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Uysal Unalan I, Boyacı D, Trabattoni S, et al. Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties. Nanomaterials (Basel). 2017;7(9)doi: 10.3390/nano7090281.
Uysal Unalan, I., Boyacı, D., Trabattoni, S., Tavazzi, S., & Farris, S. (2017). Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties. Nanomaterials (Basel, Switzerland), 7(9), . https://doi.org/10.3390/nano7090281
Uysal Unalan, Ilke, et al. "Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties." Nanomaterials (Basel, Switzerland) vol. 7,9 (2017). doi: https://doi.org/10.3390/nano7090281
Uysal Unalan I, Boyacı D, Trabattoni S, Tavazzi S, Farris S. Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties. Nanomaterials (Basel). 2017 Sep 19;7(9). doi: 10.3390/nano7090281. PMID: 28925951; PMCID: PMC5618392.
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Nanomaterials (Basel). 2017 Sep 19;7(9). doi: 10.3390/nano7090281.

Transparent Pullulan/Mica Nanocomposite Coatings with Outstanding Oxygen Barrier Properties.

Nanomaterials (Basel, Switzerland)

Ilke Uysal Unalan, Derya Boyacı, Silvia Trabattoni, Silvia Tavazzi, Stefano Farris

Affiliations

  1. DeFENS, Department of Food, Environmental and Nutritional Sciences-Packaging Division, University of Milan, via Celoria, 2, 20133 Milan, Italy. [email protected].
  2. Department of Food Engineering, Faculty of Engineering, ?zmir University of Economics, ?zmir 35330, Turkey. [email protected].
  3. School of Packaging, Michigan State University, East Lansing, MI 48824, USA. [email protected].
  4. DeFENS, Department of Food, Environmental and Nutritional Sciences-Packaging Division, University of Milan, via Celoria, 2, 20133 Milan, Italy. [email protected].
  5. Department of Food Engineering, Izmir Institute of Technology, ?zmir 35430, Turkey. [email protected].
  6. Department of Materials Science, University of Milano Bicocca, via Cozzi 55, 20125 Milan, Italy. [email protected].
  7. Department of Materials Science, University of Milano Bicocca, via Cozzi 55, 20125 Milan, Italy. [email protected].
  8. DeFENS, Department of Food, Environmental and Nutritional Sciences-Packaging Division, University of Milan, via Celoria, 2, 20133 Milan, Italy. [email protected].
  9. INSTM, National Consortium of Materials Science and Technology, Local Unit University of Milan, via Celoria 2, 20133 Milan, Italy. [email protected].

PMID: 28925951 PMCID: PMC5618392 DOI: 10.3390/nano7090281

Abstract

This study presents a new bionanocomposite coating on poly(ethylene terephthalate) (PET) made of pullulan and synthetic mica. Mica nanolayers have a very high aspect ratio (α), at levels much greater than that of conventional exfoliated clay layers (e.g., montmorillonite). A very small amount of mica (0.02 wt %, which is ϕ ≈ 0.00008) in pullulan coatings dramatically improved the oxygen barrier performance of the nanocomposite films under dry conditions, however, this performance was partly lost as the environmental relative humidity (RH) increased. This outcome was explained in terms of the perturbation of the spatial ordering of mica sheets within the main pullulan phase, because of RH fluctuations. This was confirmed by modelling of the experimental oxygen transmission rate (

Keywords: coefficient of friction; haze; mica; modelling; optical properties; oxygen barrier; pullulan

Conflict of interest statement

The authors declare no conflict of interest.

References

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