Skip to main content
Log in

Preparation, characterization, and application of soy protein isolate/Mg–Al layered double hydroxide-based bionanocomposite films

  • Original Paper
  • Published:
Chemical Papers Aims and scope Submit manuscript

Abstract

Soy protein isolate has received much attention in recent decades due to its abundance, eco-friendliness, low cost, film-forming capacity, and processability. In this study, novel soy protein isolate (SPI)-based bionanocomposite films were prepared by integrating Mg–Allayered double hydroxide (LDH) at different loadings (0%, 2%, 5%, and 9% w/w) using a simple solution casting process. The Mg–Al LDH was synthesized in a 2:1 molar ratio via a co-precipitation method. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field-emission scanning electron microscopy, and thermogravimetric analysis (TGA) revealed intercalation/exfoliation of Mg–Al LDH sheets in the SPI matrix of bionanocomposite films. Agglomeration of Mg–Al LDH was distinctly noticed as its concentration increased from 0 to 9% (w/w). The bionanocomposite films showed considerable thermal stability. Mechanical and biodegradation qualities were also investigated. The tensile strength values of the prepared films with 0%, 2%, 5%, and 9% w/w LDH loadings were found to be 2.12 ± 0.25, 1.60 ± 0.15, 1.64 ± 0.08 and 1.58 ± 0.06 KNm/g, respectively. The SPI-Mg/Al LDH 5% film showed a substantial increase in tensile strength and efficiently degraded in non-sterile soil.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8

Similar content being viewed by others

References

Download references

Acknowledgements

The authors would like to acknowledge Dr. Ashish Kumar, Ph.D. (IIT Roorkee), Research Engineer at Avantha Centre for Industrial Research & Development for mechanical testing, and Malaviya National Institute of Technology Jaipur for thermogravimetric analysis.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Bonamali Pal.

Ethics declarations

Conflict of interest

The authors would like to declare that they have no financial and personal conflicts of interest that could have appeared to affect the present research article.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 1620 KB)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sharma, S., Das, N. & Pal, B. Preparation, characterization, and application of soy protein isolate/Mg–Al layered double hydroxide-based bionanocomposite films. Chem. Pap. 77, 3265–3275 (2023). https://doi.org/10.1007/s11696-023-02702-w

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11696-023-02702-w

Keywords

Navigation