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Preparation and improved mechanical properties of nano‐TiO 2 filled Poly ( p ‐phenylene benzobisoxazole) fiber
Author(s) -
Zhu H. J.,
Jin J. H.,
Li G.,
Jiang J. M.,
Yang S. L.
Publication year - 2009
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1275
Subject(s) - materials science , poly(p phenylene) , thermogravimetric analysis , composite material , fiber , ultimate tensile strength , scanning electron microscope , polymerization , dispersion (optics) , thermal decomposition , nano , polymer , chemical engineering , organic chemistry , engineering , chemistry , physics , optics
With in‐situ bending various contents of nano‐sized titanium dioxide (TiO 2 ) were introduced into the solution polymerization system of poly (p‐phenylene benzobisoxazole) (PBO), and the blends were spun into high performance fibers via liquid crystal spinning. The dispersion of TiO 2 in matrix was observed by the scanning electron microscopy. The mechanical and thermal properties of PBO and TiO 2 /PBO fibers were tested by a tensilon and a thermogravimetric analyser. The results show that the tensile strength and modulus of the PBO/TiO 2 fiber containing 1.5 wt % TiO 2 is 4.62 GPa and 109.99 GPa, which is approximately 36% and 18% higher than that of the pure PBO fiber. The decomposition temperature of the composites is also improved from 697.6°C to 701.8°C. The effect of TiO 2 nanoparticles on the structure of PBO is also studied. Copyright © 2009 John Wiley & Sons, Ltd.
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