represent the all trans conformation [25] and they ex-hibit large absorbances in the spectrum of the copolymer, but significantly reduced in the relaxor terpolymer. The band at 612 cm−1 corresponds to the TGTG conforma-
tion and it can only be observed in the spectrum of the terpolymer. The absorbance at 510 cm−1 represents the C-F bending mode in the polar T3GT3G conformation and it is observed in both spectra. From the FTIR data, it can be deduced that ∼55% of the terpolymer chains
exhibit TGTG non-polar conformations, while only 20% of the chains are in the all-trans polar conformation.