Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 27, Issue 4, Pages 479-485Publisher
SPRINGER
DOI: 10.1142/S025676790900414X
Keywords
Polarization fatigue; Ferroelectric polymer; Crystallinity
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Funding
- Science and Technology Commission of Shanghai Municipality [0652NM028]
- Shanghai Leading Academic Discipline Project [B113]
- National Natural Science Foundation of China [10804020]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [200802461088]
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The dependence of polarization fatigue on crystallinity of vinylidene fluoride and trifluoroethylene copolymer films was studied. Experimental data indicated that the higher the crystallinity of the film was, the slower the fatigue rate of the film became. A possible explanation was put forward, and it was regarded that the space charges, trapped at the boundaries of crystallites and/or captured by the defects lying both in amorphous and crystalline phases, should make the major contribution to polarization fatigue.
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