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Published in: Cellulose 16/2021

24-09-2021 | Original Research

Controllable Fe ion-anchored graphene heterostructures for robust and highly thermal conductive cellulose nanofiber composites

Authors: Bo Shan, Yuzhu Xiong

Published in: Cellulose | Issue 16/2021

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Abstract

Developing the polymer-based thermal interface materials (TIMs) is one of the most promising approaches to address heat accumulation along with the functionalization, integration, and miniaturization of modern electronics, while it is still a great challenge to balance the thermal conductivity and mechanical properties. In this article, Fe ion-anchored graphene (FeG) is successfully fabricated by a facile in situ Fe reduction of graphene oxide (GO) approach, and then cellulose nanofibers (CNFs)/FeG composites are prepared by vacuum-assisted filtration. FeG exhibits excellent dispersion and exfoliation in CNFs/FeG composites, due to the strong interfacial interaction between CNFs and FeG, such as hydrogen bonds and “Fe–O” complex binding. Thus, CNFs/FeG composite has the largely improved thermal conductivity up to 30.2 W/mK at FeG content of 50 wt%, which is substantially increased by 1160% in comparison with that of pure CNFs. In addition, the mechanical performances of CNFs/FeG-50 are unexpectedly simultaneously enhanced to 244 MPa for tensile strength, 4.10% for elongation at break, and 9.5 GPa for Young’s modulus, outperforming pure CNFs with increase of 137%, 33%, and 121%, respectively. This study provides a significant strategy for the design and construction of high thermal conductivity and high-performance polymeric TIMs in flexible and portable electronics.

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Metadata
Title
Controllable Fe ion-anchored graphene heterostructures for robust and highly thermal conductive cellulose nanofiber composites
Authors
Bo Shan
Yuzhu Xiong
Publication date
24-09-2021
Publisher
Springer Netherlands
Published in
Cellulose / Issue 16/2021
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-021-04202-0

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