3D/4D Printing of Polymers: Fused Deposition Modelling (FDM), Selective Laser Sintering (SLS), and Stereolithography...

Area of Science:

• Materials Science
• Manufacturing Engineering
• Polymer Science

Background:

• Additive manufacturing (AM), or 3D printing, enables precise control over material composition, processing, and geometry for object creation.
• Polymer-based 3D printing is widely adopted, with fused deposition modeling (FDM), selective laser sintering (SLS), and stereolithography (SLA) being prominent techniques.
• Understanding the interplay between polymer materials, printing processes, and resulting properties is crucial for advanced applications.

Purpose of the Study:

• To provide a comparative overview of FDM, SLS, and SLA polymer 3D printing techniques.
• To correlate polymer material characteristics with process parameters and final part properties for each technique.
• To explore material-process requirements for 4D printing, using magneto-active polymers as an example.

Main Methods:

• Review of existing literature on FDM, SLS, and SLA polymer printing.
• Comparative analysis of material selection, process parameters, and property outcomes for the three techniques.
• Discussion of advancements and requirements for 4D printing applications using these methods.

Main Results:

• Detailed comparison of FDM, SLS, and SLA, highlighting their strengths and limitations in polymer part fabrication.
• Correlation established between specific polymer materials, printing conditions, and achievable part properties.
• Identification of key material and process considerations for enabling 4D printing with responsive polymers.

Conclusions:

• The review serves as a guide for selecting appropriate polymer materials and 3D printing techniques (FDM, SLS, SLA) based on application needs.
• It provides insights into the current state-of-the-art for 4D printing of polymer systems.
• Further research into material-process optimization is recommended for advanced additive manufacturing and 4D printing.