期刊
RSC ADVANCES
卷 11, 期 37, 页码 22812-22819出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ra02484a
关键词
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资金
- Fundamental Research Funds for the National Natural Science Foundation of China [31790188]
- Innovation-Driven Project Funds of Guangxi [AA17204087-15]
A series of SPI-based composite films were prepared by adding a small amount of reinforced materials (3%), improving the water resistance, hydrophilicity, mechanical properties and thermal stability of the films. The hydrogen bonding and filling effect of the reinforcing materials contribute to the formation of film structure, while EGDE cross-linking SPI with CNF and GO builds a chemical network to enhance the film properties.
Soybean protein isolate (SPI) shows a broad application prospect in the food and packaging industry. However, its inferior mechanical properties and water resistance limit its application. In this work, a series of SPI-based composite films were prepared by combining with cellulose nanofiber (CNF), graphene oxide (GO), GO/CNF, ethylene glycol diglycidyl ether (EDGE) or GO/CNF/EGDE. The results show that by adding a small amount of reinforced materials (3%), the water resistance, hydrophilicity, mechanical properties and thermal stability of composite films were improved. The filling effect and hydrogen bonding of the reinforcing materials contribute to the formation of film structure. EGDE cross-link SPI with CNF and GO build a chemical network to improve the properties of the film. In addition, they could make a synergistic effect to better enhance the performance of a protein film. Therefore, the tensile strength and elastic modulus of the SGCE film reached 469.21% and 367.58%, respectively.
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