Scalable Miniemulsion Polymerization of Methyl Methacrylate (MMA) in Continuous Flow

Area of Science:

• Chemical Engineering
• Polymer Science
• Materials Science

Background:

• Miniemulsion polymerization offers precise control over polymer particle size and morphology.
• Scalability challenges have historically limited the industrial application of miniemulsion polymerization.
• Continuous flow reactors are desirable for industrial processes but face issues like reactor fouling.

Purpose of the Study:

• To develop a scalable methodology for miniemulsion polymerization.
• To address the limitations of continuous flow reactors in emulsion polymerization.
• To achieve high yields of well-defined polymer particles using a continuous process.

Main Methods:

• Utilized a spinning disk reactor (SDR) for scalable miniemulsification of methyl methacrylate (MMA).
• Employed agitated continuous flow reactors (e.g., ATR) for the polymerization step, preventing fouling.
• Integrated SDR and continuous flow reactors for a complete scalable miniemulsion polymerization process.

Main Results:

• Achieved scalable miniemulsification with droplet sizes of 154 nm and a PDI of 0.17 using the SDR.
• Synthesized over 100g of polymer particles with an average size of 170 nm and a PDI of 0.10.
• Demonstrated stable reactor operation over an entire workday with a space-time yield of 53 g/Lh, significantly higher than previous methods.

Conclusions:

• The developed methodology enables scalable miniemulsion polymerization of MMA.
• The combination of spinning disk and continuous flow reactors overcomes previous limitations.
• This approach offers a highly efficient and stable process for producing well-defined polymer particles.