He received his Ph.D. degree under the supervision of Professor Bogumil Laszkiewicz in Lodz Polytechnic, Poland. Dr. Kotek has recently been a Guest Editor of an issue on polymer fibers for Polymer Reviews. He is also a Coeditor of the Journal of Natural Fibers. His expertise covers synthetic and physical chemistry of fiber and membrane forming polymers (PEN, PET, N6, and cellulose and other poly-carbohydrates) as well as natural fibers. His specific interests are in ring opening polymerization, cyclodepolymerization, as well as melt, wet, dry, gel, and electrospinning.