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Erschienen in: Cellulose 16/2019

20.08.2019 | Original Research

Enhanced thermal conductivity of cellulose nanofibril/aluminum nitride hybrid films by surface modification of aluminum nitride

verfasst von: Kun Zhang, Yanxv Lu, Ningke Hao, Shuangxi Nie

Erschienen in: Cellulose | Ausgabe 16/2019

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Abstract

In this work, γ-aminopropyltriethoxysilane treated aluminum nitride nanosheets (TAlN) were blended with cellulose nanofibrils (CNFs), and a novel nano-flexible composite film was prepared by vacuum filtration. The interactions between the CNFs and TAlN were studied, and the effect of the amount of the added TAlN on the properties of the composites was discussed. Due to the function of silane, the dispersibility of the AlN nanosheets in the CNF substrate is improved and resulting in the formation of covalent bonds between them. The silane treatment reduces the phonon scattering between the AlN and CNF substrate interfaces; thus, the composite film exhibits excellent thermal conductivity. The in-plane thermal conductivity of the composite film reaches 5.11 W/mK when the amount of TAlN added is 25 wt%. The high thermal conductivity composite film material can realize thermal management for flexible energy storage electronic products; thus, effectively promoting the development of green flexible electronic devices.

Graphic abstract

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Metadaten
Titel
Enhanced thermal conductivity of cellulose nanofibril/aluminum nitride hybrid films by surface modification of aluminum nitride
verfasst von
Kun Zhang
Yanxv Lu
Ningke Hao
Shuangxi Nie
Publikationsdatum
20.08.2019
Verlag
Springer Netherlands
Erschienen in
Cellulose / Ausgabe 16/2019
Print ISSN: 0969-0239
Elektronische ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-019-02694-5

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