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Well-dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent-free procedure in bulk
Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic..
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0001-9832-027X
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.ORCID iD: 0000-0001-7870-6327
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH). Royal Inst Technol KTH, AlbaNova Univ Ctr, Sch Biotechnol, S-10691 Stockholm, Sweden..
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2019 (English)In: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 40, p. E456-E465Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
WILEY , 2019. Vol. 40, p. E456-E465
National Category
Polymer Chemistry
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URN: urn:nbn:se:kth:diva-246291DOI: 10.1002/pc.24748ISI: 000459570800043Scopus ID: 2-s2.0-85041194513OAI: oai:DiVA.org:kth-246291DiVA, id: diva2:1298937
Note

QC 20190325

Available from: 2019-03-25 Created: 2019-03-25 Last updated: 2019-03-25Bibliographically approved

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Zhou, QiAnsari, FarhanBerglund, Lars

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Wallenberg Wood Science CenterFibre- and Polymer TechnologySchool of Engineering Sciences in Chemistry, Biotechnology and Health (CBH)
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