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The interfacial effect of TiO 2 –Ag core–shell micro‐/nanowires on poly(arylene ether nitrile)
Author(s) -
Huang Xu,
Feng Mengna,
Liu Xiaobo
Publication year - 2014
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4680
Subject(s) - materials science , arylene , scanning electron microscope , composite number , composite material , amorphous solid , crystallinity , transmission electron microscopy , nanowire , chemical engineering , nanotechnology , alkyl , crystallography , organic chemistry , chemistry , engineering , aryl
Novel TiO 2 –Ag core–shell micro‐/nanowires ( TiO 2 shell coating on Ag core) have been successfully prepared via a solvent–thermal method. Energy dispersive spectroscopy and X‐ray diffraction analyses revealed that the micro‐/nanowires were composed of Ag, Ti and O elements, and Ag was face‐centered cubic whereas TiO 2 was mainly amorphous. Interestingly, scanning electron microscopy ( SEM ) and transmission electron microscopy results showed that most of the TiO 2 bristles were perpendicular to and uniformly studded on the surface of the Ag cores. Subsequently, TiO 2 –Ag/poly(arylene ether nitrile) ( PEN ) composite films were prepared via a solution‐casting method in order to investigate the effect of TiO 2 –Ag on the PEN matrix. SEM images showed that there was good interfacial adhesion between fillers and PEN matrix owing to the special bristle‐like structure. Thermal analysis results showed that the TiO 2 –Ag/ PEN composite films possessed excellent thermal properties endowed by the PEN matrix. The dielectric constant of the composite films increased to 9.3 at 100 Hz when the TiO 2 –Ag loading reached 40 wt%. Rheology measurements revealed that the network formed by TiO 2 –Ag was sensitive to shear stress and nearly time independent. © 2013 Society of Chemical Industry