Page 19 - abstract-Book-version-22.10.18

III. EUROPEAN CONFERENCE ON SCIENCE, ART & CULTURE
ECSAC’18 – NORTHERN CYPRUS
Gazimağusa, October12-14, 2018

MODELING OF RHEOLOGICAL BEHAVIOR OF VEGETABLE OILS AND OP-13
VEGETABLE OIL-BASED POLYOLS

Ercan AYDOĞMUŞ* , Fethi KAMIŞLI 1
1
*: Corresponding Author
: Fırat University, Faculty of Engineering, Department of Chemical Engineering, Elazığ – Turkey
1

In this study, rheological behaviors of polyols obtained from vegetable oils and oils were investigated. Depending
on the properties of vegetable oils, viscosities vary depending on the double bonds and molecular weights found in the
structures. In addition to viscosity, the parameters such as shear rate, shear stress and torque vary with temperature.
When polyol is obtained from vegetable oils; the rheological behavior after the epoxidation and hydroxylation
processes is also changing. In other words, fluid behavior changes as molecular structures and molecular weights
change. Economical oils such as canola, sunflower, corn and cotton were preferred in this study. The double bond ratio
of fats is very important in the production of polyols. Epoxidation and hydroxylation were carried out considering
these ratios. After polyol production from vegetable oils, hydroxyl numbers were determined. Examination of the
rheological behavior after the production of polyols for each oil shows the change in the molecular structure. In this
study, Newtonian and non-Newtonian behaviors used in the literature were compared using appropriate models.
Keywords: Modeling, Polyol, Rheology, Vegetable Oil

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