The effect of reaction parameters like the amount of reagents, catalyst, temperature and time on a polyol synthesis was studied through the hydroxyl and oxirane functionality of product. Moreover, the impact of the parameters on the selectivity of catalyst was determined by comparing a polyol yield to an epoxide ring opening yield. When the hydroxylation reaction was carried out with ESO:H2O molar ratio of 1:15; in 8 wt.% of H2SO4; at temperature of 70o C and in 5 hours, the polyol yield of reaction was and the hydroxyl functionality of polyol reached to . | VNU Journal of Science: Natural Sciences and Technology, Vol. 33, No. 4 (2017) 113-119 The Synthesis of Bio-Polyol from Epoxidized Soybean Oil Nguyen Thi Thuy*, Vu Minh Duc, Nguyen Thanh Liem Polymer centre, Hanoi University of Science and Technology, 1 Dai Co Viet, Hanoi, Vietnam Received 20 July 2017 Revised 09 October 2017; Accepted 19 October 2017 Abstract: Hydroxyl and oxirane functionality were calculated from molecular weight and hydroxyl or oxirane-oxygen content of polyol. The effect of reaction parameters like the amount of reagents, catalyst, temperature and time on a polyol synthesis was studied through the hydroxyl and oxirane functionality of product. Moreover, the impact of the parameters on the selectivity of catalyst was determined by comparing a polyol yield to an epoxide ring opening yield. When the hydroxylation reaction was carried out with ESO:H2O molar ratio of 1:15; in 8 wt.% of H2SO4; at temperature of 70oC and in 5 hours, the polyol yield of reaction was and the hydroxyl functionality of polyol reached to . Keywords: Epoxidized soybean oil, biopolyol, nucleophile, epoxide ring-opening. 1. Introduction reactions while the electron rich oxygen atom can afford an electronphilic reaction site [2]. The reagent and catalyst for the hydroxylation epoxidized vegetable oil are diversified. In 2012, Synvain Caillol investigated to synthesis of new polyester polyols from epoxidized vegetable oils and bio-based acids [3]. In 2013, Norhayati Mohd Noor carried out the synthesis of palm-based polyols by using catalyst of K10 montmorillorit [4]. In 2015, Jing Zhang synthesized polyols from ring-opening epoxidized soybean oil reaction by a Castor Oil-based Fatty Diol [5]. Water is considered to be the source of available, inexpensive and completely environmentally friendly materials. Using water as reactive agents for the modified process of epoxidized soybean oil into biopolyol will bring many benefits. This work studied the influence of .
