Bierwirth, S. Peter; Honorio, Gabriel; Gainaru, Catalin; Boehmer, Roland published the artcile< Linear and nonlinear shear studies reveal supramolecular responses in supercooled monohydroxy alcohols with faint dielectric signatures>, Category: alcohols-buliding-blocks, the main research area is supercooled monohydroxy alc dielec loss.
Monohydroxy alcs. (MAs) with Me and hydroxyl side groups attached to the same carbon atom in the alkyl backbone can display very weak structural and supramol. dielec. relaxation processes when probed in the regime of small elec. fields. This can render their separation and assignment difficult in the pure liquids When mixing with bromoalkanes, a faint Debye-like process can be resolved dielec. for 4-methyl-4-heptanol. To achieve a separation of structural and supramol. processes in pure 4-methyl-4-heptanol and 3-methyl-3-heptanol, mech. experiments are carried out in the linear-response regime as well as using medium-angle oscillatory shear amplitudes. It is demonstrated that first-order and third-order nonlinear mech. effects allow for a clear identification of supramol. viscoelastic modes even for alcs. in which they leave only a weak signature in the linear-response shear modulus. Addnl., the nonlinear rheol. behavior of 2-ethyl-1-hexanol is studied, revealing that its linearly detected terminal mode does not coincide with that revealed beyond the linear-response regime. This finding contrasts with those for the other MAs studied in this work. (c) 2019 American Institute of Physics.
Journal of Chemical Physics published new progress about Dielectric loss. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Category: alcohols-buliding-blocks.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts