报告题目：Using Polymer Physics to Solve Industrial Challenges
报告人：Stephen Michielsen 教授
In this seminar, Prof Michielsen will show how he solved three industrial challenges:
1) diffusion of a curing agent,
2) fiber-fiber boundary friction,
3) creating a photodynamic, antiviral facemask capable of killing influenza or COVID viruses.
Diffusion depends on the size of the diffusant and the temperature relative to the glass transition temperature which were modelled to estimate the cure time for a room-temperature resin. For fiber-fiber boundary friction, the most important variables were the excluded volume of the lubricant polymer and the radius of gyration of the fiber substrate polymer. Finally, the antiviral filter mask relied on a “graft-to” polymer to introduce sufficient surface-active moieties to impart effective antiviral activity.
Prof Michielsen obtained his Chemistry Ph.D. from the University of Chicago followed by a Post-Doctoral Fellowship at Stanford University. From there, he joined the DuPont Company in Polymers and subsequently moved to their Fiber’s business. He was recruited by the Georgia Institute of Technology in the School of Polymers, Fibers and Textiles and later moving to the Wilson College of Textiles at North Carolina State University. Recently, he moved to the Royal Melbourne Institute of Technology (RMIT) in their School of Fashion and Textiles. His current research efforts focus on the interaction of liquids with textiles.
Prof. Michielsen spent 15 years in industry and over 25 years in academia. His research is highly multidisciplinary, ranging from small molecule synthesis to chemical and biological agent protection, to wetting and wicking for comfort, and bloodstain pattern analysis. The underlying theme of his research is modifying the surface of fibers and textile construction to obtain the desired properties for textile applications. In these roles, he has partnered with aerospace engineers, molecular modelers, materials scientists, fabric designers, and fashion designers, bringing depth and breadth to his research.