Novel waterborne poly(urethane‐urea)/silica nanocomposites

Published on Jun 19, 2020in Polymer Composites3.171
· DOI :10.1002/PC.25690
Milena Špírková31
Estimated H-index: 31
Jelena Pavličević12
Estimated H-index: 12
(University of Novi Sad)
+ 3 AuthorsLibuše Brožová13
Estimated H-index: 13
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4 Authors (Stefan Kaskel, ..., Nigel A. Seaton)
#1Jelena Pavličević (University of Novi Sad)H-Index: 12
#2Milena ŠpírkováH-Index: 31
Last. Bojana Ikonić (University of Novi Sad)H-Index: 8
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In this work, aliphatic starting reactants were used to prepare a series of polycarbonate-based polyurethane (PC-PU) nanocomposite films with a low amount of titanium dioxide (TiO2) nanoparticles (0.5, 1.0 and 2.0%) by one-step technique. The influence of nanoparticles on the structure and hydrogen bonding, as well as the microphase and topography of the obtained hybrid materials was followed by Fourier transform infrared spectroscopy, Atomic force microscopy and Scanning electron microscopy cou...
#1Milena ŠpírkováH-Index: 31
#2Libuše BrožováH-Index: 13
Last. Jelena Pavličević (University of Novi Sad)H-Index: 12
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#1Elena Boccardi (FAU: University of Erlangen-Nuremberg)H-Index: 12
#2Liliana Liverani (FAU: University of Erlangen-Nuremberg)H-Index: 16
Last. Aldo R. Boccaccini (FAU: University of Erlangen-Nuremberg)H-Index: 118
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#1Magdalena Rogulska (UMCS: Maria Curie-Skłodowska University)H-Index: 12
Thermoplastic polyurethane elastomers (TPUs) containing aliphatic polycarbonate soft segments and hard segments formed by 1,1′-methanediylbis(4-isocyanatocyclohexane) or 1,6-diisocyanatohexane and a combination of two chain extenders, i.e., 2,2′-[sulfanediylbis(benzene-1,4-diyloxy)]diethanol and 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid (DMPA), were synthesized in a one-step catalyzed melt polyaddition process. The obtained colorless, transparent and high-molar-mass materials, which dif...
#1Meng-En Li (Sichuan University)H-Index: 4
#2Shui-Xiu Wang (Sichuan University)H-Index: 6
Last. Yu-Zhong Wang (Sichuan University)H-Index: 100
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Abstract Polyurethane foam (PUF) is widely used in building insulation field but highly flammable. In an effort to develop an efficient way to reduce flammability and smoke release of PUF without sacrificing its inherent merits, a novel strategy has been proposed to decorate silica aerogels onto the surface of PUF to fabricate hierarchically porous SiO2/PUF composites. Due to the unique hierarchically porous structure, the resultant composites showed superior thermal insulation with a lower ther...
#1Milena ŠpírkováH-Index: 31
#2Jiří HodanH-Index: 12
Last. Magdalena Serkis-Rodzeń ('QUB': Queen's University Belfast)H-Index: 3
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Abstract A series of novel waterborne polyurethane (PU) dispersions was prepared from a polycarbonate-based macrodiol, 1,6-diisocyanatohexane, 2,2-bis(hydroxymethyl) propionic acid (DMPA) and triethylamine. Different macrodiol-to-DMPA (diol) ratios and different excesses of isocyanate were used, and the typically used chain-extension step was omitted. Systematic measurements of the particle size revealed that PU particles have diameters lower than 100 nm at diol ratios of 1:1 and 1:2, while a di...
#2Milena ŠpírkováH-Index: 31
Last. Miroslav Štěpánek (Charles University in Prague)H-Index: 17
view all 4 authors...
For the first time, stable water-borne polyurethane dispersions (PUDs) leading to mechanically strong polyurethane (PU) coatings were prepared without any chain extender. Elimination of this step and using of water-crosslinking gives promising applications of PUDs as biomaterials and production on an industrial scale. The PU system consists of polycarbonate macrodiol (PCD), (2,2-bis(hydroxymethyl)) propionic acid (DMPA), 1,6-diisocyanatohexane (HDI) and N,N-diethylethanamine (TEA). Fourier trans...
Abstract Novel waterborne polyurethane/silica nanocomposites were prepared via blending of two aqueous dispersions. Polyurethane water dispersion (PUD) was synthesized from polycarbonate diol (PC), 1,6-diisocyanatohexane (HDI) and butane-1,4-diol (BD) in order to provide solely linear character of PU chain. Two types of commercial colloidal silica, Ludox AS and Ludox TMA, differing in the size, shape and type of counter ions were used. The nanocomposites were made from negatively charged PUD and...
#1Magdalena SerkisH-Index: 8
#2Milena ŠpírkováH-Index: 31
Last. Radovan Bureš (SAV: Slovak Academy of Sciences)H-Index: 18
view all 5 authors...
AbstractPolyurethane/silica nanocomposites were prepared by solution blending of polyurethane water dispersion (PUD) based on polycarbonate macrodiol with colloidal silica aqueous sol LUDOX TMA. Because of mixing PUDs made from linear polyurethane with the nanofiller, only physical polymer/filler type of interface formed by hydrogen bonds was obtained. As a result the materials were possible to reuse after dissolution in acetone followed by dispersion in water. The effect of colloidal silica con...
Stable water-borne polyurethane dispersions (PUDs) were prepared from bifunctional aliphatic polycarbonate-based macrodiol, 2,2-bis(hydroxymethyl)propionic acid (DMPA), 1,6-diisocyanatohexane, 1,4-butanediol (BD), and triethylamine. Water-borne dispersion particles are thus solely formed from self-assembled linear PU chains. Both PUDs and PUD-based films were characterized with regards to the concentration of DMPA (ionic species content) and BD (hard-segment content). Average particle size of PU...
Cited By1
#1Vladimir Bershtein (Ioffe Institute)H-Index: 19
#2Olga GrigoryevaH-Index: 13
Last. Alexander FainleibH-Index: 15
view all 4 authors...
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