<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Two series of novel thermoplastic poly(carbonate-urethane) elastomers, with different hard-segment content (30 - 60 wt %), were synthesized by melt polymerization from poly(hexane-1,6-diyl carbonate) diol of M<sub>n</sub> = 2000 as a soft segment, 4,4'-diphenylmethane diisocyanate (MDI) or hexane-1,6-diyl diisocyanate (HDI) and 6,6'-[methylenebis(1,4-phenylenemethylenethio)]dihexan-1-ol as a chain extender. The structure and basic properties of the polymers were examined by Fourier transform infrared spectroscopy, X-ray diffraction analysis, atomic force microscopy, differential scanning calorimetry, thermogravimetric analysis, Shore hardness and tensile tests. The resulting TPUs were colorless polymers, showing almost amorphous structures. The MDI-based TPUs showed higher tensile strengths (up to 21.3 MPa vs. 15.8 MPa) and elongations at break (up to 550% vs. 425%), but poorer low-temperature properties than the HDI-based analogs.</p></abstract>

Two series of novel thermoplastic poly(carbonate-urethane) elastomers, with different hard-segment content (30 - 60 wt %), were synthesized by melt polymerization from poly(hexane-1,6-diyl carbonate) diol of Mn = 2000 as a soft segment, 4,4'-diphenylmethane diisocyanate (MDI) or hexane-1,6-diyl diisocyanate (HDI) and 6,6'-[methylenebis(1,4-phenylenemethylenethio)]dihexan-1-ol as a chain extender. The structure and basic properties of the polymers were examined by Fourier transform infrared spectroscopy, X-ray diffraction analysis, atomic force microscopy, differential scanning calorimetry, thermogravimetric analysis, Shore hardness and tensile tests. The resulting TPUs were colorless polymers, showing almost amorphous structures. The MDI-based TPUs showed higher tensile strengths (up to 21.3 MPa vs. 15.8 MPa) and elongations at break (up to 550% vs. 425%), but poorer low-temperature properties than the HDI-based analogs.

New thermoplastic poly(carbonate-urethane) elastomers

Department of Polymer Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, ul. Gliniana 33, 20-614 Lublin, Poland

Polish Journal of Chemical Technology

{"article-title":"New thermoplastic poly(carbonate-urethane) elastomers"}

Two series of novel thermoplastic poly(carbonate-urethane) elastomers, with different hard-segment content (30 - 60 wt %), were synthesized by melt...

New thermoplastic poly(carbonate-urethane) elastomers

Published Online: Mar 17, 2011

Page range: 23 - 30

DOI: https://doi.org/10.2478/v10026-011-0005-x

Keywords
thermoplastic polyurethane elastomers, poly(hexane-1,6-diyl carbonate) diol, 4,4'-diphenylmethane diisocyanate, hexane-1,6-diyl diisocyanate, thermal and mechanical properties, atomic force microscopy

This content is open access.

New thermoplastic poly(carbonate-urethane) elastomers

Published Online: Mar 17, 2011

Page range: 23 - 30

DOI: https://doi.org/10.2478/v10026-011-0005-x

Keywordsthermoplastic polyurethane elastomers, poly(hexane-1,6-diyl carbonate) diol, 4,4'-diphenylmethane diisocyanate, hexane-1,6-diyl diisocyanate, thermal and mechanical properties, atomic force microscopy

This content is open access.

Keywords
thermoplastic polyurethane elastomers, poly(hexane-1,6-diyl carbonate) diol, 4,4'-diphenylmethane diisocyanate, hexane-1,6-diyl diisocyanate, thermal and mechanical properties, atomic force microscopy