Efficient Gas Barrier and Antibacterial Properties of Poly(lactic acid) Nanocomposites: Functionalization with Phytic Acid–Cu(II) Loaded Layered Clay
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Chemicals
2.2. Preparation of LDHs@PA-Cu(II)
2.3. Preparation of LDHs@PA-Cu(II)/PLA Nanocomposites
2.4. Characterization
2.4.1. Fourier Transforms Infrared Spectroscopy Analysis
2.4.2. X-ray Diffraction Analysis
2.4.3. Microstructure and Elemental Analysis
2.4.4. Differential Scanning Calorimeter Analysis
2.4.5. Thermal Stability Analysis
2.4.6. Mechanical Property Analysis
2.4.7. Oxygen Permeability Analysis
2.4.8. Antibacterial Activity Analysis
3. Results and Discussion
3.1. Chemical Structure of MgAl-CO3 LDHs and LDHs@PA-Cu(II)
3.2. Microstructure of MgAl-CO3 LDHs and LDHs@PA-Cu(II)
3.3. Antibacterial Properties of LDHs@PA-Cu(II) and LDHs@PA-Cu(II)/PLA Nanocomposites
3.4. Thermal Stability Properties of LDHs@PA-Cu(II) and LDHs@PA-Cu(II)/PLA Nanocomposites
3.5. Thermal and Crystallization Properties of LDHs@PA-Cu(II)/PLA Nanocomposites
3.6. Mechanical Properties and Microstructure of LDHs@PA-Cu(II)/PLA Nanocomposites
3.7. Oxygen Barrier Properties and Mechanism of LDHs@PA-Cu(II)/PLA Nanocomposites
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | PLA/g | LDHs@PA-Cu(II)/g | LDHs@PA-Cu(II)/wt % |
---|---|---|---|
PLA | 1.4 | 0 | 0 |
LPCP0.5 | 1.4 | 0.0070 | 0.5 |
LPCP1 | 1.4 | 0.0140 | 1 |
LPCP3 | 1.4 | 0.0433 | 3 |
LPCP5 | 1.4 | 0.0737 | 5 |
Sample | Tg/°C | Tm/°C | ΔH/J·g−1 | χ/% |
---|---|---|---|---|
PLA | 60.3 | 166.0 | 32.31 | 34.5 |
LPCP0.5 | 60.9 | 167.8 | 36.59 | 39.2 |
LPCP1 | 60.5 | 166.6 | 50.83 | 54.8 |
LPCP3 | 61.2 | 167.4 | 48.45 | 53.3 |
LPCP5 | 60.9 | 167.5 | 45.91 | 51.6 |
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Lei, Y.; Mao, L.; Yao, J.; Li, Z. Efficient Gas Barrier and Antibacterial Properties of Poly(lactic acid) Nanocomposites: Functionalization with Phytic Acid–Cu(II) Loaded Layered Clay. Materials 2020, 13, 2033. https://doi.org/10.3390/ma13092033
Lei Y, Mao L, Yao J, Li Z. Efficient Gas Barrier and Antibacterial Properties of Poly(lactic acid) Nanocomposites: Functionalization with Phytic Acid–Cu(II) Loaded Layered Clay. Materials. 2020; 13(9):2033. https://doi.org/10.3390/ma13092033
Chicago/Turabian StyleLei, Yongzhen, Long Mao, Jin Yao, and Zhihan Li. 2020. "Efficient Gas Barrier and Antibacterial Properties of Poly(lactic acid) Nanocomposites: Functionalization with Phytic Acid–Cu(II) Loaded Layered Clay" Materials 13, no. 9: 2033. https://doi.org/10.3390/ma13092033