期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 16, 页码 6363-6370出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c00420
关键词
graphene sheets; nanodiamond; nanofibrillated cellulose; hierarchical structure; thermal conductivity; mechanical property
资金
- National Natural Science Foundation of China [51703122]
- PetroChina Innovation Foundation [2016D-5007-0508]
- Natural Science Foundation of Shanghai [17ZR1440700]
- Program of Shanghai Academic/Technology Research Leader [17XD1424400]
Polymer materials with high thermal conductivities play an important role in the development of next-generation electronics. In this work, high thermally conductive nanofibrillated cellulose (NFC) hybrid films based on nanodiamonds (NDs) and graphene sheets (GSs) were prepared by a facile vacuum-filtration self-assembly process. Inspired by the structure of nacre, zero-dimensional NDs, two-dimensional GSs, and one-dimensional NFC were used to build hierarchical structures, which lead to excellent mechanical properties of the hybrid films. More importantly, an efficient thermally conductive pathway, involving NDs and GSs, endows the hybrid films with a much higher in-plane thermal conductivity. At a filler content of 10 wt %, the in-plane thermal conductivity of the f-C/ND/G hybrid film could reach 14.35 W.m(-1).K-1, which is at a high level compared with other published studies. This hybrid film exhibits significant thermal conductivity combined with excellent mechanical properties that can be applied to portable electronic equipment as a lateral heat spreader.
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