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Well-dispersed poly...
Well-dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent-free procedure in bulk
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- Kupka, Vojtech (författare)
- Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.
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- Zhou, Qi (författare)
- KTH,Wallenberg Wood Science Center
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- Ansari, Farhan (författare)
- KTH,Fiber- och polymerteknologi
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- Tang, Hu (författare)
- KTH,Skolan för kemi, bioteknologi och hälsa (CBH),Albanova VinnExcellence Center for Protein Technology, ProNova
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- Slouf, Miroslav (författare)
- Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague, Czech Republic.
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- Vojtova, Lucy (författare)
- Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.;SCITEG As, U Vodarny 2965-2, Brno 61600, Czech Republic.
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- Berglund, Lars, 1979- (författare)
- KTH,Wallenberg Wood Science Center
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- Jancar, Josef (författare)
- Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.;SCITEG As, U Vodarny 2965-2, Brno 61600, Czech Republic.
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Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic Wallenberg Wood Science Center (creator_code:org_t)
- 2018-02
- 2019
- Engelska.
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Ingår i: Polymer Composites. - : WILEY. - 0272-8397 .- 1548-0569. ; 40, s. E456-E465
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
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