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Covalent derivatization of boron nitride nanotubes with peroxides and their application in polycarbonate composites

Abstract

The novel derivatization of boron nitride nanotubes (BNNTs) with two organic peroxides (lauroyl peroxide and dicumyl peroxide) is presented. The functionalized-BNNTs (f-BNNTs) were characterized by FTIR, 1H NMR, TGA, and SEM. These thermally labile peroxides can decompose to generate an alkoxyl radical, or an alkyl radical (with the loss of CO2), which then acts as a Lewis base to attack the electron deficient boron sites of BNNTs. This results in the covalent formation of R-O-BNNT or R-BNNT bonds. Thin films (15 to 35 µm thickness) of 0.5 to 1.0 wt% lauryl-BNNT/polycarbonate and 1 wt% BNNT-OH/polycarboante composites were fabricated and their transparency demonstrated. Semi-transparent, hot-pressed disks (200 µm thickness) of 1.0 wt% cumyloxy-BNNT/polycarbonate and 1.0 wt% lauryl-BNNT/polycarbonate composites were also fabricated and mechanically tested. The Young’s modulus and the maximum tensile stress were increased by 12% and 8%, respectively, over the corresponding properties of BNNT-free polycarbonate samples.

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Publication details

The article was received on 23 Jan 2017, accepted on 19 Jun 2017 and first published on 19 Jun 2017


Article type: Paper
DOI: 10.1039/C7NJ00193B
Citation: New J. Chem., 2017, Accepted Manuscript
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    Covalent derivatization of boron nitride nanotubes with peroxides and their application in polycarbonate composites

    S. Lin, B. Ashrafi, K. Laqua, K. S. Kim and B. Simard, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00193B

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