Water-dispersed thermo-responsive boron nitride nanotubes: synthesis and properties

0452426 - ÚMCH 2016 RIV GB eng J - Journal Article
Kalay, S. - Stetsyshyn, Y. - Lobaz, Volodymyr - Harhay, K. - Ohar, H. - Ҫulha, M.
Water-dispersed thermo-responsive boron nitride nanotubes: synthesis and properties.
Nanotechnology. Roč. 27, č. 3 (2016), 035703_1-035703_8. ISSN 0957-4484. E-ISSN 1361-6528
R&D Projects: GA ČR(CZ) GA13-08336S; GA MPO(CZ) FR-TI4/625
Institutional support: RVO:61389013
Keywords : boron nitride nanotubes * thermo-responsive polymer brushes * poly(N-isopropylacrylamide)
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.440, year: 2016

In this study, water-dispersed thermo-responsive boron nitride nanotubes (BNNTs) were prepared in a simple two-step process, where on the first step oligoperoxide was grafted via the interaction of amino groups (defects) of BNNTs with pyromellitic chloroanhydride fragments in oligoperoxide molecules. The second step involves N-isopropylacrylamide (NIPAM) graft polymerization 'from the surface' of oligoperoxide-functionalized BNNTs resulting in poly(N-isopropylacrylamide) (PNIPAM) coating. The pristine and functionalized BNNTs were characterized by thermogravimetric analysis, Fourier transform infrared spectroscopy, ultraviolet–visible spectrophotometry, dynamic light scattering, scanning electron microscopy and atomic force microscopy. PNIPAM-functionalized BNNTs exhibit excellent dispersibility in water and possess thermo-responsive properties. The water-dispersion of thermo-responsive PNIPAM-functionalized BNNTs can help their potential use in biomedical applications as 'smart' surfaces, nanotransducers and nanocarriers.
Permanent Link: http://hdl.handle.net/11104/0254833