For the terminal relaxation zone the polar stickers enhance the relaxation time and broaden the relaxation time spectrum.
For three of the model mixtures at 30 and 50 mol% [i.e., those containing bis (4-hydroxyphenyl) methane, 2,6 dihydroxynaphthalene, and 2,2-methylenebis[6- 2-hydroxy-5-methylbenzyl -p-cresol] significantly broadened dielectric α relaxation time distributions were observed, indicating dynamic heterogeneity.
By comparing Figures 2 and 4, it is observed that the QEOEs and EA susceptibilities decrease and broaden with decreasing relaxation time.
Also observed after annealing were broadening of the relaxation time distribution and the appearance of interfacial polarization, suggesting a change in chain conformation from random coil to a locally stretched state to form a nematic domain.
Its identity was assigned as a species containing one boron and three equivalent fluorine atoms (e.g. BF3OH−) owing to the quartet splitting pattern observed in the 11B spectrum, its similarity to the 11B spectrum of BF3·OEt2 in water (Additional file 10) and line broadening through quadrupolar relaxation due to loss of tetrahedral symmetry.
Spectra were processed with 0.5 Hz exponential line broadening in VnmrJ; relaxation analysis was performed within that program.
Paramagnetic transition metal ions, present as production residuals, can cause line broadening through paramagnetic relaxation enhancement, even within the range of allowed quantities [ 62].
The results for these thermorheologically complex blends also indicate that, although the incorporation of the polymeric plasticizers substantially reduces the Tg of the blend, the distribution of relaxation times is broadened.
Also in this case, superficial analysis failed, since it turned out that the shape of the α-relaxation was artificially broadened, predicting the false position of the JG process.
The presence of crystalline order, besides the nematic mesophase, broadens this relaxation.
