Dielectric spectroscopy on aqueous solutions of some nitrogen-containing linear hydrocarbon polymers

Kaatze, U.; Göttmann, O.; Podbielski, R.; Pottel, R.

doi:10.1016/0167-7322(88)80044-8

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…Hence the possibility to distinguish conductive and dielectric models is better than for PEO based electrolytes. A few studies on impedance analysis of PEI aqueous solutions 27 and PEI electrolytes [28][29][30] have been done before but a detailed investigation of the ionic relaxation appears not to have been carried out. A PEI based electrolyte has also been applied in an electrochromic device.…”

Section: Introductionmentioning

confidence: 99%

Ionic relaxation in polyethyleneimine-lithium bis(trifluoromethylsulfonyl) imide polymer electrolytes

Pehlivan

Marsal

Georén

et al. 2010

Journal of Applied Physics

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Polymer electrolytes containing polyethyleneimine and different concentrations of lithium bis͑trifluoromethylsulfonyl͒ imide were investigated by impedance spectroscopy at different temperatures. Two equivalent circuit models were compared for the bulk impedance response. The first one includes a conductive Havriliak-Negami ͑HN͒ element which represents ionic conductivity and ion pair relaxation in a single process, and the second model includes a dielectric HN element, which represents ion pair relaxation, in parallel with ion conductivity. Comparison of the two circuit models showed that the quality of the fit was similar and in some cases better for the conductive model. The experimental data follow the Barton-Nakajima-Namikawa relation, which relates the ion conductivity and the parameters of the relaxation. This indicates that ion conductivity and ion pair relaxation are two parts of the same process and should be described by the conductive model.

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Section: Introductionmentioning

confidence: 99%

Ionic relaxation in polyethyleneimine-lithium bis(trifluoromethylsulfonyl) imide polymer electrolytes

Pehlivan

Marsal

Georén

et al. 2010

Journal of Applied Physics

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“…For this system, as for ideal solutions, the molar enthalpy of dilution is near-zero or at least well below the thermal energy, but the AA molecules are hydrated, and this fact influences the entropy of the system. Notice that, according to ref , in dilute aqueous solutions, amides are hydrated. PAA does not show any specific behavior.…”

Section: Discussionmentioning

confidence: 94%

“…The mechanism of amide-water interaction has long been the subject of intensive study (e.g., refs [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The interest in this subject is mainly driven by the facts that amides, along with amines, are of primary importance in living matter and that wetted monomer and polymer amides have many applications in chemical practice.…”

Section: Introductionmentioning

confidence: 99%

Comparison Study of the Acrylamide−Water and Polyacrylamide−Water Systems: Differential Heat Effects, Kinetics, and Mechanisms of Drying and Vapor-Phase Wetting

et al. 2001

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Differential data on the thermodynamics and kinetics of water-vapor sorption and desorption in the acrylamide−water system at room temperature and 0 < n < 74 (n is the number of sorbed water molecules per amido group) are obtained. Water-vapor sorption from air of 100% humidity appears to be limitless. The magnitude of the differential molar enthalpy of sorption is about 25 kJ/mol for n ≪ 1, passes through a maximum of 42 kJ/mol in the vicinity of n = 1 and a minimum of 24 kJ/mol in the vicinity of n = 2, and then approaches the level of the heat of water-vapor condensation on the pure water surface. The probability for a water molecule to desorb from the system into vacuum per unit time is observed to monotonically increase with n up to n = 44, with a small minimum for n = 15−17. In the system, a slight tendency for clathratization reveals itself in nonmonotonic dependences of ΔH(n) and P(n), but no stable clathratization, as such, is identified. The results are compared with the corresponding data for the polyacrylamide−water system. The mechanisms of the sorption−desorption process are discussed.

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“…The hydration states of polyelectrolyte water mixtures have been widely studied using various methods, such as molecular dynamics simulation, 24 ultrasonic a Centre for Terahertz Waves and College of Precision Instrument and Optoeletronics Engineering, Tianjin University, Tinajin 300072, People's Republic of China. E-mail: lyliuma@tju.edu.cn, tianzhen@tju.edu.cn b Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction absorption spectroscopy, 25 GHz and THz dielectric relaxation spectroscopy, [26][27][28] nuclear magnetic resonance, 29 Fourier transform infrared spectroscopy, 30 and X-ray diffraction. 31 In our previous work, the relaxation properties of water molecules hydrating amphiphilic hyperbranched polyglycerols (HPG) were analyzed using GHz and THz dielectric relaxation spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

“…This dispersionless background makes the well-defined synthetic polymer a good example to study the dielectric relaxation dynamics of water molecules hydrating amphiphilic groups. The hydration states of polyelectrolyte water mixtures have been widely studied using various methods, such as molecular dynamics simulation, 24 ultrasonic absorption spectroscopy, 25 GHz and THz dielectric relaxation spectroscopy, 26–28 nuclear magnetic resonance, 29 Fourier transform infrared spectroscopy, 30 and X-ray diffraction. 31…”

Section: Introductionmentioning

confidence: 99%

Water dynamics in the hydration shell of hyper-branched poly-ethylenimine

Zhang

Yan

Wang

et al. 2022

Phys. Chem. Chem. Phys.

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Dielectric spectroscopy on aqueous solutions of some nitrogen-containing linear hydrocarbon polymers

Cited by 8 publications

References 19 publications

Ionic relaxation in polyethyleneimine-lithium bis(trifluoromethylsulfonyl) imide polymer electrolytes

Ionic relaxation in polyethyleneimine-lithium bis(trifluoromethylsulfonyl) imide polymer electrolytes

Comparison Study of the Acrylamide−Water and Polyacrylamide−Water Systems: Differential Heat Effects, Kinetics, and Mechanisms of Drying and Vapor-Phase Wetting

Water dynamics in the hydration shell of hyper-branched poly-ethylenimine

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