Dr. Michielsen received his Ph.D. in Chemistry from the University of Chicago in 1979 working with Prof. Stuart A. Rice. He did a Post-Doctoral Fellowship in the Chemistry Department at Stanford University under the direction of Prof. Robert Pecora. He then joined DuPont at the Experimental Station in the Polymer Products Department in 1980. In 1990, he moved to DuPont Fibers. Then in 1995, he joined the faculty of the School of Textile and Fiber Engineering at the Georgia Institute of Technology. In 2004, he moved to North Carolina State University in the Department of Textile and Apparel Technology and Management and then in 2008, he moved to the Department of Textile Engineering, Chemistry and Science in the College of Textiles, where he resides today.
Prof. Michielsen invented an antiviral fabric with collaborators at Emory University (Atlanta, GA) and formed a spinoff company, LaamScience, where he served on the Board of Directors and Chairman.
His current research involves bloodstain pattern analysis BPA on textiles (forensics) and surface modification of fibers for a wide range of applications including medical textiles, superhydrophobic materials, antimicrobial textiles, and enzyme immobilized textiles. Dr. Michielsen emphasizes the theoretical understanding of physical and chemical phenomena on textiles combined with experimental verification and extension of these theories. His work on BPA is aimed at understanding how wetting of textiles with blood alters the stain patterns. This requires a detailed knowledge of the properties and construction of the textiles, wetting and wicking, and the behavior of blood in contact with surfaces.
In this work, we apply porcine blood to textiles and monitor the change in shape of the stain over time. For this we simultaneously video the stain on the front and back of the textile and then use image processing to extract size and shape over time. We also carefully characterize or construct the fabric and yarn construction. This allows us to obtain a detailed picture of the interaction of blood with the textile.
Surface modification of polymers, nanotechnology, smart polymers, structure/property/process relationships, polymer physics. In particular, we try to covalently bond 1-10 nm thick coatings onto polymeric surfaces to introduce new functionality. My research group has developed antimicrobial treatments, and superhydrophobic materials (with water contact angles as high as 178 degrees). We have increased surface electrical charges, dye-sites, and stain resistance. We are currently working to attach enzymes to the surface in an attempt to create nanofactories. Of particular interest is the interplay of materials science with polymer physics using polymer chemistry to impart the desired functionality.
Ph. D. Physical Chemistry, University of Chicago, 1979.
B.S. Chemistry, State University of New York at Stony Brook, 1972.
TT 105 Introduction to Textiles
TT 341 Knitted Fabric Technology
TMS 762 Physical Properties of Fiber Forming Polymers, Fibers and Fibrous Structures
- Chang JYM, Michielsen S. (2016) Effect of mounting method and backing material on bloodstain patterns of drip stains on textiles. International J of Legal Medicine, DOI 10:1007/s00414-015-1314-z.
- Kim JR, Michielsen S. (2015) Photodynamic antifungal activities of nanostructured fabrics grafted with rose bengal and phloxine B against Aspergillus fumigatus. J Appl. Poly Sci, DOI: 10.1002/app.42216.
- Kim JR, Michielsen S. (2015) Photodynamic activity of nanostructured fabrics grafted with xanthene and thiazine dyes against opportunistic fungi. J Photochem Photobio B: Biology 150: 50–59.
- Zhang W, Vinueza NR, Datta P, Michielsen S. (2015) Functional dye as a comonomer in a water-soluble polymer. J Poly Sci Part A: Poly Chem 53: 1594-1599.
- Wang, Y., Michielsen, S., Lee, H.J., (2013). Capillary Profiles of Liquid Bridges between Two Parallel Surfaces. Langmuir , 29 , 11028-11037.
Wetting Behavior of Single Fibers
Surface Modification of Polymers
Enzyme Immobilization on Fiber Surfaces
Bloodstain Pattern Analysis on Textile Substrates
Transfer of Bloodstains from Fabric to Fabric
The Fiber Society – Treasurer
American Chemical Society
American Physical Society