Featured Research

from universities, journals, and other organizations

Defatted Soy Flour Eyed As Filler Substitute For Rubber Tires

Date:
January 7, 2009
Source:
U.S. Department of Agriculture
Summary:
In 1941, Henry Ford unveiled a plastic-bodied car whose panels included soybean meal as component. The feat made headlines--and history--but the idea never took off commercially. However, researchers continue to toy with the idea and are now testing soy flour as a "green" filler for tires and other natural rubber products.

New tire. Today's fillers are typically petroleum-based particles called "carbon black." Tire manufacturers use them in rubber to improve tensile strength and wear resistance. But petroleum's many competing uses, rising costs and ties to pollution have rekindled interest in biobased alternatives, especially those derived from homegrown crops like soybeans.
Credit: iStockphoto

In 1941, Henry Ford unveiled a plastic-bodied car whose panels included soybean meal as component. The feat made headlines--and history--but the idea never took off commercially. However, researchers continue to toy with the idea, including Agricultural Research Service (ARS) scientists Lei Jong and Jeffrey Byars, who are testing soy flour as a "green" filler for tires and other natural rubber products.

Today's fillers are typically petroleum-based particles called "carbon black." Tire manufacturers use them in rubber to improve tensile strength and wear resistance. But petroleum's many competing uses, rising costs and ties to pollution have rekindled interest in biobased alternatives, especially those derived from homegrown crops like soybeans.

Soy flour is primarily used in cooking and baking. But Jong and Byars' studies at the ARS Cereal Products and Food Science Research Unit in Peoria, Ill., indicate the flour also could serve as an inexpensive alternative to today's carbon-black tire fillers.

The researchers use defatted soy flour that's been dispersed in water to form aggregates 10 microns in diameter (about 1/1000th of an inch). Then they add the aggregates to rubber latex and freeze-dry the mixture. This causes the aggregates to form a tight interconnecting network through the rubber.

For lab tests, the researchers mold the soy-based rubber into samples and subject them to shearing and other forces. Of particular interest is the "storage modulus," which measures the elasticity of a material. On average, the storage modulus scores of composites containing 30 percent soy flour are 20 times higher than filler-free rubber, but somewhat lower than those reinforced with carbon black.

In addition to testing other biobased filler materials, the researchers are collaborating with rubber manufacturers to further explore the technology.

A report on the research was recently published online in the Journal of Applied Polymer Science.


Story Source:

The above story is based on materials provided by U.S. Department of Agriculture. Note: Materials may be edited for content and length.


Cite This Page:

U.S. Department of Agriculture. "Defatted Soy Flour Eyed As Filler Substitute For Rubber Tires." ScienceDaily. ScienceDaily, 7 January 2009. <www.sciencedaily.com/releases/2008/12/081228195823.htm>.
U.S. Department of Agriculture. (2009, January 7). Defatted Soy Flour Eyed As Filler Substitute For Rubber Tires. ScienceDaily. Retrieved April 23, 2014 from www.sciencedaily.com/releases/2008/12/081228195823.htm
U.S. Department of Agriculture. "Defatted Soy Flour Eyed As Filler Substitute For Rubber Tires." ScienceDaily. www.sciencedaily.com/releases/2008/12/081228195823.htm (accessed April 23, 2014).

Share This



More Plants & Animals News

Wednesday, April 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Leopard Bites Man in India

Raw: Leopard Bites Man in India

AP (Apr. 22, 2014) A leopard caused panic in the city of Chandrapur on Monday when it sprung from the roof of a house and charged at rescue workers. (April 22) Video provided by AP
Powered by NewsLook.com
Iowa College Finds Beauty in Bulldogs

Iowa College Finds Beauty in Bulldogs

AP (Apr. 22, 2014) Drake University hosts 35th annual Beautiful Bulldog Contest. (April 21) Video provided by AP
Powered by NewsLook.com
805-Pound Shark Caught Off The Coast Of Florida

805-Pound Shark Caught Off The Coast Of Florida

Newsy (Apr. 22, 2014) One Florida fisherman caught a 805-pound shark off the coast of Florida earlier this month. Video provided by Newsy
Powered by NewsLook.com
Breakfast Foods Are Getting Pricier

Breakfast Foods Are Getting Pricier

AP (Apr. 21, 2014) Breakfast is now being served with a side of sticker shock. The cost of morning staples like bacon, coffee and orange juice is on the rise because of global supply problems. (April 21) 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