Polyurethanes (PUs) are a versatile class of polymers which have found significant use in a wide range of applications including coatings, adhesives, foams, textiles, sealants and medical devices. They possess many desirable physical and mechanical properties such has weatherability, mar resistance, chemical resistance and high strength or toughness. Recently, more advanced and elegant molecular structures have been incorporated into PUs including various supramolecular units like multiple hydrogen-bond forming units, metal-ligand bonds, or ionic groups. These groups have strong impacts on morphology and the resulting physical and mechanical properties and often confer multifunctionality to the material such as self-healing behavior. We have prepared segmented polyurethanes using either 2,6-bis(<i>N</i>-alkyl-benzimidazolyl)pyridine (BIP) type ligands or carbocationic aminocyclopropeniums (ACPs) as chain extenders. The ligand containing polymers were crosslinked with various Zn(II) salts while the influence of different types of counterion on properties was investigated. A second series of ACP PUs with a wide range of structural diversity were also prepared and characterized.

Metal and ion containing polyurethanes

254th National Meeting (2017)

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