| 초록 |
Ferroelectric polymers containing vinylidene fluoride (VDF), trifluoroethylene(TrFE), and chlorotrifluoroethylene(CTFE) prepared by suspension polymerization. The CTFE contents were controlled(1~10 monomer mol%) to investigate the effect of CTFE on terpolymer physical properties. The structural characteristics including microstructure, chain conformation and crystallinity of the polymers have been carefully elucidated as a function of the chemical composition by NMR(1H-Nuclear Magnetic Resonance, 19F-NMR), FT-IR(Fourier Trnsform Infrared Spectrometry) spectroscopies. Consistent with the 19F-NMR result, it was found that the main structure of the terpolymer includes VDF-VDF head-to-tail sequence and tail-to-tail sequence of VDF-CTFE and VDF-TrFE. |
