Physicochemical and superficial characterization of a bilayer film of zein and pectin obtained by electrospraying

Victor A. Gaona-Sánchez, Georgina Calderón-Domínguez, Eduardo Morales-Sánchez, Luis A. Moreno-Ruiz, Eduardo Terrés-Rojas, Ma de la Paz Salgado-Cruz, Monserrat Escamilla-García, Rigoberto Barrios-Francisco

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2 Scopus citations


The preparation by electrospraying of a bilayer film formed by a pectin layer (hydrophilic, polar) and a zein layer (hydrophobic, nonpolar), is a difficult task that has not yet been reported. Herein, the feasibility of producing films by electrostatic atomization was studied, as well as the changes in the superficial and physicochemical characteristics of the bilayer film. Results showed that it is possible to produce a flexible and yellow bilayer film (101.07 ± 8.11 μm) with a continuous surface structure and a well-defined interface, without chemical interactions between both layers nor antimicrobial activity. This study is one of the first to show that the electrospraying technique can be used to generate biodegradable bilayer films using hydrophilic/hydrophobic biopolymer solutions.

Original languageEnglish
Article number50045
JournalJournal of Applied Polymer Science
Issue number12
StatePublished - 20 Mar 2021


  • biopolymers and renewable polymers
  • degradation
  • electrospinning
  • films
  • spectroscopy


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