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Polymer Bulletin
Erschienen in: Polymer Bulletin 5/2012

01.03.2012 | Original Paper

Effect of silica nanoparticles on structure and properties of waterborne UV-curable polyurethane nanocomposites

Erschienen in: Polymer Bulletin | Ausgabe 5/2012

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Abstract

UV-curable waterborne polyurethane (WUPU)/silica nanocomposites were prepared using various silica by phase-inversion emulsification method. TEM examinations of nanostructured films indicated that the organic modified nanosilica was well dispersed in the WUPU matrix, while the acid and alkaline silica formed much less compact, or densely aggregated structure. DMA analysis demonstrated that the WUPU/silica nanocomposite films had a broadening of the tanδ peak and shifted to higher temperature. The WUPU/silica nanocomposite films displayed enhanced storage modulus, Shore A hardness, tensile strength without sacrificing high elongation at break compared to that of the pure WUPU film. The resulting nanocomposite films are possibly interesting for the generation of waterborne UV-curable transparent coatings with scratch-resistance.
Vorheriger Artikel Functional polymers for photovoltaic devices
Nächster Artikel Adsorption of [meso-tetrakis(4-sulfonatophenyl)porphyrinato]oxovanadate(IV)(4–) onto chitosan in aqueous solution

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Metadaten
Titel
Effect of silica nanoparticles on structure and properties of waterborne UV-curable polyurethane nanocomposites
Publikationsdatum
01.03.2012
Erschienen in
Polymer Bulletin / Ausgabe 5/2012
Print ISSN: 0170-0839
Elektronische ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-011-0689-3

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