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Chin J Mater Res  2009, Vol. 23 Issue (2): 149-152    DOI:
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Dynamical phase transition and ferroelectric properties of poly(vinylidene fluoride) in electric poling
YE Yun1; GUO Tailiang1; JIANG Yadong2
1.College of Physics and Telecommunication Engineering; Fuzhou University; Fuzhou 350002
2.School of Optoelectronic Information; University of Electric Science and Technology of China; Chengdu 610054
Cite this article: 

YE Yun GUO Tailiang JIANG Yadong. Dynamical phase transition and ferroelectric properties of poly(vinylidene fluoride) in electric poling. Chin J Mater Res, 2009, 23(2): 149-152.

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Abstract  

The phase transition of crystalline in poly(vinylidene fluoride) from α anti-ferroelectric to β ferroelectric phase achieved by electric poling treatment with a high temperature has been investigated. It was found that the ferroelectricity of polymer was improved and the polarization depended on increasing poling electric field was non-linear. The phase transition of PVDF in electric field was theoretical simulated based on dynamical equilibrium. The results show that the effective electric field affected on the crystalline is 50 MV/m, which accords with the coercive field of ferroelectric PVDF. At the same time, the effective electric field affected on the amorphous is close to starting electric field of the phase transition. It demonstrates that the method of dynamical equilibrium simulated phase transition of crystalline in PVDF is feasible.

Key words:  organic polymer materials      Poly(vinylidene fluoride)      electric poling      dynamical equilibrium      ferroelectricity     
Received:  04 August 2008     
ZTFLH: 

TB32

 
Fund: 

Supported by National Science Fund for Distinguished Young Scholars No.60425101.

URL: 

https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2009/V23/I2/149

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