An online international scientific conference was held on September 27-28, 2021: 7th Young Polymer Scientists Conference and Short Course. The conference was organized under the auspices of the Rector of Lodz University of Technology (TUL), Dean of Faculty of Chemistry (at TUL) and European Polymer Federation (EPF). The topics of this event covered polymer science from fundamentals to applications: synthesis of polymers and macromolecular architectures, characterization, processing and theory of polymers and nanocomposites.