4D Printing and Shape Memory Performance of Polydopamine/Polylactic Acid Composites
Xiaole Zhao
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorTingting Lu
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorMin Yuan
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorFuyou Ke
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorCorresponding Author
Ye Chen
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Correspondence:
Ye Chen ([email protected])
Search for more papers by this authorHuaping Wang
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorXiaole Zhao
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorTingting Lu
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorMin Yuan
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorFuyou Ke
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorCorresponding Author
Ye Chen
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Correspondence:
Ye Chen ([email protected])
Search for more papers by this authorHuaping Wang
State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai, China
Search for more papers by this authorFunding: This work was supported by Shanghai Science and Technology Innovation Action Plan Natural Science Foundation General Project, 24ZR1400200 Fundamental Research Funds for the Central Universities, 2232024A-02.
ABSTRACT
This study investigates the thermal, mechanical, and photothermal-driven shape memory properties of 3D-printed polydopamine (PDA) and polylactic acid (PLA) blends in the context of 4D printing. Homemade PDA particles were incorporated into the PLA matrix via melt blending, and 4D printing was performed using fused deposition modeling (FDM) to fabricate PLA composite parts with superior shape memory and mechanical properties. These properties enable remote light-driven actuation, achieving up to 70% shape recovery within 300 s. Increased laser power density to three times the original, the shape recovery time was shortened from 420 s to 180 s. Furthermore, the incorporation of PDA improved the material's surface wettability. Specifically, the water contact angle of pure PLA was 83.2° at 20 s, whereas the addition of 3 wt% PDA reduced it to 51.8°. These results suggest the potential application of the composite material as a scaffold for bone tissue engineering.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
| Filename | Description |
|---|---|
| pat70200-sup-0001-supinfo.docxWord 2007 document , 2.3 MB |
Table S1. FDM printing parameters. Figure S1. Shape memory recovery process of spline with different filling rates. Table S2. Shape memory recovery rate corresponding to fill rate. Figure S2. Spline shape memory recovery process at different raster angles. Table S3. Shape memory recovery rate corresponding to Grating angle. Figure S3. Mechanical properties test results of samples with different filling percentage: (a) tensile strength and elongation at break; (b) compressive stress–strain curve. Figure S4. Mechanical properties and porosity test results of samples with different filling angles: (a) tensile strength and elongation at break (b) compressive stress–strain curve. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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