Beata Dudziec was participating in a 8th edition of International Seminar on Modern Polymeric Materials for Environmental Applications that took place in Cracow, May 17-19, 2023, organized by Cracow University of Technology. This Symposium was devoted to prof. Jan Pielichowski to celebrate the 85th anniversary of his birthday. It was an interesting event with materials chemists and specialists in polymeric systems. Most of all it was a Symposium with scientists who have a practical approach to solving application problems in materials chemistry.