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Continuous production of polymer nanoparticles using a membrane-based flow cell.

Zhengnan Yang1, Dona Foster1, Ali Dhinojwala1

  • 1Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA.

Journal of Colloid and Interface Science
|April 28, 2017
PubMed
Summary

This study introduces a surfactant-free method for producing polymer nanoparticles using a continuous membrane system. This technique yields high-purity nanoparticles with narrow size distributions, ideal for therapeutic delivery applications.

Keywords:
MembranePolymer nanoparticlesSolvent-shifting

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Nanotechnology

Background:

  • Producing polymer nanoparticles with high purity and narrow size distributions is crucial for biomedical applications, particularly for drug delivery systems.
  • Existing methods for nanoparticle synthesis often involve surfactants or result in broad size distributions, limiting their therapeutic utility.

Purpose of the Study:

  • To demonstrate a novel, surfactant-free method for continuous polymer nanoparticle production.
  • To investigate the influence of process parameters on nanoparticle size and distribution.
  • To produce polymer nanoparticles suitable for advanced biomedical applications.

Main Methods:

  • Utilized a continuous membrane-based tangential flow cell with a regenerated cellulose (RC) membrane.
  • Employed co-current streams of water and polymethylmethacrylate (PMMA)/acetone/water solution.
  • Controlled nanoparticle precipitation by adjusting water diffusion across the membrane to induce phase separation.

Main Results:

  • Successfully produced surfactant-free polymer nanoparticles (PMMA) via continuous membrane processing.
  • Demonstrated that nanoparticle size can be tuned by adjusting PMMA feed concentration and water diffusion rate.
  • Achieved significantly narrower size distributions compared to batch precipitation methods (drop-wise addition and dialysis).

Conclusions:

  • Continuous membrane-based tangential flow is an effective method for producing high-purity, narrow-polydispersity polymer nanoparticles.
  • The developed technique offers a scalable and efficient approach for synthesizing nanoparticles for therapeutic delivery.
  • This method overcomes limitations of traditional techniques, paving the way for improved biomedical nanocarriers.