Synthesis of Epoxidized Rubber Seed Oil

Abstract

The liquefaction of cellulose in the presence of phenol without or with sulfuric acid as catalyst was investigated. The liquefied products were characterized by GC/MS and FTIR. Results showed that reaction temperature and reaction time had obvious effects on liquefaction of cellulose. Sulfuric acid showed an excellent catalytic degradation. The chemical compositions of the liquefied products produced using sulfuric acid catalyst or not were almost identical, and the majority of the identified liquefied products were methylene bisphenol and its isomers. During the process of liquefaction, the degradation of cellulose and condensation polymerization occurred at the same time. The last liquefied products were greatly dependent on the reaction conditions.

Production of Epoxidized Rubber Seed Oil via Lipase-Catalyzed Epoxidation

“…The results of this epoxidation reaction study showed that the C-O stretching peak intensity increased as the temperature increased, indicating an increase in the rate of the epoxidation reaction. This result corresponds to the epoxy value increasing with the temperature increasing from 40 ℃ to 65 ℃ reported by Huang et al [38]. This research suggests that at a temperature of 65 °C, the oxirane ring formation reaction is most efficient.…”

“…Nevertheless, the signal of olefinic protons decreases when increasing the reaction time from 6 h to 24 h. It is caused by dominant epoxidation in the system, initially due to more hydrogen peroxide content. The ring-opening reaction of the epoxidized oil takes place in the later period [38].…”

“…It occurred undesired oxirane-ring opening reactions of epoxidized corn oil, which produced more water as a by-product inducing the hydrolysis of the epoxy group after a reaction time of 10 h [49]. Huang et al 2011 showed that as the reaction time increased, the ring-opening reaction of epoxidized oil became more likely[38]. However, the optimal reaction time of ERSO for production in this research is 18 h due to the highest epoxidation percentage of 81.63 %, in which the content of loading Novozym 435 is less than their work.Table11The epoxidation percentage of ERSO1, EROS6, EROS7, and ERSO8 as a result of different reaction times.…”