Roghayeh Majdan-Cegincara
Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran
[ 1 ] - Magnetorheological and Volumetric Properties of Starch and Polyethylene Glycol Solutions in the Presence of NiO Nanoparticles
The effect of NiO nanoparticles on the rheological and volumetric properties of dilute solutions of starch-NaOH-H2O, PEG400-PEG2000 and PEG400-PEG6000 were investigated. Achieve this aim requires to prepare the stable nanofluids. Therefore, nanoparticles of NiO were added to these solutions and dispersed by a shaker and an ultrasonic bath for making the homogeneous nanofluids. The UV-Vis spectr...
[ 2 ] - Modeling the Thermodynamic Properties of Solutions Containing Polymer and Electrolyte with New Local Composition Model
A new theory model based on the local composition concept (TNRF-modified NRTL (TNRF-mNRTL) model) was developed to express the short-range contribution of the excess Gibbs energy for the solutions containing polymer and electrolyte. An equation represented the activity coefficient of solvent was derived from the proposed excess Gibbs energy equation. The short-range contribution of interaction ...
[ 3 ] - اثر نانوذره های منیزیم اکسید در ویژگی های حجمی و رئولوژیکی محلول های دارای پلی اتیلن گلیکول
محلولهای همگنی از انحلال پلیمر پلی اتیلن گلیکول (PEG) با جرم مولکولی (g/mol) 2000 و 6000 (PEG2000 و PEG6000) درPEGبا جرم مولکولی (g/mol) 400 (PEG400) تهیه شد؛ ویژگی های رئولوژیکی و دانسیته این محلول ها ...
[ 4 ] - Modeling the Transport and Volumetric Properties of Solutions Containing Polymer and Electrolyte with New Model
A new theoretical model based on the local composition concept (TNRF-mNRTL model) was proposed to express the short-range contribution of the excess Gibbs energy for the solutions containing polymer and electrolyte. This contribution of interaction along with the long-range contribution of interaction (Pitzer-Debye-Hückel equation), configurational entropy of mixing (Flory-Huggins relation)...
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