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Researchers Develop Thin Polymer Coating for Furniture to Prevent the Spread of Flames

Published on 2013-05-06. Author : SpecialChem

A thin polymer coating on foam used in furniture can prevent the spread of flames, said Dr. Jaime Grunlan, the Gulf Oil/Thomas A. Dietz Career Development Professor at Texas A&M university.

Furniture cushions are made of flammable polyurethane foam that, when burned, puddles at high temperatures, a quality called the "melt-dripping" effect that further spreads fires. Furniture foam must be treated with flame-retardant chemicals that are known to be harmful to human health and the environment. The U.S. National Fire Protection Association has estimated than upholstery and bedding were the first items ignited in an average of 17,300 fires annually, resulting in 871 civilian deaths and millions of dollars in property loss.

Grunlan said that the coating he and his research team have developed consists of a sulfur-based polymer and chitosan, a carbohydrate polymer found in crustacean shells. This new coating could be an environmentally friendly alternative to the toxic chlorine- and bromine-based flame retardants used today in furniture foam.

"This new flame retardant nanocoating functions by generating a 'gas blanket to starve the surface of burning object of oxygen," Grunlan said. "No oxygen means no fire."

Dr. Galina Laufer, a recent graduate from Grunlan's research team, published these results in ACS Macro Letters ("Exceptionally Flame Retardant Sulfur-based Multilayer Nanocoating for Polyurethane Prepared from Aqueous Polyelectrolyte Solutions").

Grunlan is an associate professor in the Department of Mechanical Engineering, with joint appointments in the interdisciplinary Department of Materials Science and Engineering and the Artie McFerrin Department of Chemical Engineering. He joined the Texas A&M Engineering faculty in 2004 after receiving a bachelor's degree from North Dakota State University and a Ph.D. from the University of Minnesota. In 2007, he received the prestigious National Science Foundation (NSF) CAREER award for his research into controlling the microstructure of high aspect ratio nanoparticles (e.g., carbon nanotubes) using stimuli-responsive polymers.

In 2012, he received the L.E. Scriven Young Investigator Award from the International Society of Coating Science and Technology "for innovative and high-impact research into coating methods and materials for barrier, flame resistance and electronic applications." He also received the 2010 Carl Dahlquist Award from the Pressure Sensitive Tape Council.

About Texas A&M University

Engineering has been a part of Texas A&M University since its inception in 1876 as the Agricultural and Mechanical College of Texas. Today, the Dwight Look College of Engineering is the largest college on the Texas A&M campus with more than 350 faculty members and more than 11,000 engineering students in 22 different programs in our 12 departments. Their mission is to serve Texas, the nation and the global community by providing engineering graduates who are well founded in engineering fundamentals, instilled with the highest standards of professional and ethical behavior, and prepared to meet the complex technical challenges of society.

Source: Texas A&M University


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