Artificial nacre-like papers based on noncovalent functionalized boron nitride nanosheets with excellent mechanical and thermally conductive properties
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AbstractInspired by the nano/microscale hierarchical structure and the precise inorganic/organic interface of natural nacre, we fabricated artificial nacre-like papers based on noncovalent functionalized boron nitride nanosheets (NF-BNNSs) and poly(vinyl alcohol) (PVA) via a vacuum-assisted self-assembly technique. The artificial nacre-like papers exhibit excellent tensile strength (125.2 MPa), on a par with that of the natural nacre, and moreover display a 30% higher toughness (2.37 MJ m-3) than that of the natural nacre. These excellent mechanical properties result from an ordered 'brick-and-mortar' arrangement of NF-BNNSs and PVA, in which the long-chain PVA molecules act as the bridge to link NF-BNNSs via hydrogen bonds. The resulting papers also render high thermal conductivity (6.9 W m-1 K-1), and reveal their superiority as flexible substrates to support light-emitting-diode chips. The combined mechanical and thermal properties make the materials highly desirable as flexible substrates for next-generation commercial portable electronics. This journal is
All Author(s) ListZeng X., Ye L., Yu S., Li H., Sun R., Xu J., Wong C.-P.
Journal nameNanoscale
Year2015
Month4
Day21
Volume Number7
Issue Number15
PublisherRoyal Society of Chemistry
Place of PublicationUnited Kingdom
Pages6774 - 6781
ISSN2040-3364
eISSN2040-3372
LanguagesEnglish-United Kingdom

Last updated on 2020-29-11 at 02:37