研究目的
Investigating the structural changes and space charge relaxation processes in ferroelectric VDF/TFE 94/6 copolymer films.
研究成果
Recrystallization of the film from the melt is accompanied by small a-crystals formation, resulting in a decrease in activation energy of the space-charge relaxation process.
研究不足
The study focuses on isotropic films of VDF/TFE 94/6 copolymer and may not be directly applicable to other types of films or copolymers.
1:Experimental Design and Method Selection:
Dielectric relaxation spectroscopy (DRS) was employed to study space charge relaxation processes.
2:Sample Selection and Data Sources:
Films of VDF/TFE 94/6 copolymer were prepared by crystallization from a solution in acetone.
3:List of Experimental Equipment and Materials:
A broadband dielectric spectrometer Novocontrol Concept 40 was used for DRS measurements.
4:Experimental Procedures and Operational Workflow:
Films were heated and cooled, and their structural transformations were studied by DSC and IR spectroscopy.
5:Data Analysis Methods:
The data were analyzed using the complex electric modulus formalism.
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