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  • Kupka, Vojtech, et al. (author)
  • Well-dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent-free procedure in bulk
  • 2019
  • In: Polymer Composites. - : WILEY. - 0272-8397 .- 1548-0569. ; 40, s. E456-E465
  • Journal article (peer-reviewed)abstract
    • Polyurethane (PU) nanocomposites utilizing cellulose nanocrystals (CNCs) as nanofiller and amorphous PU matrix were synthesized in a novel solvent-free bulk process. A green nanofiller, CNCs, was studied as reinforcement and was further modified by grafting poly(ethylene glycol) (PEG) on the CNC surface (CNC-PEG). Transmission electron microscopy revealed an excellent dispersion of the PEGylated CNC nanoparticles in the PU matrix, whereas as-received CNCs formed agglomerates. The results indicated strong improvements in tensile properties with Young's modulus increasing up to 50% and strength up to 25% for both, PU/CNC and PU/CNC-PEG nanocomposites. The enhanced tensile modulus was attributed to stiff particle reinforcement together with an increase in glass transition temperature.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Berglund, Lars, 1979 ... (1)
Ansari, Farhan (1)
Zhou, Qi (1)
Šlouf, Miroslav (1)
Kupka, Vojtech (1)
Tang, Hu (1)
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Vojtova, Lucy (1)
Jancar, Josef (1)
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University
Royal Institute of Technology (1)
Language
English (1)
Research subject (UKÄ/SCB)
Natural sciences (1)
Year
2019 (1)

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