Azam Sardari1,2, Ali Asghar Sabbagh Alvani1,2,3,*, Seyed Reza Ghaffarian1,2
Journal of Renewable Materials, Vol.7, No.1, pp. 31-40, 2019, DOI:10.32604/jrm.2019.00045
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 More >
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