In this paper, we investigate the effect of thermal annealing on the degree of crystallinity, the fraction of electro-active phase (β-phase) and the dielectric properties, such as dielectric constant and loss tangent. Through control the thermal annealing conditions, dramatic improvements have been achieved. The degree of crystallinity is greatly enhanced up to 45.2%. The relative content of electro-active phase increases remarkably by 61% and the dielectric constant is improved greatly by 17.8% and reaches its maximum value of 9.9 meanwhile the dielectric loss being as low as 0.026.
References
1.
LovingerA, 1983Science220 1115.
2.
GregorioR and BorgesD, 2008Polymer49 4009.
3.
SajkiewiczP, WasiakA and GoclowskiZ, 1999Eur. Polym. J.35 423.
4.
ZhangQ M, BhartiVivek, ZhaoX, 1998Science280 2101.
5.
ChuB. J., ZhouX, RenK L, NeeseB, LinM R, WangQ, BauerF and ZhangQ M, 2006Science313 334.
6.
KolevG, AleksandrovaM, VuchevaY and DenishevK, 2014J. Phys.559 012015.
