Abstract
1 min readThis chapter focuses on heterogeneous network design in dynamic covalent polymer networks (especially rubbers). The design, performance, and mechanisms of heterogeneous networks from the perspectives of inhomogeneous crosslinking and hybrid multi-networks are briefly reviewed. The exchangeable functions of dynamic covalent bonds (DCBs) enable unique properties of the heterogeneous crosslinked polymer networks. Based on characteristics such as micro-phase separation, interlocking, or interconnection between the multiple sub-networks crosslinked by DCBs, the relative independence and synergistic effect between the heterogeneous networks are exploited to achieve the robustness, functionalization, and melt-processing ability of DCB crosslinked elastomers. This new approach is expected to open a new avenue for intelligent application and sustainable development of polymer networks.
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