PVB/sepiolite nanocomposites as reinforcement agents for paper

Authors

  • Ivona Janković Častvan Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade
  • Slavica Lazarević Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade
  • Dušica Stojanović Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade
  • Predrag Živković Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade
  • Rada Petrović Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade
  • Đorđe Janaćković Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 11000 Belgrade

DOI:

https://doi.org/10.2298/JSC160506067J

Keywords:

nanocomposites, sepiolite, mechanical properties, nanoindentation

Abstract

In order to improve the mechanical properties of paper, 1, 3 and 5 wt. % of sepiolite were dispersed in a poly(vinyl butyral) (PVB) matrix and coated onto the surface of schrenz (110 g m-2). Deagglomerated sepiolite nanofibers in the PVB matrix on the paper surface were observed by scanning electron microscopy. The glass transition temperature of schrenz with PVB/sepiolite coatings was not changed with increasing content of sepiolite. Two different methods were used to evaluate the mechanical properties of the paper sample reinforced with PVB/sepiolite nanocomposites: tensile testing and nanoindentation. The values of breaking force and tensile energy absorption of the reinforced paper samples obtained by tensile testing were increased by up 10 %. The values of the reduced elastic modulus and hardness obtained by nanoindentation were increased by up to 78 %. The best improvement of the mechanical properties was shown by the paper sample coated with PVB/3 wt. % sepiolite nanocomposite.

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Published

2016-11-26

How to Cite

[1]
I. Janković Častvan, S. Lazarević, D. Stojanović, P. Živković, R. Petrović, and Đorđe Janaćković, “PVB/sepiolite nanocomposites as reinforcement agents for paper”, J. Serb. Chem. Soc., vol. 81, no. 11, pp. 1295-1304, Nov. 2016.

Issue

Section

Materials