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Themed collection Chemistry for Covalent Adaptable Polymer Networks

13 items
Review Article

Polymer actuators based on covalent adaptable networks

Advances in polymer actuators containing covalent adaptable networks (CANs) are summarized and discussed in this review.

Graphical abstract: Polymer actuators based on covalent adaptable networks
Communication

Self-healing behaviour of furan–maleimide poly(ionic liquid) covalent adaptable networks

Recovery of mechanical (tensile testing) and conductive (chronoamperometric cycling) properties was observed for PIL networks containing thermoreversible furan–maleimide crosslinks.

Graphical abstract: Self-healing behaviour of furan–maleimide poly(ionic liquid) covalent adaptable networks
Paper

Influence of the polymer matrix on the viscoelastic behaviour of vitrimers

Vitrimers, an emerging field of research, in which still many fundamental aspects of material design remain to be explored. Here, we systematically explore the effect of the choice of the matrix on a dynamic exchange reaction in a polymer network.

Graphical abstract: Influence of the polymer matrix on the viscoelastic behaviour of vitrimers
Paper

Cross-linker control of vitrimer flow

The rate of stress relaxation in a vitrimer can be modulated by changing solely the structure of the cross-linker electrophile.

Graphical abstract: Cross-linker control of vitrimer flow
Paper

Mixed mechanisms of bond exchange in covalent adaptable networks: monitoring the contribution of reversible exchange and reversible addition in thiol–succinic anhydride dynamic networks

Thioester anhydride reversible addition and thiol–thioester reversible exchange are discussed as two competing mechanisms dictating the dynamic response in thiol–succinic anhydride dynamic networks.

Graphical abstract: Mixed mechanisms of bond exchange in covalent adaptable networks: monitoring the contribution of reversible exchange and reversible addition in thiol–succinic anhydride dynamic networks
Paper

Functionalization of amine-cured epoxy resins by boronic acids based on dynamic dioxazaborocane formation

Functionalization of epoxy resins after curing was performed based on dynamic dioxazaborocane formation between intrinsic diethanolamine units in amine-cured epoxy resins and boronic acid modifiers.

Graphical abstract: Functionalization of amine-cured epoxy resins by boronic acids based on dynamic dioxazaborocane formation
Paper

Mechanically robust and reprocessable imine exchange networks from modular polyester pre-polymers

Covalent adaptable networks (CANs) containing dynamic imine cross-links impart recyclability to thermoset materials, and the distribution of these cross-links greatly affects their observed thermomechanical properties.

Graphical abstract: Mechanically robust and reprocessable imine exchange networks from modular polyester pre-polymers
Paper

Solvent processable and recyclable covalent adaptable organogels based on dynamic trans-esterification chemistry: separation of toluene from azeotropic mixtures

New covalent adaptable networks (CANs) possessing processability and recyclability to monomers are desirable as an alternative to traditional plastics to address plastic waste-related issues.

Graphical abstract: Solvent processable and recyclable covalent adaptable organogels based on dynamic trans-esterification chemistry: separation of toluene from azeotropic mixtures
Paper

Structural tuning of polycaprolactone based thermadapt shape memory polymer

Polycaprolactone based thermadapt shape memory polymers with precisely controlled structures allow tunable shape reconfigurability.

Graphical abstract: Structural tuning of polycaprolactone based thermadapt shape memory polymer
Paper

Epoxy vitrimers incorporating physical crosslinks produced by self-association of alkyl chains

Vitrimers synthesized from epoxy-carboxylic acid-alkylamine (Cn) formulations exhibit tunable mechanical properties and stress relaxation without using external catalysts.

Graphical abstract: Epoxy vitrimers incorporating physical crosslinks produced by self-association of alkyl chains
Paper

Tuning the mechanical and dynamic properties of imine bond crosslinked elastomeric vitrimers by manipulating the crosslinking degree

Imine bond crosslinked networks with tunable mechanical and dynamic properties are prepared by varying the precursor molecular weight and network crosslinking degree.

Graphical abstract: Tuning the mechanical and dynamic properties of imine bond crosslinked elastomeric vitrimers by manipulating the crosslinking degree
Paper

Dual-dynamic interpenetrated networks tuned through macromolecular architecture

Controlled polymerization is used to make well defined polymers that are assembled into dynamic interpenetrated network materials. Self-healing, toughness and stress relaxation are imparted into the material through the dynamic linkages.

Graphical abstract: Dual-dynamic interpenetrated networks tuned through macromolecular architecture
Paper

Combining polybenzoxazines and polybutadienes via simultaneous inverse and direct vulcanization for flexible and recyclable thermosets by polysulfide dynamic bonding

Simultaneous inverse and direct vulcanization of a benzoxazine and a polybutadiene gave recyclable films through dynamic S–S bonding.

Graphical abstract: Combining polybenzoxazines and polybutadienes via simultaneous inverse and direct vulcanization for flexible and recyclable thermosets by polysulfide dynamic bonding
13 items

About this collection

This special issue, Guest Edited by Filip Du Prez (Ghent University), Christopher Bowman (University of Colorado) and Julia Kalow (Northwestern University) presents the latest developments in new dynamic covalent chemistry strategies and derived materials for covalent adaptable networks and related dynamic polymeric network materials, such as vitrimers.

Articles will be added to the collection as they are published.

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