Refractometric study of systems water-poly(ethylene glycol) for preparation and characterization of Au nanoparticles dispersion

Refractive index of binary systems water-poly(ethylene glycol) of different molecular weights at several temperatures from 283.15 to 363.15K was measured. Refractive index strongly depends on molecular weight, mole fraction and temperature. Experimental data were correlated by four parameters’ relat...

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Bibliographic Details
Published inArabian journal of chemistry Vol. 12; no. 8; pp. 5019 - 5027
Main Authors Kolská, Zdeňka, Valha, Petr, Slepička, Petr, Švorčík, Václav
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2019
Elsevier
Subjects
Au nanoparticles
Data correlation
Dynamic light scattering
Refractive index
Temperature dependence
Water-poly(ethylene glycol)
Temperature dependence
Water-poly(ethylene glycol)
Au nanoparticles
Dynamic light scattering
Refractive index
Data correlation
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Summary:Refractive index of binary systems water-poly(ethylene glycol) of different molecular weights at several temperatures from 283.15 to 363.15K was measured. Refractive index strongly depends on molecular weight, mole fraction and temperature. Experimental data were correlated by four parameters’ relationship for dependence of refractive index on mole fraction of poly(ethylene glycol) and by three parameters’ relationship for dependence on molecular weight of poly(ethylene glycol). Obtained data can serve as an input data for subsequent study of these binary systems and especially for study of colloidal systems of metal nanoparticles in dispersion surrounding consisting of water and poly(ethylene glycol). Especially these data on refractive index are important for determination of nanoparticle size and zeta potential by dynamic light scattering. Obtained data on refractive index have been employed for correct and accurate determination of nanoparticle size and zeta potential. The size of Au nanoparticles was determined by dynamic light scattering. For comparison of this determination also a transmission electron microscopy and UV–vis spectroscopy have been employed in very good agreement. The optical properties of Au nanoparticles’ colloidal solutions were analyzed with UV–vis spectroscopy and showed a significant absorption peak maximum at 530nm.
ISSN:1878-5352
1878-5379
DOI:10.1016/j.arabjc.2016.11.006