naa a22 4500 510821626 CHVBK 20180411083535.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s11814-013-0139-z doi (NATIONALLICENCE)springer-10.1007/s11814-013-0139-z Study on thermal stability of polyurethane-urea based on polysiloxane and polycaprolactone diols [Elektronische Daten] [Fahimeh Askari, Mehdi Barikani, Mohammad Barmar] Different grades of segmented polyurethane-urea were synthesized through two-step solution polymerization of polydimethylsiloxane (PDMS) and polycaprolactone (PCL) polyols with methylene diphenyl diisocyanate (MDI) and mixture of 1,4-buthanediol and 4,4-methylene bis (3-chloro 2,6-diethylaniline) in toluene/tetra-hydrofuran media. Structural characterization of the synthesized samples was conducted using Fourier transform infra-red spectroscopy. X-ray diffraction, dynamic mechanical thermal analysis, thermal gravimetric analysis, and differential scanning calorimetry techniques were utilized to assess material characteristics. The results showed a relationship between PDMS content and thermal stability, morphology and mechanical properties of the urethane-urea samples. Onset degradation temperature was increased by increasing the PDMS content in the polyurethane backbone where the crystallinity was varied versus PDMS content. Strong interaction established between hard and soft segments resulted in a positive shift in PCL glass transition temperature. Tracking E′, E″ and damping factor in DMTA measurements confirmed the two-phase morphology. Hydrophobicity of polymer surfaces was traced by contact angle measurement. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Stability Thermal nationallicence Polyurethane-urea nationallicence Polydimethylsiloxane nationallicence Polycaprolactone nationallicence Askari Fahimeh Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut Barikani Mehdi Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut Barmar Mohammad Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/11(2013-11-01), 2093-2099 0256-1115 30:11<2093 2013 30 11814 https://doi.org/10.1007/s11814-013-0139-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0139-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Askari Fahimeh Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut NATIONALLICENCE 700 1- Barikani Mehdi Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut NATIONALLICENCE 700 1- Barmar Mohammad Department of Polyurethane, Faculty of Science, Iran Polymer and Petrochemical Institute, P. O. Box 14965-115, Tehran, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/11(2013-11-01), 2093-2099 0256-1115 30:11<2093 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer