Novel polycarbonate-based polyurethane elastomers: Composition-property relationship

TEM microphotographs of polyurethane elastomers made from polycarbonate diol, hexamethylene diisocyanate and 1,4-butanediol; without any additive (left), and with 1 wt.% of organically modified montmorillonite, Cloisite 15A (right). Hard-segment-domains content was ca. 30 wt.% in both cases.