WebJan 26, 2024 · Among the dynamic covalent bonds, imine bond, also called Schiff base, can participate in both dissociative and associative pathways. This induces potential for chemical recyclability, thermal reprocessability and self-healing. This review presents an overview of the current research front of biobased thermosets fabricated by Schiff base … WebThere are two basic types of covalent bonds: polar and nonpolar. In a polar covalent bond, the electrons are unequally shared by the atoms and spend more time close to …
Dynamic Covalent Bonds in Polymeric Materials - Chakma - 201…
WebDec 15, 2010 · The dynamic covalent bond is a class of bond that can break and reform under the appropriate conditions without irreversible side reactions. This allows for the … WebIt is appealing to develop dynamic polymer systems with multifunctionl properties. Herein, we report a polyurethane elastomer with a dynamic covalent polymer network containing a radically exchangeable 2-arylindane-l,3-dione dimer as thermally sensitive and reversible cross-links. In addition, the carbolong complex, an excellent photothermal agent, is … dr chris clohesy
Dynamic covalent chemistry - PubMed
WebApr 10, 2024 · Covalent organic frameworks (COFs), constructed from organic monomers (termed nodes and linkers) via covalent bonds, are crystalline polymers with permanent porosity 1,2.Their synthesis typically ... WebShape memory polymer (SMP)-based 4D printing combines the advantages of SMP and 3D printing to form active materials with delicate structure. Nowadays, studies of SMP-based 4D printing materials mainly focus on cross-linked (meth)acrylate of which the permanent shape cannot be changed for their covalent linkage, limiting the usage of 4D printing materials. … WebMay 1, 2024 · With the abundant chemistry of dynamic bonds, it is expected that more anti-fatigue amorphous hydrogels and other amorphous polymer networks will be designed and synthesized. 2. Proposed mechanism of anti-fatigue. For simplicity, consider a single-network hydrogel of amorphous covalent polymer network. dr chris clayton