Dear Princy Sharon Please do well to recommend my answer if found helpful.

As of my last knowledge update in January 2022, polyglycolic acid (PGA) has indeed been explored and utilized as a support material in 3D printing, particularly in the field of additive manufacturing. PGA is a biodegradable polymer with properties that make it suitable for certain 3D printing applications.

Here are some reasons why PGA is considered for use in 3D printing:

1. **Biodegradability:** PGA is known for its biodegradable nature, which means it can be broken down by natural processes over time. This feature is advantageous for applications where the support material is intended to be removed after the printing process.

2. **Solubility in Selective Solvents:** PGA is soluble in certain solvents, such as chlorinated hydrocarbons. This solubility allows for the easy removal of support structures after 3D printing, leaving the main printed object intact.

3. **Compatibility with 3D Printing Processes:** PGA can be processed using various 3D printing technologies, including fused deposition modeling (FDM) and other extrusion-based methods.

It's important to note that the use of PGA for 3D printing, including as a support material, may have evolved since my last update. Researchers and companies in the 3D printing field are continually exploring new materials and refining existing ones to enhance the capabilities and versatility of additive manufacturing.

If you're specifically interested in the latest developments regarding PGA in 3D printing, I recommend checking recent scientific literature, industry publications, and updates from manufacturers or research institutions involved in 3D printing technology. Additionally, online databases, conferences, and journals related to materials science and additive manufacturing would be valuable resources for the most up-to-date information on PGA and its applications in 3D printing.