Unperturbed dimensions and the theta temperature of dextran in ethylene glycol solutions

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dc.authorid0000-0003-2493-7570en_US
dc.contributor.authorÇatıker, Efkan
dc.contributor.authorGüner, Ali
dc.date.accessioned2021-06-23T19:17:18Z
dc.date.available2021-06-23T19:17:18Z
dc.date.issued2000
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.description.abstractThe unperturbed molecular dimensions of dextran samples (of different molecular weights) have been evaluated in ethylene glycol solutions from viscosity measurements at 25 degrees C, 30 degrees C, 35 degrees C, 40 degrees C and 45 degrees C. The unperturbed dimension, K-o, has been determined From extrapolation methods. i.e, Kurata-Stockmayer-Fixman (KSF), Berry and Inagaki Suzuki-Kurata (ISK) equations, The hydrodynamic expansion factor, alpha(eta), as well as the unperturbed root-mean-square end-to-end distance, [r(2)](o)(1/2), found for dextran samples in ethylene glycol solutions, indicated that the polymer coils are contracted as the temperature is raised From 25 degrees C to 45 degrees C. The long-range interaction parameter. B, was also evaluated and a significant decrease is found for the dextran/ethylene glycol system between 25 degrees C and 45 degrees C. The theta temperatures, Theta, were determined as 328.53, 328.02 and 325.93 K from the temperature dependence of the interaction parameter, respectively.en_US
dc.identifier.doi10.1016/S0014-3057(99)00299-2
dc.identifier.endpage2146en_US
dc.identifier.issn0014-3057
dc.identifier.issue10en_US
dc.identifier.startpage2143en_US
dc.identifier.urihttps://doi.org/10.1016/S0014-3057(99)00299-2
dc.identifier.urihttps://hdl.handle.net/20.500.12491/5344
dc.identifier.volume36en_US
dc.identifier.wosWOS:000088602200010en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.institutionauthorÇatıker, Efkan
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofEuropean Polymer Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDextranen_US
dc.subjectEthylene Glycolen_US
dc.subjectUnperturbed Dimensionen_US
dc.subjectTheta Temperatureen_US
dc.titleUnperturbed dimensions and the theta temperature of dextran in ethylene glycol solutionsen_US
dc.typeArticleen_US

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