The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer

Jean Buffiere, Zoltan Balogh-Michels, Marc Borrega, Thomas Geiger, Tanja Zimmermann, Herbert Sixta

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

Abstract

This paper takes a comparative approach in characterizing two types of nano-scale cellulosic particles obtained using chemical-free pathways, either by nearcritical water treatment or by high-shear homogenization from the same microcrystalline cellulose (MCC). The nearcritical water treatment efficiently depolymerized cellulose, producing a solid precipitated fraction of low-molecular-weight material containing cellulose II, while homogenization mechanically deconstructed MCC without altering its molecular structure. Both pathways yielded nanocellulose-like materials yet with different morphologies. The mechanically produced, rod-like particles were obtained with high yield. In contrast, the hydrothermal precipitate exhibited more hydrophobic ribbon-like particles that provided a greater level of particle-particle interaction. Both materials successfully acted as stabilizers for oil-in-water Pickering emulsions; however, the hydrothermally-produced material exhibited superior performance, with stable emulsions obtained upon addition of as low as 1.0 wt.% cellulose. These two pathways are highly relevant for altering the structure and properties of MCC and for formulating new, sustainably produced nanocellulose-based materials.
Original languageEnglish
Pages (from-to)48-56
Number of pages9
JournalCarbohydrate Polymers
Volume178
DOIs
Publication statusPublished - 15 Dec 2017
MoE publication typeA1 Journal article-refereed

Fingerprint

Emulsions
Cellulose
Water treatment
Particle interactions
Molecular structure
Precipitates
Oils
Molecular weight
microcrystalline cellulose
Water

Keywords

  • microcrystalline cellulose
  • microfluidization
  • nanocellulose
  • nearcritical water
  • pickering emulsions

Cite this

Buffiere, Jean ; Balogh-Michels, Zoltan ; Borrega, Marc ; Geiger, Thomas ; Zimmermann, Tanja ; Sixta, Herbert. / The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer. In: Carbohydrate Polymers. 2017 ; Vol. 178. pp. 48-56.
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The chemical-free production of nanocelluloses from microcrystalline cellulose and their use as Pickering emulsion stabilizer. / Buffiere, Jean; Balogh-Michels, Zoltan; Borrega, Marc; Geiger, Thomas; Zimmermann, Tanja; Sixta, Herbert.

In: Carbohydrate Polymers, Vol. 178, 15.12.2017, p. 48-56.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Balogh-Michels, Zoltan

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