Biobased Polyurethanes from Plant oil-based Polyols: Physico-mechanical Properties Evaluations

摘要

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℃ 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℃ 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.