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Preparation and properties of polyamide from amine terminated poly(urethane-urea) oligomers

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Summary

A new class of segmented poly(urethane-urea-amide) (PUUA) block copolymers contained poly(oxytetramethylene) (POTM) were prepared by direct condensation of diacid chloride with amine-terminated poly(urethane-urea) (ATPUU) oligomers. The ATPUUs were prepared from the reaction of NCO-terminated polyurethane prepolymer with different diamines. The PUUAs having reduced viscosities ranged from 0.87 to 1.82 dL/g. These polymers were soluble in various polar solvents and gave transparent, tough, and flexible films by casting from m-cresol The copolymers were studied by utilizing differential scanning calorimetry (DSC), thermogravimetry (TG), and tensile testing.

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Al-Salah, H.A. Preparation and properties of polyamide from amine terminated poly(urethane-urea) oligomers. Polymer Bulletin 26, 169–176 (1991). https://doi.org/10.1007/BF00297522

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