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Synthesis and Flame Retardant Characteristic of Polyphosphazene Nanospheres
Corresponding Author(s) : Yanyan Zhu
Asian Journal of Chemistry,
Vol. 27 No. 4 (2015): Vol 27 Issue 4
Abstract
Polyphosphazene (PZs) nanospheres were synthesized by plus template induced self-assembly and added into low-density polyethylene (LDPE) to prepare LDPE/PZs nanocomposites to study its flame retardant characteristic. When 5 wt. % polyphosphazene nanospheres filling, the limiting oxygen index values changed from 17 to 21 and maximum ratio of optical density dropped from 157.86 to 137.46, which indicated that polyphosphazene nanospheres play a swelling flame retardant effect. Mechanical testing of the composites showed that when 1 wt. % fillers, the tensile strength changed from 28.6 to 36.2 MPa and elongation at break increased from 674 to 767 %. polyphosphazene nanospheres could be uniformly dispersed in the low-density polyethylene matrix and played a toughening and enhancing effect due to its crosslinking structure and lots of hydroxide radical on the surface.
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- A.R. Horrocks, B.K. Kandola, P.J. Davies, S. Zhang and S.A. Padbury, Polym. Degrad. Stab., 88, 3 (2005); doi:10.1016/j.polymdegradstab.2003.10.024.
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References
A.R. Horrocks, B.K. Kandola, P.J. Davies, S. Zhang and S.A. Padbury, Polym. Degrad. Stab., 88, 3 (2005); doi:10.1016/j.polymdegradstab.2003.10.024.
E. Sevkat, B. Liaw, F. Delale and B.B. Raju, Composites, 40, 1090 (2009); doi:10.1016/j.compositesa.2009.04.028.
C.W. Allen, J. Fire Sci., 11, 320 (1993); doi:10.1177/073490419301100404.
G.F. Levchik, Y.V. Grigoriev, A.I. Balabanovich, S.V. Levchik and M. Klatt, Polym. Int., 49, 1095 (2000); doi:10.1002/1097-0126(200010)49:10<1095::AID-PI405>3.0.CO;2-B.
H.R. Allcock, E.S. Powell, A.E. Maher, R.L. Prange and C.R. de Denus, Macromolecules, 37, 3635 (2004); doi:10.1021/ma030554x.
Z.P. Zhao, Q. Guo, S.G. Zhang, J.L. Sun and Z.J. Nie, Asian J. Chem., 23, 5407 (2011).
Z.P. Zhao, J.B. Ji and F.Y. Yu, Asian J. Chem., 26, 2137 (2014); doi:10.14233/ajchem.2014.16528.