Effect of plasticizing and crosslinking at room temperature on microstructure replication using soft lithography on zein films

E. A. Barber, H. Turasan, P. G. Gezer, D. Devina, G. L. Liu, J. Kokini

Research output: Contribution to journalArticle

Abstract

This study examined various zein film formulations to improve the properties for a Surface Enhanced Raman Spectroscopy (SERS) sensor application. Both oleic acid (OA) plasticizer and glutaraldehyde (GDA) crosslinker were simultaneously incorporated in the films to heighten particular mechanical and surface properties and enhance fidelity of transfer of micro/nano structures. It was found that both GDA and OA concentrations played a significant role in the overall properties of the film to make an effective SERS substrate. The formulation with the best fidelity of transfer during micro/nano lithography was found to be the one containing 0.8 OA with 4% GDA. SERS measurements proved that better nanostructure fidelity enhances the intensity of the Raman signal.

Original languageEnglish (US)
Pages (from-to)55-64
Number of pages10
JournalJournal of Food Engineering
Volume250
DOIs
StatePublished - Jun 2019

Keywords

  • Crosslinking
  • Plasticization
  • SERS
  • Zein

ASJC Scopus subject areas

  • Food Science

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