Isocyanates are important to many products we take for granted – from paint to spandex running shorts. But the high reactivity for which the chemical group is valued also makes this compound toxic when breathed.
Sharlene R. Williams of Springfield, Ohio, a graduate student in chemistry at Virginia Tech, has created macromolecules with comparable reactivity using soy-based chemistry. She will present the research at the 233rd national meeting of the American Chemical Society in Chicago March 25-29.
“We are looking for alternative chemistry that offers the advantage of reactivity but is not toxic, and is cheaper than petroleum based chemistry,” said Tim Long, professor of chemistry at Virginia Tech. “We are looking at bio-feedstocks such as soy-based triglycerides and peptides in combination with novel chemistry.”
Williams has demonstrated that a process called the “Michael addition” induces reactivity in soy proteins, and also improves mechanical properties of the bio-based polymer.
“Agriculture-based polymers may offer comparable performance to petroleum-based polymers,” said Long. “They offer strength and elasticity. We think the Michael addition reaction offers the opportunity to address elastomer technology challenges with safer reactivity.”
Williams will present “Michael addition of acetoacetate functionalized oligomers: From biomedical applications to novel elastomers” (Poly 237) at 2:45 p.m. Tuesday, March 27, in McCormick Place South room S504A. Authors are Long, Williams, Brian D. Mather of Albuquerque, a Ph.D. candidate in chemical engineering and student in the Macromolecules and Interfaces Institute at Virginia Tech, and Kevin M. Miller of Rohm and Haas Company.
Susan Trulove | EurekAlert!
The birth of a new protein
20.10.2017 | University of Arizona
Building New Moss Factories
20.10.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research