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Preparation and characterization of thermally conductive thermoplastic polyurethane/h‐BN nanocomposites
Author(s) -
Çakmakçı Emrah,
Koçyiğit Çiler,
Çakır Selma,
Durmus Ali,
Kahraman M. Vezir
Publication year - 2014
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22692
Subject(s) - materials science , thermoplastic polyurethane , composite material , nanocomposite , differential scanning calorimetry , ultimate tensile strength , elastomer , polyurethane , boron nitride , thermogravimetric analysis , thermoplastic elastomer , zinc borate , polymer , chemical engineering , copolymer , fire retardant , physics , engineering , thermodynamics
Polyurethane nanocomposites are versatile engineering polymers with unique properties. In this study, nano hexagonal boron nitride containing thermoplastic polyurethane elastomers were prepared via melt blending and hot‐pressing techniques. The nanocomposites were characterized using Fourier transform infrared, differential scanning calorimetry, thermal gravimetric analysis, tensile tests, and thermal conductivity measurements. The surface morphology of the TPU/h‐BN composites was characterized by scanning electron microscopy. The optical properties of the composites were determined by UV transmittance measurements and as the amount of h‐BN increased, optical transparencies decreased dramatically. Nanocomposites displayed higher E‐modulus values and lower elongation at break values than the pure TPU elastomer. Char yields of TPUs increased with increasing h‐BN percentage. Moreover, thermal conductivity of the composite materials improved with the incorporation of h‐BN. POLYM. COMPOS., 35:530–538, 2014. © 2013 Society of Plastics Engineers