Poly(urethaneamideimide) (PUAI) copolymers were obtained by several methods of synthesis. Solution viscosity and mechanical properties of the polymer foils were measured. The PUAI with different contents of hard segments were investigated by DMTA and thermogravimetry. The stability of PUAI in contact with water and n-hexane was examined by measuring mechanical properties and pH of the extracts and with IR spectroscopy of the dry residues of the extracts.
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