Physicochemical properties of starch-CMC-nanoclay biodegradable films

被引:312
作者
Almasi, Hadi [1 ]
Ghanbarzadeh, Babak [1 ]
Entezami, Ali A. [2 ]
机构
[1] Univ Tabriz, Dept Food Sci & Technol, Fac Agr, Tabriz, Iran
[2] Univ Tabriz, Fac Chem, Dept Polymer Chem, Tabriz, Iran
关键词
Corn starch; Montmorillonite; Bionanocomposite; WATER-VAPOR PERMEABILITY; THERMOPLASTIC STARCH; MECHANICAL-PROPERTIES; NANOCOMPOSITES; BIOCOMPOSITES; POLYMERS;
D O I
10.1016/j.ijbiomac.2009.10.001
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
070307 [化学生物学]; 071010 [生物化学与分子生物学];
摘要
Novel citric acid (CA) modified starch-carboxymethyl cellulose (CMC)-montmorillonite (MMT) bionanocomposite films were prepared by casting method. X-ray diffraction (XRD) test showed that the 001 diffraction peak of nanoclay was shifted to lower angles in the bionanocomposites and it may be implied that the clay nanolayers formed an intercalated structure. However, completely exfoliated structure formed only in the pure starch-MMT nanocomposites (without CA and CIVIC). At the level of 7% MMT, the composite films showed the lowest solubility (7.21%). The MMT addition at content of 7% (w/w), caused to increase in ultimate tensile strength (UTS) by more than threefold in comparison to starch-CMC biocomposites. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 5
页数:5
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