Mechanical and thermal properties of microcrystalline cellulose-reinforced soy protein isolate–gelatin eco-friendly films

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56518-56525 ◽  
Author(s):  
Chenchen Li ◽  
Jing Luo ◽  
Zhiyong Qin ◽  
Hui Chen ◽  
Qiang Gao ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Thermal Properties ◽  
Microcrystalline Cellulose ◽  
Soy Protein ◽  
Soy Protein Isolate ◽  
Protein Isolate ◽  
Mechanical And Thermal Properties ◽  
Interpenetrating Network ◽  
Gelatin Films

SPI–gelatin films reinforced by MCC with hydrogen bond and interpenetrating network perform better mechanical and thermal properties.

scholarly journals High-Performance Microcrystalline Cellulose/Soy Protein Isolate-Based Nanocomposite Film via Cu and Zn Nanoclusters Modification

2017 ◽  
Author(s):  
Kuang Li ◽  
Shicun Jin ◽  
Hui Chen ◽  
Jing He ◽  
Jianzhang Li
Keyword(s):  
Tensile Strength ◽  
Microcrystalline Cellulose ◽  
Soy Protein ◽  
High Performance ◽  
Soy Protein Isolate ◽  
Composite Films ◽  
Protein Isolate ◽  
Strong Interactions ◽  
Metal Nanoclusters ◽  
Water Contact

Soy protein isolate (SPI) based materials are abundant, biocompatible, renewable, and biodegradable. In order to improve the tensile strength (TS) of SPI films, we prepared a novel composite film modified with microcrystalline cellulose (MCC) and metal nanoclusters (NCs) in this research. The effects of the modification of MCC on the properties of SPI-Cu NCs and Zn NCs films were investigated. Attenuated total reflectance-Fourier transformed infrared spectroscopy analyses and X-ray diffraction patterns characterized the strong interactions and reduction of the crystalline structure of the composite films. Scanning electron microscope showed the enhanced cross-linked and entangled structure of modified films. Compared with untreated SPI film, the tensile strength of the SPI-MCC-Cu and SPI-MCC-Zn films increased from 2.91 MPa to 13.95 and 6.52 MPa, respectively. Moreover, the results also indicated their favorable water resistance with higher water contact angle. Meanwhile, the composite films exhibited increased initial degradation temperatures, demonstrating their higher thermostability. The results suggested that MCC could effectively improve the performance of SPI-NCs films, which would provide a novel preparation method for environmentally friendly SPI-based films in the applications of packaging materials.

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