Preparation, structure and properties of gelatin composite film modified by phytic acid

被引：0
|
作者：
Jin H. [1 ]
Liu X. [2 ]
Lin Y. [2 ]
机构：
[1] College of Architectural Engineering, Zhangzhou Institute of Technology, Zhangzhou
[2] College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 07期
关键词：
Composite film; Gelatin; Mechanical properties; Phytic acid; Swelling rate; Transmittance;
D O I：
10.16085/j.issn.1000-6613.2020-1525
中图分类号：
学科分类号：
摘要：
In this study, the solution blending method was used to explore the preparation of phytic acid/gelatin composite films by adding different proportions of phytic acid. The effect of different phytic acid content on the crystalline structure, microscopic morphology, transparency, swelling and mechanical strength of the composite film was tested, and then the structure regulation and performance improvement effect of phytic acid on the gelatin film were analyzed and explored. The results showed that compared with pure gelatin film, phytic acid had obvious crosslinking modification effect on gelatin. The composite film had a compact and uniform internal structure. Phytic acid inhibited the self-crystallization behavior of gelatin through the interaction of polar groups and reduced the crystallinity of the composite film. As the content of phytic acid increased, the visible light transmittance of the composite film decreased. The swelling rate changes indicated that the structural reorganization of phytic acid and gelatin can effectively block the penetration of water molecules. The mechanical strength of the composite film was increasing with the addition of phytic acid. When the mass fraction of phytic acid reached 10%, the tensile strength of the phytic acid/gelatin composite film was 61.57MPa, which was about 20% higher than that of pure gelatin (50MPa). However, it had no obvious effect on elongation at break. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：3847 / 3853
页数：6
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