Type

Journal Article

Authors

Valeria Nicolosi
Arlene O'Neill
Peter May
Iouri Gounko
Jonathan Nesbit Coleman
Yurii K Gun'ko
Amro Satti
Toby Sainsbury

Subjects

Chemistry

Topics
chains surface functionalization polymer nanocomposite polymer mechanical properties nitrene nanosheets exfoliated nanosheets organic solvents integration exfoliation boron nitride

Covalently functionalized hexagonal boron nitride nanosheets by nitrene addition (2012)

Abstract Exfoliated h-BN nanosheets were covalently functionalized via a one-step nitrene addition using azide precursor molecules. Functionalized h-BN nanosheets were found to exhibit markedly enhanced dispersability relative to pristine h-BN in a range of organic solvents. Extension of the functionalization methodology allowed the covalent attachment of polymer chains to the surface of h-BN nanosheets. Polymer nanocomposites were prepared using the molecularly-functionalized h-BN nanosheets within a polycarbonate (PC) matrix, while h-BN nanosheets functionalized with poly(bisphenol A-co-epichlorohydrin) (PBCE) chains were employed within a PBCE matrix. In both cases the mechanical properties were studied. Significant increases in moduli, strength and ductility of the functionalized h-BN nanocomposites indicated enhanced reinforcement of the functionalized h-BN filler materials over pristine h-BN. The implications of tuning the surface chemistry of exfoliated nanosheets exactly to the chemis-try of a host polymer matrix are considered.
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Full list of authors on original publication

Valeria Nicolosi, Arlene O'Neill, Peter May, Iouri Gounko, Jonathan Nesbit Coleman, Yurii K Gun'ko, Amro Satti, Toby Sainsbury

Experts in our system

1
Valeria Nicolosi
Trinity College Dublin
Total Publications: 67
 
2
Arlene O'Neill
Trinity College Dublin
Total Publications: 25
 
3
Peter May
Trinity College Dublin
Total Publications: 27
 
4
Iouri Gounko
Trinity College Dublin
Total Publications: 71
 
5
Jonathan Coleman
Trinity College Dublin
Total Publications: 217
 
6
Yurii K Gun'ko
Trinity College Dublin
Total Publications: 49