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.
All Author(s) ListZeng XL, Ye L, Yu SH, Li H, Sun R, Xu JB, Wong CP
Journal nameNanoscale
Year2015
Month1
Day1
Volume Number7
Issue Number15
PublisherRoyal Society of Chemistry
Pages6774 - 6781
ISSN2040-3364
eISSN2040-3372
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesChemistry, Multidisciplinary;Nanoscience & Nanotechnology;Materials Science, Multidisciplinary;Physics, Applied;Chemistry;Science & Technology - Other Topics;Materials Science;Physics

Last updated on 2020-23-11 at 01:13