@Article{jrm.2019.00045,
AUTHOR = {Azam Sardari, Ali Asghar Sabbagh Alvani, Seyed Reza Ghaffarian},
TITLE = {Synthesis and Characterization of Novel Castor Oil-Based Polyol for Potential Applications in Coatings},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {7},
YEAR = {2019},
NUMBER = {1},
PAGES = {31--40},
URL = {http://www.techscience.com/jrm/v7n1/30518},
ISSN = {2164-6341},
ABSTRACT = {In this study, three sorts of polyols were successfully synthesized from castor oil using a Dean-Stark quick, eco-friendly and high-efficiency method. For this purpose, castor oil was epoxidized in the presence of two types of catalysts including γ-alumina and formic acid, named as ECOAl and ECOF, respectively. Epoxidized castor oils were then characterized by use of hydrogen nuclear magnetic resonance (H-NMR) and oxirane oxygen content analysis. The relative percentages of conversion double bond to oxirane were obtained 96% and 74% for ECOAl and ECOF, respectively. Ring opening reaction of ECOAl was performed by two types of saponified castor oil as well as castor oil in a system equipped with Dean–Stark apparatus. The synthesized polyols were characterized by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), viscometer and OH number evaluation. The material obtained in this research is a candidate to be intended in synthesis of polyurethane for coating applications.},
DOI = {10.32604/jrm.2019.00045}
}