Polyurethane plastics from canola oil. ‘An intensive world-wide effort to develop technology for manufacturing plastics from vegetable oil, rather then petroleum, has led researchers in Canada to a process for making polyurethane (PUR) plastic sheets from canola oil. In a study scheduled for publication in the July 9 issue of ACS’s Biomacromolecules, a monthly journal, Suresh S. Narine and Xiaohua Kong report on the properties of their vegetable-based PUR sheets.
PURs are a versatile group of plastics, widely used in liquid coatings and paints, adhesives, flexible foam in upholstered furniture, building insulation, shoes, and automotive interiors.The PUR sheets were produced with an improved version of a process in which canola oil is treated with ozone to make the chemical raw materials for PUR. Researchers described the process as low-cost without the need for complicated technology, and said that it produces PUR sheets with “excellent” mechanical properties.’
Physical Properties of Polyurethane Plastic Sheets Produced from Polyols from Canola Oil (PDF), Xiaohua Kong and Suresh S. Narine, Biomacromolecules, ASAP Article 10.1021/bm070016i. Abstract excerpt: Polyurethane (PUR) plastic sheets were prepared by reacting polyols synthesized from canola oil with aromatic diphenylmethane diisocyanate. The properties of the material were measured by dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) as well as tensile properties measurements. The effect of stoichiometric balance (i.e., OH/NCO molar ratio) on the final properties was evaluated.