Spontaneous delamination of affordable natural vermiculite as a high barrier filler for biodegradable food packaging

Volodymyr Dudko; Renee L. Timmins; Olena Khoruzhenko; Maximilian Röhrl; Christopher Greve; Sabine Rosenfeldt; Tekla Tammelin; Seema Agarwal; Eva M. Herzig; Josef Breu

doi:10.1039/d2ma00734g

Spontaneous delamination of affordable natural vermiculite as a high barrier filler for biodegradable food packaging

Volodymyr Dudko, Renee L. Timmins, Olena Khoruzhenko, Maximilian Röhrl, Christopher Greve, Sabine Rosenfeldt, Tekla Tammelin, Seema Agarwal, Eva M. Herzig, Josef Breu^* (Corresponding Author)

^*Corresponding author for this work

BA54 Biomaterial processing and products

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

Expensive biodegradable packaging as a preventative measure against continued accumulation of plastic waste in our environment is often in conflict with the need for high performing packaging materials that prevent food waste. Compounding with delaminated vermiculite nanosheets is a compelling concept to simultaneously improve barrier properties through creation of a ‘tortuous path’ while also decreasing the price of the system due to its natural abundance. However, an effective delamination process that captures the full barrier improvement potential of this natural filler has been lacking. Here, we present a superior protocol for vermiculite delamination based on reducing the intrinsic hydrophobicity due to interlayer Mg²⁺ cations and the transfer of this osmotically swollen, liquid crystalline state into organic solvents. Nanocomposite coatings of degradable polyesters on nanocellulose exhibited oxygen and water transmission rates of 1.30 cm³ m⁻² day⁻¹ atm⁻¹ and 1.74 g m⁻² day⁻¹, respectively, which competes with high-end, non-degradable poly(vinylidene dichloride) films.

Original language	English
Pages (from-to)	9052-9062
Number of pages	11
Journal	Materials Advances
Volume	3
Issue number	24
DOIs	https://doi.org/10.1039/d2ma00734g
Publication status	Published - 3 Nov 2022
MoE publication type	A1 Journal article-refereed

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title = "Spontaneous delamination of affordable natural vermiculite as a high barrier filler for biodegradable food packaging",

abstract = "Expensive biodegradable packaging as a preventative measure against continued accumulation of plastic waste in our environment is often in conflict with the need for high performing packaging materials that prevent food waste. Compounding with delaminated vermiculite nanosheets is a compelling concept to simultaneously improve barrier properties through creation of a {\textquoteleft}tortuous path{\textquoteright} while also decreasing the price of the system due to its natural abundance. However, an effective delamination process that captures the full barrier improvement potential of this natural filler has been lacking. Here, we present a superior protocol for vermiculite delamination based on reducing the intrinsic hydrophobicity due to interlayer Mg2+ cations and the transfer of this osmotically swollen, liquid crystalline state into organic solvents. Nanocomposite coatings of degradable polyesters on nanocellulose exhibited oxygen and water transmission rates of 1.30 cm3 m−2 day−1 atm−1 and 1.74 g m−2 day−1, respectively, which competes with high-end, non-degradable poly(vinylidene dichloride) films.",

author = "Volodymyr Dudko and Timmins, {Renee L.} and Olena Khoruzhenko and Maximilian R{\"o}hrl and Christopher Greve and Sabine Rosenfeldt and Tekla Tammelin and Seema Agarwal and Herzig, {Eva M.} and Josef Breu",

note = "Funding Information: V. Dudko and R. Timmins contributed equally to this work The project has been funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 391977956 -SFB1357/C02. V. D. thanks the Elite Network of Bavaria for support. Tekla Tammelin gratefully acknowledges the Academy of Finland's Flagship Competence Center for Materials Bioeconomy, FinnCERES. The authors thank Marco Schwarzmann for preparing and taking the transmission electron microscopy images, Michael Thelen for AFM measurements, and Dr Matthias Daab for useful discussions. We appreciate the support of the Keylabs for Polymer Additives and Fillers, Optical and Electron Microscopy, Mesoscale Characterization: Scattering Techniques, Surface and Interface Characterization of the Bavarian Polymer Institute (BPI). ",

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AU - Dudko, Volodymyr

AU - Timmins, Renee L.

AU - Khoruzhenko, Olena

AU - Röhrl, Maximilian

AU - Greve, Christopher

AU - Rosenfeldt, Sabine

AU - Tammelin, Tekla

AU - Agarwal, Seema

AU - Herzig, Eva M.

AU - Breu, Josef

N1 - Funding Information: V. Dudko and R. Timmins contributed equally to this work The project has been funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project number 391977956 -SFB1357/C02. V. D. thanks the Elite Network of Bavaria for support. Tekla Tammelin gratefully acknowledges the Academy of Finland's Flagship Competence Center for Materials Bioeconomy, FinnCERES. The authors thank Marco Schwarzmann for preparing and taking the transmission electron microscopy images, Michael Thelen for AFM measurements, and Dr Matthias Daab for useful discussions. We appreciate the support of the Keylabs for Polymer Additives and Fillers, Optical and Electron Microscopy, Mesoscale Characterization: Scattering Techniques, Surface and Interface Characterization of the Bavarian Polymer Institute (BPI).

PY - 2022/11/3

Y1 - 2022/11/3

N2 - Expensive biodegradable packaging as a preventative measure against continued accumulation of plastic waste in our environment is often in conflict with the need for high performing packaging materials that prevent food waste. Compounding with delaminated vermiculite nanosheets is a compelling concept to simultaneously improve barrier properties through creation of a ‘tortuous path’ while also decreasing the price of the system due to its natural abundance. However, an effective delamination process that captures the full barrier improvement potential of this natural filler has been lacking. Here, we present a superior protocol for vermiculite delamination based on reducing the intrinsic hydrophobicity due to interlayer Mg2+ cations and the transfer of this osmotically swollen, liquid crystalline state into organic solvents. Nanocomposite coatings of degradable polyesters on nanocellulose exhibited oxygen and water transmission rates of 1.30 cm3 m−2 day−1 atm−1 and 1.74 g m−2 day−1, respectively, which competes with high-end, non-degradable poly(vinylidene dichloride) films.

AB - Expensive biodegradable packaging as a preventative measure against continued accumulation of plastic waste in our environment is often in conflict with the need for high performing packaging materials that prevent food waste. Compounding with delaminated vermiculite nanosheets is a compelling concept to simultaneously improve barrier properties through creation of a ‘tortuous path’ while also decreasing the price of the system due to its natural abundance. However, an effective delamination process that captures the full barrier improvement potential of this natural filler has been lacking. Here, we present a superior protocol for vermiculite delamination based on reducing the intrinsic hydrophobicity due to interlayer Mg2+ cations and the transfer of this osmotically swollen, liquid crystalline state into organic solvents. Nanocomposite coatings of degradable polyesters on nanocellulose exhibited oxygen and water transmission rates of 1.30 cm3 m−2 day−1 atm−1 and 1.74 g m−2 day−1, respectively, which competes with high-end, non-degradable poly(vinylidene dichloride) films.

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DO - 10.1039/d2ma00734g

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VL - 3

SP - 9052

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JO - Materials Advances

JF - Materials Advances

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ER -

Spontaneous delamination of affordable natural vermiculite as a high barrier filler for biodegradable food packaging

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