Abstract
Free radical copolymerization using a peroxide as initiator was carried out to prepare the copolymer of vinylidene fluoride (VDF) and hexafluoroacetone (HFA). The monomer reactivity ratios of r1=4.0 and r2=0.1 were obtained by Fineman-Ross method. The microstructure for comonomer sequence of the VDF-HFA copolymer was determined by high resolution 19F, 1H, and 13C NMR, and infrared spectra. It was found that HFA unit exists mainly in the form of -CH2-CF2-C(CF3)2-O- in the backbone chain. In the DSC measurement, it was found that the amorphous region in the copolymer decreases with increasing HFA content.
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Maeda, K., Yamauchi, T. & Tsutsumi, K. Microstructural Studies of Vinylidene Fluoride-Hexafluoroacetone Copolymer. Polym J 22, 681–687 (1990). https://doi.org/10.1295/polymj.22.681
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DOI: https://doi.org/10.1295/polymj.22.681