The DOI matches its Crossref record; 64 of the 64 references it cites were found in a registry or an index.
Highly Anisotropic Thermal Conductivity of Layer-by-Layer Assembled Nanofibrillated Cellulose/Graphene Nanosheets Hybrid Films for Thermal Management
Abstract
An anisotropic thermally conductive film with tailorable microstructures and macroproperties is fabricated using a layer-by-layer (LbL) assembly of graphene oxide (GO) and nanofibrillated cellulose (NFC) on a flexible NFC substrate driven by hydrogen bonding interactions, followed by chemical reduction process. The resulting NFC/reduced graphene oxide (RGO) hybrid film reveals an orderly hierarchical structure in which the RGO nanosheets exhibit a high degree of orientation along the in-plane direction. The assembly cycles dramatically increase the in-plane thermal conductivity (λ X ) of the hybrid film to 12.6 W·m –1 ·K –1, while the cross-plane thermal conductivity (λ Z ) shows a lower value of 0.042 W·m –1 ·K –1 in the hybrid film with 40 assembly cycles. The thermal conductivity anisotropy reaches up to λ X /λ Z = 279, which is substantially larger than that of similar polymeric nanocomposites, indicating that the LbL assembly on a flexible NFC substrate is an efficient technique for the preparation of polymeric nanocomposites with improved heat conducting property. Moreover, the layered hybrid film composed of 1D NFC and 2D RGO exhibits synergetic mechnical properties with outstanding flexibility and a high tensile strength (107 MPa). The combination of anisotropic thermal conductivity and superior mechanical performance may facilitate the applications in thermal management.
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Cites
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Cited by
Recent Progress in Graphene/Polymer Nanocomposites
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Thermally Insulating Nanocellulose‐Based Materials
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Metadata
- Authors
- Song, N., Jiao, D., Cui, S., Hou, X., Ding, P., & Shi, L.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-01-10
- Volume
- 9
- Issue
- 3
- Pages
- 2924-2932
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2564292562
- Cited by
- 317
- References
- 64
- FWCI
- 18.41
- Type
- journal article
- Language
- en
- Open access
- closed
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