The viscosity of glycerol

Ferreira, Abel G.M.; Egas, Ana P. V.; Fonseca, I.M.A.; Costa, Ana Cláudia Oliveira; Abreu, Danielly C.; Lobo, Lélio Q.

doi:10.1016/j.jct.2017.05.042

Cited by 89 publications

(44 citation statements)

References 77 publications

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“…So far, the BSCNF model has been applied to wide class of glass‐forming substances. [ 18,29–32 ] Now this model has been found to be very effective in the study of the structural relaxation. For instance, it was shown [ 19 ] that the BSCNF model provides a theoretical background to the Vogel–Fulcher–Tammann (VFT) viscosity equation, which is a well‐known expression given as η = η 0 exp[ B VFT /( T – T 0 )].…”

Section: Ac Phenomena In the Structural Relaxation And The Electricalmentioning

confidence: 99%

Arrhenius Crossover Phenomena and Ionic Conductivity in Ionic Glass‐Forming Liquids

Aniya

Ikeda

2020

Physica Status Solidi (b)

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Herein, the relation between the Arrhenius crossover (AC) behaviors in the structural relaxation and the electrical conductivity relaxation is explored in terms of the Bond Strength–Coordination Number Fluctuation (BSCNF) model developed by the authors. For the ionic glass‐forming liquids and solution examined, Ca2K3(NO3)7, Ca2Rb3(NO3)7, ZBLAN20 and (LiCl)0.16(H2O)0.84, the electric conductivity at high temperature resembles the behavior of the high‐temperature structural relaxation. This mutual relationship suggests a similar origin of the AC behaviors for both, structural and electrical relaxation. The difference between them is reflected in the different temperatures that demarcate the AC behaviors. The implication of this difference to the occurrence of the high ionic conduction via the decoupling mechanism is discussed in terms of the BSCNF model and the fractional Stokes–Einstein law.

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Section: Ac Phenomena In the Structural Relaxation And The Electricalmentioning

confidence: 99%

Arrhenius Crossover Phenomena and Ionic Conductivity in Ionic Glass‐Forming Liquids

Aniya

Ikeda

2020

Physica Status Solidi (b)

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“…The viscosity of glycerol is larger than that of NMP because of the hydrogen bonding (see also the review of Ferreira et al . and the data in Fig.…”

Section: Resultsmentioning

confidence: 94%

Fabrication of membranes of polyethersulfone and poly(N‐vinyl pyrrolidone): influence of glycerol on processing and transport properties

Handge

Gronwald²,

Weber³

et al. 2020

Polymer International

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In this study, we focus on membranes of polyethersulfone and poly(N-vinyl pyrrolidone) and elucidate the influence of composition on the rheological, diffusion and precipitation properties of solutions which are used for membrane preparation via a non-solvent-induced phase separation process. The low-molar-mass component of the solution is a mixture of the solvent N-methyl-2-pyrrolidone and the non-solvent glycerol. Cloud point, viscosity and diffusion measurements as well as precipitation experiments were performed in order to achieve a comprehensive understanding of the time dependence of the precipitation process. The addition of glycerol yields an increase of viscosity and a stronger tendency for demixing. The enhanced tendency for demixing causes a more rapid precipitation process. The average relaxation time of the solution as a function of glycerol concentration follows a similar trend to its viscosity. The increase of viscosity is associated with the increase of the monomeric friction coefficient. Two diffusive processes with clearly separated time scales appear in dynamic light scattering experiments in the presence of glycerol. This phenomenon is discussed taking into account the phase behaviour of the solution and the quality of the solvent. The addition of glycerol yields a lower pure water permeance whereas the molecular weight cut-off is not altered in the ultrafiltration range.

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“…The physicochemical properties of crude glycerol are compared with commercial pure glycerol in Table 2. a-e refer to Refs [24][25][26][27][28] in that order while f-h refer to [6,29,30] accordingly.…”

Section: Experimental Methods and Considerationsmentioning

confidence: 99%

Flame characteristics of glycerol/methanol blends in a swirl-stabilised gas turbine burner

Agwu

Valera‐Medina

Katrašnik

2021

Fuel

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The viscosity of glycerol

Cited by 89 publications

References 77 publications

Arrhenius Crossover Phenomena and Ionic Conductivity in Ionic Glass‐Forming Liquids

Arrhenius Crossover Phenomena and Ionic Conductivity in Ionic Glass‐Forming Liquids

Fabrication of membranes of polyethersulfone and poly(N‐vinyl pyrrolidone): influence of glycerol on processing and transport properties

Flame characteristics of glycerol/methanol blends in a swirl-stabilised gas turbine burner

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