Figure 15.

DDN incorporating DA cycloadducts and UPy units as dynamic crosslinkers [39]. (a) Synthesis of a dual dynamic interpenetrating networks (IPN) through sequential polymerization. Each subnetwork contains solely one type of crosslinker (left). Synthesis of an SN containing both types of crosslinkers via a single step copolymerization (right). (b) Tensile properties of the IPN and the SN. (c) Fracture energies of both networks. The IPN generally displays superior mechanical properties than the SN. Reprinted (adapted) with permission from Reference [39]. Copyright (2017) American Chemical Society.