Barrier properties of corn zein nanocomposite coated polypropylene films for food packaging applications

被引：100

作者：

Ozcalik, Onur ^{[2
]}

Tihminlioglu, Funda ^{[1
]}

机构：

[1] Izmir Inst Technol, Dept Chem Engn, TR-35430 Izmir, Turkey

[2] Izmir Inst Technol, Mat Sci & Engn Program, TR-35430 Izmir, Turkey

来源：

JOURNAL OF FOOD ENGINEERING | 2013年 / 114卷 / 04期

关键词：

Polypropylene; Corn zein; Biopolymer; Nanocomposite coating; Barrier properties; WATER-VAPOR PERMEABILITY; MECHANICAL-PROPERTIES; WHEY-PROTEIN; TENSILE PROPERTIES; OXYGEN; FTIR; TECHNOLOGIES; CELLULOSE; POLYMERS; COATINGS;

D O I：

10.1016/j.jfoodeng.2012.09.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The feasibility of corn zein nanocomposite (CZNC) coatings as an alternative to synthetic polymer barrier layer on polypropylene (PP) films was examined. The effect of layered silicate content in the CZNC layers on the barrier and surface hydrophobicity of the CZNC-PP films were investigated. Incorporation of organomodified montmorillonite (OMMT) by solution intercalation into zein matrix significantly improved oxygen and water vapor barrier of coated PP films. The barrier properties were also investigated theoretically by using various phenomenological permeability models. Tortuous permeation path formed by the fine delamination of nanoclays was found to be responsible for the barrier improvements in zein layers. In conclusion, durable CZNC-PP laminates were developed. CZNC coating of PP films has reduced the oxygen permeability nearly four times, while water vapor permeability reduced by 30% with 5 wt.% OMMT content in 5.9 mu m corn zein coating. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：505 / 513

页数：9

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