Featured Research

from universities, journals, and other organizations

Tires Made From Trees: Better, Cheaper, More Fuel Efficient

Date:
August 5, 2009
Source:
Oregon State University
Summary:
Automobile owners around the world may some day soon be driving on tires that are partly made out of trees -- which could cost less, perform better and save on fuel and energy.

OSU doctoral student Wen Bai develops rubber composites in an OSU laboratory using a new technology that incorporates microcrystalline cellulose – an approach that may lead to automobile tires which cost less, perform better and produce improved vehicle mileage.
Credit: Image courtesy of Oregon State University

Automobile owners around the world may some day soon be driving on tires that are partly made out of trees – which could cost less, perform better and save on fuel and energy.

Wood science researchers at Oregon State University have made some surprising findings about the potential of microcrystalline cellulose – a product that can be made easily from almost any type of plant fibers – to partially replace silica as a reinforcing filler in the manufacture of rubber tires.

A new study suggests that this approach might decrease the energy required to produce the tire, reduce costs, and better resist heat buildup. Early tests indicate that such products would have comparable traction on cold or wet pavement, be just as strong, and provide even higher fuel efficiency than traditional tires in hot weather.

"We were surprised at how favorable the results were for the use of this material," said Kaichang Li, an associate professor of wood science and engineering in the OSU College of Forestry, who conducted this research with graduate student Wen Bai.

"This could lead to a new generation of automotive tire technology, one of the first fundamental changes to come around in a long time," Li said.

Cellulose fiber has been used for some time as reinforcement in some types of rubber and automotive products, such as belts, hoses and insulation – but never in tires, where the preferred fillers are carbon black and silica. Carbon black, however, is made from increasingly expensive oil, and the processing of silica is energy-intensive. Both products are very dense and reduce the fuel efficiency of automobiles.

In the search for new types of reinforcing fillers that are inexpensive, easily available, light and renewable, OSU experts turned to microcrystalline cellulose – a micrometer-sized type of crystalline cellulose with an extremely well-organized structure. It is produced in a low-cost process of acid hydrolysis 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.


Story Source:

The above story is based on materials provided by Oregon State University. Note: Materials may be edited for content and length.


Cite This Page:

Oregon State University. "Tires Made From Trees: Better, Cheaper, More Fuel Efficient." ScienceDaily. ScienceDaily, 5 August 2009. <www.sciencedaily.com/releases/2009/07/090721122846.htm>.
Oregon State University. (2009, August 5). Tires Made From Trees: Better, Cheaper, More Fuel Efficient. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2009/07/090721122846.htm
Oregon State University. "Tires Made From Trees: Better, Cheaper, More Fuel Efficient." ScienceDaily. www.sciencedaily.com/releases/2009/07/090721122846.htm (accessed July 31, 2014).

Share This




More Earth & Climate News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Big Waves In Arctic Ocean Threaten Polar Ice

Big Waves In Arctic Ocean Threaten Polar Ice

Newsy (July 30, 2014) Big waves in parts of the Arctic Ocean are unprecedented, mainly because they used to be covered in ice. Video provided by Newsy
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com
Amid Drought, UCLA Sees Only Water

Amid Drought, UCLA Sees Only Water

AP (July 30, 2014) A ruptured 93-year-old water main left the UCLA campus awash in 8 million gallons of water in the middle of California's worst drought in decades. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



      Save/Print:
      Share:

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile: iPhone Android Web
      Follow: Facebook Twitter Google+
      Subscribe: RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins