期刊
NANOMATERIALS
卷 12, 期 23, 页码 -出版社
MDPI
DOI: 10.3390/nano12234152
关键词
cellulose nanofibrils; polyoxyethylene; graphene; nanocomposite films; electrical conductivity
类别
资金
- National Natural Science Foundation of China [51861165203]
- Sichuan Science and Technology Program [2020YJ0261, 2022JDRC0089]
- State Key Laboratory of Polymer Materials Engineering [sklpme2019-2-19]
- Program for Featured Directions of Engineering Multidisciplines of Sichuan University [2020SCUNG203]
- Joint Project for the Talent Innovation Sharing Alliance of Quanzhou [2021C064L]
In this study, a cellulose nanofibrils (CNFs)/few-layer graphene (FLG) hybrid was obtained from bamboo pulp and expanded graphene using a grinder, and used as a filler in a polyoxyethylene (PEO) matrix. The resulting nanocomposite film exhibited significantly improved mechanical and electrical properties, making it a promising candidate for future electronic devices.
In this work, a cellulose nanofibrils (CNFs)/few-layer graphene (FLG) hybrid is mechanically stripped from bamboo pulp and expanded graphene (EG) using a grinder. This strategy is scalable and environmentally friendly for high-efficiency exfoliation and dispersion of graphene in an aqueous medium. The in situ-generated CNFs play a key role in this process, acting as a green dispersant. Next, the obtained CNFs-FLG is used as a functional filler in a polyoxyethylene (PEO) matrix. When the composition of CNFs-FLG is 50 wt.%, the resultant PEO/CNFs-FLG nanocomposite film exhibits a Young's modulus of 1.8 GPa and a tensile strength of 25.7 MPa, showing 480% and 260% enhancement as compared to those of the pure PEO film, respectively. Remarkably, the incorporation of CNFs-FLG also provides the nanocomposite films with a stunning electrical conductivity (72.6 S/m). These attractive features make PEO/CNFs-FLG nanocomposite films a promising candidate for future electronic devices.
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