Structure and properties of polycarbonate diol‐based thermoplastic polyurethanes with copolymerized HMDI / MDI hard segments
Aiming at the unbalanced performance and limited application scenarios of neat 4,4′‐methylenediphenyl diisocyanate (MDI) and hydrogenated MDI (HMDI)‐based polycarbonate diol (PCDL) thermoplastic polyurethane (TPU), a series of TPUs with copolymerized HMDI/MDI hard segments were fabricated via a semi‐prepolymer two‐st...