Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 220, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2022.109299
Keywords
Nano composites; Mechanical properties; Strength; Fracture toughness
Categories
Funding
- National Nature Science Foundation of China [22178211]
- Key Research and Development Program of Shaanxi Province of China [2021ZDLGY14-05]
- Shannxi Prov-ince Education Department Key Project [20JY002]
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An eco-friendly composite film with excellent mechanical properties was developed through dual crosslinking. The film demonstrated outstanding mechanical performance, as well as excellent degradability, thermal stability, and UV-shielding capability.
It is urgently needed to develop an eco-friendly composite films with excellent mechanical properties for biomedicine, optoelectronics, and water treatment applications. Here, we acquired a strong, tough, and sustainable TEMPO-oxidized cellulose nanofiber (TOCN)-based composite film by the dual crosslinking of poly dopamine (PDA) and iron ions (Fe3+). The ultimate TOCN/PDA/Fe3+ ternary composites exhibited outstanding mechanical properties with a strength of 220 MPa, a strain of 13.26% and a toughness of 17.73 MJ m(-3), increasing by 113%, 149%, and 417% compared to pure TOCN film, respectively. This result was caused by the coordination bonds and covalent bonds. Moreover, the TOCN/PDA/Fe3+ composite film also showed excellent degradability, thermal stability and UV-shielding capability.
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