期刊
NANOSCALE
卷 7, 期 10, 页码 4443-4450出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4nr07228f
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资金
- SAB Miller
- European Union [604391]
- Science Foundation Ireland (SFI) [SFI/12/RC/2278]
In this work we have used melt-processing to mix liquid-exfoliated boron-nitride nanosheets with PET to produce composites for gas barrier applications. Sonication of h-BN powder, followed by centrifugation-based size-selection, was used to prepare suspensions of nanosheets with aspect ratio >1000. The solvent was removed to give a weakly aggregated powder which could easily be mixed into PET, giving a composite containing well-dispersed nanosheets. These composites showed very good barrier performance with oxygen permeability reductions of 42% by adding just 0.017 vol% nanosheets. At low loading levels the composites were almost completely transparent. At higher loading levels, while some haze was introduced, the permeability fell by similar to 70% on addition of 3 vol% nanosheets.
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