Novel polycarbonate-based polyurethane elastomers: composition–property relationship

0359231 - ÚMCH 2012 RIV GB eng J - Journal Article
Špírková, Milena - Pavličevic, J. - Strachota, Adam - Poreba, Rafal - Bera, O. - Kaprálková, Ludmila - Baldrian, Josef - Šlouf, Miroslav - Lazić, N. - Budinski-Simendic, J.
Novel polycarbonate-based polyurethane elastomers: composition–property relationship.
European Polymer Journal. Roč. 47, č. 5 (2011), s. 959-972. ISSN 0014-3057. E-ISSN 1873-1945
R&D Projects: GA ČR GAP108/10/0195
Institutional research plan: CEZ:AV0Z40500505
Keywords : polyurethane elastomer * polycarbonate diol * montmorillonite
Subject RIV: CD - Macromolecular Chemistry
Impact factor: 2.739, year: 2011

Novel all-aliphatic polycarbonate-based polyurethane (PC-PU) elastomers, as well as PC-PU nanocomposites filled with organic-modified clays were synthesized, characterized and studied. It was found that they have very attractive mechanical properties (e.g., elongation at break between 600% and 800%). The prepared PC-PUs possess a distinctly segmented structure, which is the key prerequisite for their behavior as strong physical rubbery networks. All synthesized materials melt at elevated temperatures (between 110 and 200 °C) and hence can be processed like normal thermoplastics. Besides excellent mechanical properties, the prepared elastomers and their nanocomposites showed an interesting phase behavior (which was studied by combining DMTA and modulated DSC).
Permanent Link: http://hdl.handle.net/11104/0006437