shielding was evaluated. The results showed that lignin /ZnO composites with excellent ultraviolet shielding properties were successfully prepared. Compared with lignosulfonate (SL), enzymatic hydrolysis lignin (EHL) was easier to combine with ZnO, which was benefit to prepare lignin/ZnO composites. When the addition of EHL/ZnO-N12.5 complex was 1.5 %, the WPU film prepared has good mechanical properties (elongation at break was 25.53 %, tensile strength was 1422 kPa), good light transmission and ultraviolet shielding.
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