纳米复合材料
材料科学
聚合物
纤维素
复合材料
化学工程
工程类
作者
Shengwen Kong,Chuangqi Zhao,Yan Sun,Jin Huang,Longhao Zhang,Yunfei Ru,Hangsheng Zhou,Tianxu Zhou,Mingjie Liu
出处
期刊:Matter
[Elsevier]
日期:2024-05-01
标识
DOI:10.1016/j.matt.2024.04.014
摘要
Sustainable and biodegradable materials derived from biomass are appealing candidates to replace fossil-based materials. However, the mechanical performance of biomass is insufficient for practical applications. Here, inspired by fish scales, we report a strategy to construct large-area, high-strength cellulose nanocrystal (CNC) nanocomposites with confined polymer nanocrystallization in Bouligand structures. By regulating the electrostatic repulsion of CNCs, the spacing of nanorods was reduced from 8.8 ± 0.4 to 5.0 ± 0.3 nm, and the crystallinity of the interphase extended polymer chains was regulated within such a confined space. The resulting nanocomposite films exhibited a tensile strength of 456.6 ± 18.6 MPa. Moreover, the nanocomposite films could be laminated to bulk materials, which exhibit excellent fracture toughness of 7.1 ± 0.2 MPa m1/2 and hardness of 6.1 ± 0.6 GPa while being light in weight. This efficient cellulose utilization strategy offered a promising pathway for the production of robust, biodegradable, and sustainable cellulosic bioplastics.
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