Mechanical and moisture sensitivity of fully bio-based dialdehyde carboxymethyl cellulose cross-linked soy protein isolate films

被引：77
作者：
Zheng, Ting [1 ]
Yu, Xiaoyan [1 ]
Pilla, Srikanth [1 ,2 ]
机构：
[1] Clemson Univ, Dept Automot Engn, 4 Res Dr, Greenville, SC 29607 USA
[2] Clemson Univ, Dept Mat Sci & Engn, Clemson, SC 29634 USA
来源：
CARBOHYDRATE POLYMERS | 2017年 / 157卷
关键词：
Carboxymethyl cellulose; Soy protein isolate; Crosslinking; EDIBLE FILMS; BARRIER PROPERTIES; GELATIN; POLYMER;
D O I：
10.1016/j.carbpol.2016.11.011
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Dialdehyde carboxymethyl cellulose (DCMC) crosslinked soy protein isolate (SPI) films were prepared by solvent casting method. Effect of DCMC treatment on mechanical properties, water sensitivity, light barrier properties and thermal stability were investigated. Significant increase in tensile strength (TS) was observed (up to 218%), suggesting occurrence of highly effective crosslinking between SPI and DCMC. Significant improvement in TS compared to other dialdehyde polysaccharide crosslinking agents such as dialdehyde starch is likely due to higher compatibility of DCMC with SPI, as was further confirmed by SEM images. Crosslinking also led to reduction in water vapor permeability and moisture content along with an increase of insoluble mass percentage, indicating improvement in water resistance of these bio-based protein films. Thermal stability of protein films also showed improvement post crosslinking of DCMC. (C) 2016 Elsevier Ltd. All rights reserved.
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收藏
页码：1333 / 1340
页数：8
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