Fabrication and Characterization of Thermal-Responsive Biomimetic Small-Scale Shape Memory Wood Composites with High Tensile Strength, High Anisotropy
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Chemicals
2.2. The Process of Delignification
2.3. Preparation of Impregnation Polymer
2.4. Preparation of the Shape Memory Wood
2.5. Measurements and Characterization
- βi: The initial bending angle degree of SMWs.
- βd: The deformation bending angle degree of SMWs in external force.
- βf: The bending angle degree without external force at room temperature.
- βr: The residual bending angle degree in recovery process at different experiment condition.
3. Results and Discussion
3.1. Morphology of the Shape Memory Wood
3.2. The Combination Mechanism and Crosslinking
3.3. Thermal and Mechanical Properties
3.4. Shape Memory Properties of Shape Memory Wood
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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No. | The Weight of LRW (g) | The Weight of SMW (g) | WcSMP (%) | VrSMP (%) | SR-L (%) | CR-R (%) | SR-T (%) |
---|---|---|---|---|---|---|---|
S1 | 0.213 | 1.428 | 570.42 | 87.41% | 0.11% | 1.83% | 4.46% |
S2 | 0.235 | 1.491 | 534.47 | 87.70% | 1.92% | 0.11% | 6.44% |
S3 | 0.198 | 1.355 | 584.34 | 85.17% | 2.37% | −0.81% | 2.97% |
S4 | 0.227 | 1.406 | 519.38 | 84.18% | 1.35% | 0.41% | 3.96% |
S5 | 0.215 | 1.432 | 566.05 | 88.22% | 1.58% | 1.57% | 3.96% |
PLRW = 93.27% ρPP = 1.129 g/mL |
Name | Gel Content | m0 (g) | m (g) |
---|---|---|---|
SMW | 56.83% | 1.426 | 0.892 |
c-PCL | 61.53% | 2.620 | 1.612 |
LRW | − | 0.535 | 0.510 |
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Wang, L.; Luo, B.; Wu, D.; Liu, Y.; Li, L.; Liu, H. Fabrication and Characterization of Thermal-Responsive Biomimetic Small-Scale Shape Memory Wood Composites with High Tensile Strength, High Anisotropy. Polymers 2019, 11, 1892. https://doi.org/10.3390/polym11111892
Wang L, Luo B, Wu D, Liu Y, Li L, Liu H. Fabrication and Characterization of Thermal-Responsive Biomimetic Small-Scale Shape Memory Wood Composites with High Tensile Strength, High Anisotropy. Polymers. 2019; 11(11):1892. https://doi.org/10.3390/polym11111892
Chicago/Turabian StyleWang, Luhao, Bin Luo, Danni Wu, Yi Liu, Li Li, and Hongguang Liu. 2019. "Fabrication and Characterization of Thermal-Responsive Biomimetic Small-Scale Shape Memory Wood Composites with High Tensile Strength, High Anisotropy" Polymers 11, no. 11: 1892. https://doi.org/10.3390/polym11111892