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We report the preparation of tough double-network (DN) metallopolymer antibacterial hydrogels through dual polymerization. DN hydrogels are composed of the first network of cationic cobaltocenium polyelectrolytes enabled using ring-opening metathesis polymerization and the second network of polymers prepared using radical polymerization. These DN hydrogels exhibited a very high compressive stress (up to ∼120 MPa). The introduction of boronic acid and ionic conjugation with β-lactam antibiotics endowed the hydrogels with high antimicrobial efficacy against both Grampositive and Gram-negative bacteria.

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Reprocessable and biobased thermosets are prepared from two renewable feedstocks, lignin and polyamine (Priamine 1071). Lignin is oxidized to produce polycarbonyl and further reacts with polyamine to form a crosslinked network of imines. The thermoset materials are formed under heat and pressure in the absence of any catalysts. The mechanical strength and thermal properties of thermosets are tunable by changing feedstock ratios. The dynamic imine crosslinks can be associatively reformed.

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