Soy phosphate ester polyol made by the hydrolysis of epoxidized soybean oil proved to be effective for the preparation of polyurethane by reaction with an isocyanate. The material obtained is a thermoset, with glass transition temperature of 52°C and physico-mechanical properties limiting its use as a rigid resin. We demonstrated that the combination with a highly functionalized petrosynthetic polyether polyol helps to improve the physico-mechanical properties (dynamic, flexural, impact, heat deflection). Conversely, thermal stability at temperature close to 200°C is reduced. This process of hybridization of polyols, i.e. use of mixture of petrosynthetic and biosynthetic chemicals, is a valuable tool towards the production of materials having acceptable performance, low cost, environmentally friendly and representing a way to reduce the consumption of petroleum in the chemical industry, while helping increase the use of natural renewable products.
展开▼
