A study was conducted to introduce a vegetable oil-lactate hybrid monomer for synthesis of high Tg polyurethanes (PU). The conjugation of epoxidized soybean oil (ESO) was investigated, which was prepared by epoxidation of soybean oil using lipase as catalyst, with lactic acid (LA) through ring-opening reaction. It was demonstrated that 1000 mg of ESO and 600 mg of LA were charged in a reactor that contained a stirrer bar. The reactor was purged with nitrogen for around 15 minutes to remove the air and it was sealed. The reaction was allowed to continue for 6 hours and the final reaction mixture was washed with water to remove unreacted chemicals till the pH value of the washing solution turned to 7.0 and the desired product, lactic acid-epoxidized soybean oil (LA-ESO) was recovered by evaporating the water off under reduced pressure.
|Original language||English (US)|
|Number of pages||8|
|Journal||Journal of Polymer Science, Part A: Polymer Chemistry|
|State||Published - Jan 1 2010|