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Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
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Responsive polymer welds via solution casting for stabilized self-assembly.

Benny Chen1, Carson T Riche, Marcus Lehmann

  • 1Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, USA.

ACS Applied Materials & Interfaces
|December 15, 2012
PubMed
Summary

We developed a simple solution casting method to create polymer welds for stabilizing self-assembled systems. This technique enhances structural integrity and enables the creation of responsive microstructures for applications like drug delivery.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Microfluidics

Background:

  • Self-assembled systems, such as pillar and microbead arrays, often require stabilization.
  • Existing stabilization methods may lack versatility or responsiveness.

Purpose of the Study:

  • To present a simple solution casting technique for applying polymer welds.
  • To enhance the stability and introduce responsiveness to self-assembled systems.
  • To explore potential applications in drug delivery.

Main Methods:

  • Solution casting of polymer solutions onto self-assembled structures.
  • Varying polymer concentration and molecular weight to tune weld strength.
  • Utilizing responsive polymers (poly(vinyl methyl ether), poly(methacrylic acid)) for stimuli-actuated structures.
  • Employing biocompatible alginate for controlled release studies.

Main Results:

  • Demonstrated successful stabilization of self-assembled pillars and microbeads using polymer welds.
  • Showed that weld strength is tunable via polymer concentration and molecular weight.
  • Fabricated hierarchical, stimuli-responsive microstructures (temperature and pH).
  • Achieved controllable release of microbeads from alginate welds in microfluidic channels.

Conclusions:

  • Solution casting offers a simple and effective method for polymer weld fabrication.
  • Polymer welds enhance the stability and enable stimuli-responsive actuation of self-assembled systems.
  • This technique holds promise for advanced applications, including controlled drug delivery.