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Composites prepared from the waterborne polyurethane cationomers-modified graphene. Part I. Synthesis, structure, and physicochemical properties
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SYSNO ASEP 0442122 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Composites prepared from the waterborne polyurethane cationomers-modified graphene. Part I. Synthesis, structure, and physicochemical properties Author(s) Król, P. (PL)
Król, B. (PL)
Pielichowska, K. (PL)
Špírková, Milena (UMCH-V) RID, ORCIDSource Title Colloid and Polymer Science - ISSN 0303-402X
Roč. 293, č. 2 (2015), s. 421-431Number of pages 11 s. Language eng - English Country DE - Germany Keywords polyurethane films ; surface structure ; AFM microscopy Subject RIV CD - Macromolecular Chemistry R&D Projects GA13-06700S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000348784200009 DOI 10.1007/s00396-014-3417-3 Annotation In the reaction of 4,4′-methylenebis(phenyl isocyanate), polycaprolactone diol, and N-methyldiethanolamine, they were synthesized aqueous dispersions of polyurethane cationomers, from which films were prepared after adding 0–2 wt% graphene. In order to obtain nanocomposites, graphene was previously noncovalent functionalized in tetrahydrofurane in the field of ultrasound. The chemical structure and the morphology of obtained nanocomposites were analyzed by IR spectroscopy, atomic force microscopy (AFM), and differential scanning calorimetry (DSC) microcalorimetry methods. It was found that the presence of graphene results in increased thermal and mechanical strength of received polymer films and contributes to the increase in hydrophobicity of generally hydrophilic coatings prepared from waterborne polyurethane cationomers. Based on received results, possible interactions between graphene and phase structure of polyurethane cationomers were discussed. Relating to the so far described applications of graphene for the modification of polyurethanes, the novelty of this work is the concept of incorporation of graphene particles to polyurethane cationomer chains exclusively through a simple noncovalent functionalization and to investigate the effect of graphene on the properties obtained in this way of thin polyurethane film. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2016
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