Dutch Polymer Institute 1 article published in JoVE Chemistry The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry Lorenzo Massimo Polgar1,2, Martin van Duin1, Francesco Picchioni1 1Department of Chemical Engineering, University of Groningen, 2Dutch Polymer Institute (DPI) A simple two-step approach involving rubber modification and cross-linking yields fully reworkable, elastic rubber products.