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Tires made from trees -- better, cheaper, more fuel efficient
Date:7/21/2009

lysis using nature's most abundant and sustainable natural polymer cellulose that comprises about 40-50 percent of wood.

In this study, OSU researchers replaced up to about 12 percent of the silica used in conventional tire manufacture. This decreased the amount of energy needed to compound the rubber composite, improved the heat resistance of the product, and retained tensile strength.

Traction is always a key issue with tire performance, and the study showed that the traction of the new product was comparable to existing rubber tire technology in a wet, rainy environment. However, at high temperatures such as in summer, the partial replacement of silica decreased the rolling resistance of the product, which would improve fuel efficiency of rubber tires made with the new approach.

More research is needed to confirm the long-term durability of tires made with partial replacement of silica, Li said. Further commercial development of this technology by a tire manufacturer could be undertaken at any time, he said. The newest findings were just published in a professional journal, Composites Part A: Applied Science and Manufacturing.

Tire manufacturing, a huge industry, could also provide another market for large amounts of Pacific Northwest natural fibers and the jobs and technology needed to process them

This advance is another in a series of significant discoveries in Li's research program at OSU in recent years. He developed a non-toxic adhesive for production of wood composite panels that has dramatically changed that industry, and in 2007 received a Presidential Green Chemistry Challenge Award at the National Academy of Sciences for his work on new, sustainable and environmentally friendly wood products.


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Contact: Kaichang Li
kaichang.li@oregonstate.edu
541-737-8421
Oregon State University
Source:Eurekalert

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