Title :
Study of the morphology and phase transition in ferroelectric polymer blends
Author :
Wen, Jianxun ; Wang, Xianshan ; Hu, Yuhua ; Lin, Jiaping
Author_Institution :
Inst. of Organ. Chem., Acad. Sinica, Shanghai, China
Abstract :
Two copolymers of vinylidene fluoride with trifluoroethylene (TrFE 23 mol%) and tetrafluoroethylene (TeFE 20 mol%) were used to prepare the blends. We have studied the crystal structure and textures of the blends using X-ray diffraction, optical microscope and DSC. The ferroelectric properties of the blends as a function of Ben composition. Curie point Tc was determined from dielectric measurement. It is found that Tc upon heating is nearly independent of blend compositions, but Tc upon cooling changes to separated transition temperatures, being located near 120°C and 70°C respectively
Keywords :
X-ray diffraction; ferroelectric Curie temperature; ferroelectric materials; ferroelectric transitions; polymer blends; polymer films; polymer structure; texture; thermal analysis; Curie point; DSC; X-ray diffraction; crystal structure; dielectric measurement; ferroelectric polymer blend; morphology; optical microscopy; phase transition; texture; vinylidene fluoride tetrafluoroethylene copolymer; vinylidene fluoride trifluoroethylene copolymer; Chemistry; Cooling; Dielectric measurements; Ferroelectric materials; Heating; Morphology; Optical microscopy; Polymers; Temperature; X-ray diffraction;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578217
