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Safe and Environmentally Friendly Methods of Making Materials More Flame Retardant

Summary

Researchers at Purdue University have developed a safe, environmentally responsible method for transforming carbon-containing materials into flame retardants via phosphorylation. These natural products, lignin, tannic acid, and natural oils, are all potential renewable feedstock; researchers were able to chemically modify them to enhance char formation and increase their compatibility with polymer systems, while exhibiting none of the safety issues faced with brominated flame retardants. Modified products have been characterized using techniques, such as nuclear magnetic resonance spectroscopy, thermogravimetric analysis, and fourier transform infrared spectroscopy, to determine the extent of modification and chemical changes during char formation and decomposition; the products' flame retardant characteristics can be determined using limited oxygen index and vertical burn tests.

Technology Benefits

Enhanced char formation, translating to increased flame retardant propertyEnvironmentally responsible

Technology Application

Flame retardant polymer development

Detailed Technology Description

Jeffrey YoungbloodPurdue Materials Engineering

Countries

United States

Application No.

None

Country/Region

USA

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