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New thermoplastic poly(ether-urethane) elastomers were synthesized by one-step melt poly addition from poly(oxytetramethylene)diol of M ¯ n = 2000 g mol−1 as soft segment, 1,1′-methanediylbis(4-isocyanatocyclohexane) (Desmodur W®), and 2,2′-methylenebis[(4,1-phenylene)methylenesulfanediyl]diethanol or 6,6′-methylenebis[(4,1-phenylene)methylenesulfanediyl]dihexan-1-ol as unconventional chain extenders, and 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid as an ionic chain extender. The structure of polymers was examined by attenuated total reflection Fourier-transform infrared. Moreover, their thermal behavior, Shore A/D hardness, mechanical properties, and optical and adhesive properties were determined. Addition of carboxyl groups to polymer resulted, generally, in increased transparency, hardness, tensile strength and adhesive strength on copper polymer junction and decreased thermal stability, refractive indexes, elongation at break, and modulus of elasticity. [ABSTRACT FROM AUTHOR]

New thermoplastic poly(ether-urethane)s and poly(carbonate-urethane)s were synthesized by a one-step melt polymerization from poly(oxytetramethylene) diol (PTMO) and poly(hexane-1,6-diyl carbonate) diol (PHCD) as soft segments, 4,4′-diphenylmethane diisocyanate, and 2,2′-[methylenebis(1,4-phenylenemethylenethio)]diethanol, 3,3′-[methylenebis(1,4-phenylenemethylenethio)]dipropan-1-ol or 6,6′-[methylenebis(1,4-phenylenemethylenethio)]dihexan-1-ol as unconventional chain extenders. The effects of the kind and amount of the polymer diol and chain extender used on the structure and properties of the polymers were studied. The polymers were examined by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction analysis, atomic force microscopy, differential scanning calorimetry, thermogravimetric analysis (TGA), TGA coupled with FTIR spectroscopy, and Shore hardness and tensile testing. The obtained high-molecular-weight polymers showed elastomeric or plastic properties. Generally, the PTMO-based polymers exhibited significantly lower glass-transition temperatures (up to −48.1 vs −1.4°C), a higher degree of microphase separation, and ordering in hard-segment domains in comparison with the corresponding PHCD-based ones. Moreover, it was observed that the polymers with the PTMO soft segments showed poorer tensile strengths (up to 36.5 vs 59.6 MPa) but higher elongations at break. All of the polymers exhibited a relatively good thermal stability. Their temperatures of 1% mass loss were in the range 270-320°C. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 [ABSTRACT FROM AUTHOR]