Mechanical and barrier properties of corn distarch phosphate-zein bilayer films by thermocompression

Corn distarch phosphate-zein bilayer films (C-Z) fabricated from corn distarch phosphate-based films (C) laminated on zein-based films (Z) by thermocompression. The strong interaction between starch and zein molecules was formed by hydrogen bonding, which resulted in good thermal stability of bilaye...

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Bibliographic Details
Published in:International journal of biological macromolecules 2018-10, Vol.118 (Pt B), p.2076-2081
Main Authors: Sun, Haitao, Shao, Xinru, Jiang, Ruiping, Shen, Zhimin, Ma, Zhongsu
Format: Article
Language:English
Subjects:
Bilayer films
Corn distarch phosphate-zein
Lipid Bilayers - chemistry
Mechanical Phenomena
Oxygen - analysis
Permeability
Phosphates - chemistry
Spectroscopy, Fourier Transform Infrared
Starch - chemistry
Steam - analysis
Temperature
Tensile Strength
Thermocompression
X-Ray Diffraction
Zea mays - chemistry
Zein - chemistry
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Summary:Corn distarch phosphate-zein bilayer films (C-Z) fabricated from corn distarch phosphate-based films (C) laminated on zein-based films (Z) by thermocompression. The strong interaction between starch and zein molecules was formed by hydrogen bonding, which resulted in good thermal stability of bilayer films. Moreover, bilayer films exhibited better mechanical properties and ductility than monolayer Z films, and concomitantly enhanced the moisture barrier and oxygen barrier for monolayer C films. The tensile strength (TS) and elongation at break (EAB) of the C-Z bilayer films (the ratio C:Z was 6:4) increased by 74.04% and 348.13% over the Z films, respectively. Compared with C films, the water vapor permeability (WVP) and oxygen permeability (OP) of the C-Z bilayer films (the ratio C:Z was 6: 4) decreased by 31.53 and 24.26%, respectively. [Display omitted] •C-Z bilayer film was produced from C film laminated on Z film by thermocompression.•Mechanical properties and barrier properties of C-Z bilayer film were improved.•C-Z bilayer film had continuous and compact microstructure was evidenced by SEM.•C-Z bilayer film had good interfacial adhesion and thermal stability.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2018.07.069