Detail publikačního výsledku

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

KUPKA, V.; ZHOU, Q.; ANSARI, F.; TANG, H.; ŠLOUF, M.; VOJTOVÁ, L.; BERGLUND, L.; JANČÁŘ, J.

Original Title

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

English Title

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

Type

WoS Article

Original 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.

English 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.

Keywords

Cellulose, Cellulose derivatives, nanocrystals CNC

Key words in English

Cellulose, Cellulose derivatives, nanocrystals CNC

Authors

KUPKA, V.; ZHOU, Q.; ANSARI, F.; TANG, H.; ŠLOUF, M.; VOJTOVÁ, L.; BERGLUND, L.; JANČÁŘ, J.

RIV year

2019

Released

29.01.2019

Publisher

John Wiley and Sons Inc.

ISBN

0272-8397

Periodical

POLYMER COMPOSITES

Volume

40

Number

S1

State

United States of America

Pages from

456

Pages to

465

Pages count

10

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT148230,
  author="Vojtěch {Kupka} and Qi {Zhou} and Farhan {Ansari} and Hu {Tang} and Miroslav {Šlouf} and Lucy {Vojtová} and Lars A. {Berglund} and Josef {Jančář}",
  title="Well-dispersed polyurethane/cellulose nanocrystal nanocomposites synthesized by a solvent-free procedure in bulk",
  journal="POLYMER COMPOSITES",
  year="2019",
  volume="40",
  number="S1",
  pages="456--465",
  doi="10.1002/pc.24748",
  issn="0272-8397"
}

Documents

Well-Dispersed Polyurethane-Cellulose Nanocrystal Nanocomposites Synthesized by a Solvent-Free Procedure in Bulk 2019