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Synthesis of aniline‐terminated polyethers and resulting polyurethane/polyurea elastomers Part A Polymer chemistry

Sonnenschein, Mark F., Virgili, Justin M., Larive, Matthew Z., Wendt, Benjamin L.
Journal of polymer science 2018 v.56 no.15 pp. 1730-1742
analytical methods, aniline, biological resistance, epoxides, molecular weight, polyamides, polyols, polyurethanes, secondary amines, temperature, tensile strength
Functionalization of polyols with aromatic amines offers a potential route to modify properties of polyurethanes, polyamides, and epoxies. Additionally, aniline termination of polyether backbones provides the opportunity to speed up reactions with isocyanates relative to hydroxyl functionalization and slow down epoxy reactions compared to reactions with primary and secondary amines. In this article, the synthesis, characterization, and physical properties of aniline‐terminated polyols with varying molecular weight, monomer type, and functionality is described. Numerous analytical techniques are employed to track the chemical modification kinetics and the resulting aniline functionalized polyol properties. In addition, synthesis and properties of poly(urethane‐urea) elastomers from several of the modified polyols are presented. The effect of hard segment composition and process temperature on tensile properties, dynamic mechanical properties, phase morphology, and chemical resistance is explored. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2018, 56, 1730–1742