Properties of Soy Protein Isolate Biopolymer Film Modified by Graphene
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Aqueous Graphene Dispersion
2.3. Prepare of Graphene–SPI Films
2.4. Characterization of Graphene Aqueous Dispersion and SPI–Graphene Films
2.5. Mechanical Properties
2.6. Water Barrier Properties
3. Results
3.1. Characterization of Graphene Aqueous Dispersion
3.2. Structural Analysis of SPI-Based Films
3.3. Micromorphology of SPI-Based Films
3.4. Thermal Stability of SPI-Based Films
3.5. Mechanical Properties and Water Resistance
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Sample | SPI (g) | Glycerol (g) | Water (g) | Graphene Aqueous Dispersion (mL) | Graphene Content (%) |
---|---|---|---|---|---|
A | 4.0 | 2.0 | 0 | 75.0 | 93.0 |
B | 4.0 | 2.0 | 15.0 | 60.0 | 74.0 |
C | 4.0 | 2.0 | 30.0 | 45.0 | 56.0 |
D | 4.0 | 2.0 | 45.0 | 30.0 | 37.0 |
E | 4.0 | 2.0 | 60.0 | 15.0 | 19.0 |
F | 4.0 | 2.0 | 75.0 | 0 | 0 |
Sample | Tmax1 a (°C) | Tmax2 a (°C) |
---|---|---|
A | 167 | 297 |
B | 195 | 309 |
C | 169 | 298 |
D | 156 | 294 |
E | 166 | 292 |
F | 151 | 293 |
Sample | Thickness (mm) | TS (MPa) | E (MPa) | EB (%) |
---|---|---|---|---|
A | 0.32 (0.028) a | 5.35 (0.08) | 71.29 (6.97) | 182.84 (4.58) |
B | 0.32 (0.025) | 6.03 (0.29) | 113.03 (0.26) | 260.13 (6.69) |
C | 0.29 (0.010) | 5.88 (0.17) | 104.99 (5.91) | 197.07 (2.54) |
D | 0.31 (0.011) | 5.63 (0.37) | 89.84 (2.53) | 206.01 (4.83) |
E | 0.29 (0.015) | 5.60 (0.25) | 58.34 (4.25) | 189.09 (4.58) |
F | 0.29 (0.035) | 4.74 (0.18) | 47.58 (4.45) | 273.91 (1.84) |
Sample | MC (%) | TSM (%) | WU (%) |
---|---|---|---|
A | 20.84 (0.14) a | 29.60 (0.09) | 190.74 (4.40) |
B | 21.98 (0.15) | 30.14 (0.25) | 216.29 (2.22) |
C | 19.75 (0.48) | 31.84 (0.18) | 194.14 (4.81) |
D | 19.90 (0.40) | 31.95 (0.17) | 221.64 (1.22) |
E | 20.70 (0.03) | 31.40 (0.52) | 201.97 (5.93) |
F | 20.18 (0.02) | 33.37 (0.86) | 261.79 (2.71) |
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Han, Y.; Li, K.; Chen, H.; Li, J. Properties of Soy Protein Isolate Biopolymer Film Modified by Graphene. Polymers 2017, 9, 312. https://doi.org/10.3390/polym9080312
Han Y, Li K, Chen H, Li J. Properties of Soy Protein Isolate Biopolymer Film Modified by Graphene. Polymers. 2017; 9(8):312. https://doi.org/10.3390/polym9080312
Chicago/Turabian StyleHan, Yufei, Kuang Li, Hui Chen, and Jianzhang Li. 2017. "Properties of Soy Protein Isolate Biopolymer Film Modified by Graphene" Polymers 9, no. 8: 312. https://doi.org/10.3390/polym9080312