Well-dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent-free procedure in bulk

Kupka, VojtechBrno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic. (författare)

QC 20220215
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.

Zhou, QiKTH,Wallenberg Wood Science Center(Swepub:kth)u15a66y4 (författare)
Ansari, FarhanKTH,Fiber- och polymerteknologi(Swepub:kth)u1aevkrt (författare)
Tang, HuKTH,Skolan för kemi, bioteknologi och hälsa (CBH),Albanova VinnExcellence Center for Protein Technology, ProNova(Swepub:kth)u1cimni9 (författare)
Slouf, MiroslavAcad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague, Czech Republic. (författare)
Vojtova, LucyBrno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.;SCITEG As, U Vodarny 2965-2, Brno 61600, Czech Republic. (författare)
Berglund, Lars,1979-KTH,Wallenberg Wood Science Center(Swepub:kth)u1wqz3r1 (författare)
Jancar, JosefBrno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.;SCITEG As, U Vodarny 2965-2, Brno 61600, Czech Republic. (författare)
Brno Univ Technol, CEITEC Cent European Inst Technol, Brno 61200, Czech Republic.Wallenberg Wood Science Center (creator_code:org_t)

Av författaren/redakt...: Kupka, Vojtech; Zhou, Qi; Ansari, Farhan; Tang, Hu; Slouf, Miroslav; Vojtova, Lucy; visa fler...; Berglund, Lars, ...; Jancar, Josef; visa färre...

Om ämnet

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.