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GRADUATE SEMINAR - "Self-Healing Polymer Composites Based on the Diels-Alder Reaction", by Dr. Amy M. Peterson, Assistant Professor, Department of Chemical Engineering, WPI

Education - Colloquium - WPI Only

Wednesday, February 12, 2014
2:00 PM-3:00 PM

Salisbury Labs
Kinnicut Hall SL 115

Worcester, MA 01609
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Materials that can repair cracks and recover from mechanical failure are advantageous. Because remendable materials both repair and prevent the propagation of cracks on the micro scale, they offer the potential for increased durability, safety, and cost efficiency for many applications. The focus of this work is to understand the kinetic and physical parameters that control thermoreversible Diels-Alder bond formation in different types of healable polymeric systems. Three healing systems have been developed based on the thermoreversible Diels-Alder reaction of furan and maleimide. In one, crack healing of a thermoset was induced by thermally reversible cross-linking of a secondary phase. In another, a furan-functionalized epoxy-amine thermoset were healed with a bismaleimide solution at room temperature and minimal pressure, with significant load recovery possible multiple times. The third system allowed for interfacial healing of glass fiber-reinforced epoxy-amine composites via compatible functionalization of glass fibers and the polymer network. The effects of Diels-Alder reaction kinetics and inherent system mobility on healing efficiency will be discussed. The talk with conclude with an examination of practical considerations and ongoing work related to scale up and technology transfer.

Speaker Bio:
Dr. Amy Peterson joined the faculty of WPI in August 2013. She received her B.S. and Ph.D. degrees from Drexel University in 2007 and 2011 respectively. Her doctoral research was focused on developing self-healing polymer composites using a thermoreversible form of the Diels-Alder reaction. After completing her Ph.D., she moved to Germany for postdoctoral research at the Max Planck Institute of Colloids and Interfaces, where she worked on coatings for titanium implants capable of controlled release of growth factor. Her current research is focused on functional polymer and composite surfaces, particularly for biomedical applications.

Suggested Audiences: College

Phone: 508-831-6405

Last Modified: February 4, 2014 at 3:27 PM

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