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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, Skolan för kemi, bioteknologi och hälsa (CBH), Centra, Wallenberg Wood Science Center.ORCID-id: 0000-0001-9832-027X
KTH, Skolan för kemi, bioteknologi och hälsa (CBH), Fiber- och polymerteknologi.ORCID-id: 0000-0001-7870-6327
KTH, Skolan för kemi, bioteknologi och hälsa (CBH). Royal Inst Technol KTH, AlbaNova Univ Ctr, Sch Biotechnol, S-10691 Stockholm, Sweden..
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2019 (engelsk)Inngår i: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 40, s. E456-E465Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
WILEY , 2019. Vol. 40, s. E456-E465
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Identifikatorer
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
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QC 20190325

Tilgjengelig fra: 2019-03-25 Laget: 2019-03-25 Sist oppdatert: 2019-03-25bibliografisk kontrollert

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Zhou, QiAnsari, FarhanBerglund, Lars

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