Well‐dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent‐free procedure in bulk
Source abstract
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. POLYM. COMPOS., 40:E456–E465, 2019. © 2018 Society of Plastics Engineers
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Research context
OpenAlex topics: Advanced Cellulose Research Studies · Lignin and Wood Chemistry · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
CEITEC – Central European Institute of Technology, Brno University of Technology Brno 612 00 Czech Republic
School of Biotechnology Royal Institute of Technology (KTH), AlbaNova University Centre Stockholm 106 91 Sweden
Wallenberg Wood Science Center, Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
Department of Fibre and Polymer Technology Royal Institute of Technology (KTH) Stockholm 100 44 Sweden
Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic Prague 162 06 Czech Republic
SCITEG a.s., U vodarny 2965/2 Brno 616 00 Czech Republic
Funding
Ministry of Education, Youth and Sports
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