Boron nitride nanosheets as barrier enhancing fillers in melt processed composites
Item Type:Journal Article
Citation:Xie, S. Istrate, O.M. May, P. Barwich, S. Bell, A.P. Khan, U. Coleman, J.N., Boron nitride nanosheets as barrier enhancing fillers in melt processed composites, Nanoscale, 7, 10, 2015, 4443 - 4450
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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]70% on addition of 3 vol% nanosheets.
Science Foundation Ireland (SFI)
Type of material:Journal Article
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