Chitosan-caseinate bilayer coatings for paper packaging materials

被引：121

作者：

Khwaldia, Khaoula ^{[1
]}

Basta, Altaf H. ^{[2
]}

Aloui, Hajer ^{[1
]}

El-Saied, Houssni ^{[2
]}

机构：

[1] INRAP, LSN, Pole Technol Sidi Thabet, Sidi Thabet 2020, Tunisia

[2] Natl Res Ctr, Cellulose & Paper Dept, Cairo 12622, Egypt

来源：

CARBOHYDRATE POLYMERS | 2014年 / 99卷

关键词：

Caseinate; Chitosan; Paper; Composite coating; Bilayer coating; Functional properties; WATER-VAPOR BARRIER; MECHANICAL-PROPERTIES; SODIUM CASEINATE; EDIBLE FILMS; COATED PAPER; BIOPOLYMER; RESISTANCE; GELATIN; PERMEABILITY; SURFACE;

D O I：

10.1016/j.carbpol.2013.08.086

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Papers coated with caseinate and caseinate/chitosan bilayer films were developed. Caseinate, chitosan and caseinate/chitosan films were preliminary characterized by FTIR spectroscopy and thermal stability analyses. The effects of coating weight, caseinate concentration (7%, 10%, and 12%, w/w), and coating application methods (single layer and bilayer) on the physical and mechanical properties of coated papers were studied. Increasing the concentration of caseinate led to a decrease in water vapor permeability (WVP) of the resulting coated paper sheets. Chitosan significantly (p < 0.05) increased the elongation at break (%E) of coated paper. However, the application of chitosan as a second layer on wet or dry caseinate films did not significantly affect (p > 0.05) the tensile strength (TS) of coated paper. The greatest reduction in paper WVP is achieved by addition of a chitosan layer to the dried preformed caseinate-coated paper. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：508 / 516

页数：9

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