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Production and Characterisation of Pickering Emulsions Stabilised by Colloidal Lignin Particles Produced from Various Bulk Lignins

Author

Listed:
  • Julia Tomasich

    (Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria
    Lignovations GmbH, 3400 Klosterneuburg, Austria)

  • Stefan Beisl

    (Lignovations GmbH, 3400 Klosterneuburg, Austria)

  • Michael Harasek

    (Institute of Chemical, Environmental and Bioscience Engineering, TU Wien, 1060 Vienna, Austria)

Abstract

The use of lignin, an abundant phenolic bio-polymer, allows us to transform our fossil-based economy into a sustainable and bio-based economy. The transformation of bulk lignin into colloidal lignin particles (CLPs) with well-defined surface chemistry and morphology is a possible way to cope with the heterogeneity of lignin and use it for material applications. These CLPs can be used as emulsifiers in so-called Pickering emulsions, where solid particles stabilise the emulsion instead of environmentally harmful synthetic surfactants. This work investigates the application of CLPs produced from various bulk lignins as a stabiliser in o/w Pickering emulsions with two different oil phases (solid and liquid state). The CLPs had a primary particle size of 28 to 55 nm. They were successful in stabilising oil-in-water Pickering emulsions with high resistance to coalescence and a strong gel-like network. This enables novel applications for CLPs in the chemical and cosmetic industries, and can replace fossil-based and synthetic ingredients.

Suggested Citation

  • Julia Tomasich & Stefan Beisl & Michael Harasek, 2023. "Production and Characterisation of Pickering Emulsions Stabilised by Colloidal Lignin Particles Produced from Various Bulk Lignins," Sustainability, MDPI, vol. 15(4), pages 1-14, February.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:4:p:3693-:d:1071337
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