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Bu öğeden alıntı yapmak, öğeye bağlanmak için bu tanımlayıcıyı kullanınız: http://hdl.handle.net/11452/26679
Başlık: Adsorption and dielectric properties of poly(1-vinylimidazole) on sepiolite
Yazarlar: Tekin, Nalan
Kaya, A. Uğur
Esmer, Kadir
Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Kimya Bölümü.
Kara, Ali
AAG-6271-2019
7102824859
Anahtar kelimeler: Chemistry
Materials science
Mineralogy
Adsorption poly(1 vinylimidazole)
Sepiolite
Electrical conductivity, dielectric properties
Aqueous-solution
Dye
Kinetics
Surfaces
Behavior
Silica
Polyvinylimidazole
Sorption
Removal
Model
Electric conductivity
Ionic strength
Permittivity
Ac conductivity
Electrical conductivity
Electrophorotic mobility
Experimental data
Freundlich models
Interface interaction
Isotherm data
Langmuir isotherm models
Poly(1vinylimidazole)
Pure polymers
Second order kinetics
Separation factors
Thermodynamic parameter
Adsorption
Aqueous solution
Concentration (composition)
Dielectric property
Electrokinesis
Element mobility
Enthalpy
Entropy
Experimental mineralogy
Gibbs free energy
Ionic composition
Isotherm
Parameterization
pH
Polymer
Sepiolite
Temperature effect
Thermodynamics
Yayın Tarihi: Mar-2012
Yayıncı: Elsevier
Atıf: Tekin, N. vd. (2012). "Adsorption and dielectric properties of poly(1-vinylimidazole) on sepiolite". Applied Clay Science, 57, 32-38.
Özet: The adsorption of poly(1-vinylimidazole) (PVI) onto sepiolite from aqueous solutions was investigated as a function of some parameters such as pH, ionic strength, and temperature. The adsorption of PVI was increased with increasing pH and with decreasing ionic strength and temperature. The Langmuir isotherm model fitted the isotherm data better than the Freundlich model. The electrophorotic mobility of sepiolite dispersions was measured at different PVI concentrations and pH. The thermodynamic parameters Gibbs free energy, enthalpy, and entropy were evaluated. The dimensionless separation factor (R-L.) revealed that sepiolite can be used for adsorption of PVI from aqueous solutions. The second-order kinetics equation best fitted the experimental data. Dielectric properties of sepiolite coated with PVI have been also investigated. The sample with adsorbed PVI at 25 degrees C has the maximum the AC conductivity and the charge carriers can move easily in comparison with other samples. The real permittivities of the PVI-adsorbed samples are quite high in comparison with those of the pure polymer as a result of interface interactions.
URI: https://doi.org/10.1016/j.clay.2011.12.007
https://www.sciencedirect.com/science/article/pii/S0169131711004133
http://hdl.handle.net/11452/26679
ISSN: 0169-1317
Koleksiyonlarda Görünür:Scopus
Web of Science

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