WSU Researchers Develop Plant Oil-based Polyurethane Used in Hoses, Sealants & more
PULLMAN, Wash. -- Researchers have developed a new way to use plant oils like olive and linseed oil to create polyurethane, a plastic material used in everything from foam insulation panels to tires, hoses and sealants. Polyurethane is extremely tough and corrosion- and wear-resistant, but researchers would like a more environmentally friendly alternative to the petroleum-based product. About 14 million tons of polyurethane was produced in 2010, and production is expected to increase by almost 30 percent by 2016.
While there are already some polyurethanes made from plant materials, Kessler’s research group developed a new method that uses vegetable oils to create materials with a wide variety of flexibility, stiffness and shapes. Plant oils are inexpensive, readily available, and renewable and can be genetically engineered. In the study, the researchers made polyurethane using olive, canola, grape seed, linseed and castor oils. While other researchers have struggled with using petroleum-based solvents, the WSU researchers, working with colleagues from Iowa State and from Cairo universities, didn’t use solvents or a catalyst in their production.
To make polyurethane, manufacturers combine two types of chemical compounds in a reaction. One of the chemicals is a polyol, which is a compound with multiple hydroxyl functional groups that are available for reaction. Some oils, like linseed oil, have five or six reactive sites, making the material stiffer. Others, such as olive oil, have fewer reactive sites, making the material more flexible. “What’s new about this is specifically the way we make the polyols,” said Kessler, who compared the process to building with Legos. “It is the same concept with these chemical groups. They click together and form a chemical bond. “The novelty of this particular work is that these polyurethanes are using a new chemistry made by a combination of castor oil fatty acid and modified vegetable oils,” he said.
Kessler, who is director of the Center for Bioplastics and Biocomposites, hopes that the method is appeal
本站所有信息與內容，版權歸原作者所有。網站中部分新聞、文章來源于網絡或會員供稿，如讀者對作品版權有疑議，請及時與我們聯系，電話：025-85303363 QQ：2402955403。文章僅代表作者本人的觀點，與本網站立場無關。轉載本站的內容，請務必注明"來源：林中祥膠粘劑技術信息網（m.423344.com）".
加載中...
