Issue 43, 2019

Zein film functionalized with gold nanoparticles and the factors affecting its mechanical properties

Abstract

In this article, we report a simple method to synthesize biodegradable zein films functionalized with gold nanoparticles (AuNPs) with significantly improved mechanical properties, as an environmentally benign substitute to biologically hazardous polymers. Zein-coated AuNPs were synthesized using the zein protein as a reducing agent and characterized with IR, UV, CD, ζ-potential, and TEM measurements. The zein protein interaction with the negatively charged surface of AuNPs provides excellent strength to the zein thin film. For the first time, FT-IR spectral studies suggested the strong interaction between AuNPs and zein protein, which was further supported by the higher binding constant (Kb) value. The films were characterized for mechanical properties with spectroscopic and physical experimental investigations. The surface morphology of AuNP-doped zein film was explored by AFM and SEM, which suggested that the AuNPs prevent the buckling of zein film and increase the strength as well as flexibility of the film.

Graphical abstract: Zein film functionalized with gold nanoparticles and the factors affecting its mechanical properties

Supplementary files

Article information

Article type
Paper
Submitted
17 Jun 2019
Accepted
06 Aug 2019
First published
13 Aug 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 25184-25188

Zein film functionalized with gold nanoparticles and the factors affecting its mechanical properties

M. A. Puthiyaveetil Yoosaf, A. Jayaprakash, S. Ghosh, V. S. Jaswal, K. Singh, S. Mandal, M. Shahid, M. Yadav, S. Das and P. Kumar, RSC Adv., 2019, 9, 25184 DOI: 10.1039/C9RA04527A

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