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High-throughput Identification of Bacteria Repellent Polymers for Medical Devices
Published on: November 5, 2016
Inhibiting the transport of hazardous spores using polymer-based solutions.
Paula A Krauter1, D Mark Hoffman, Alexander K Vu
1Lawrence Livermore National Laboratory, Livermore, California 94550, USA. krauter2@llnl.gov
Journal of Occupational and Environmental Hygiene
|September 1, 2007
Summary
Researchers developed polymer solutions to immobilize hazardous biological particles, preventing secondary aerosolization. An amphoteric acrylate polymer, NS-2, effectively bound and inhibited the resuspension of Bacillus atrophaeus spores in wind tunnel tests.
Area of Science:
- Polymer science
- Environmental science
- Public health
Background:
- Hazardous biological particles pose risks through secondary aerosolization and migration.
- Effective containment is crucial for emergency response, remediation, and public health protection.
- Current methods may not adequately prevent the dispersion of aerosolized biothreat agents.
Purpose of the Study:
- To develop and evaluate film-forming polymer solutions for immobilizing aerosolized hazardous biological particles.
- To inhibit secondary aerosolization and migration of biothreat agents.
- To identify optimal polymer characteristics for effective particle adhesion and containment.
Main Methods:
- Developed polymer solutions using acrylates, cellulosics, vinyl polymers, and polyurethanes.
- Formulated solutions with specific performance objectives (adhesion, elasticity, density, drying time, viscosity, surface tension).
- Evaluated particle adhesion and reaerosolization inhibition using wind tunnel experiments with Bacillus atrophaeus spores.
Main Results:
- An amphoteric acrylate polymer solution, NS-2, demonstrated superior performance.
- NS-2 exhibited strong adhesion to Bacillus atrophaeus spores.
- The anionic nature of NS-2 facilitated electrostatic attraction to cationic spores, inhibiting reaerosolization.
- NS-2 possessed low surface tension and performed well in wind tunnel tests.
Conclusions:
- Polymer solutions, particularly NS-2, are effective tools for immobilizing hazardous biological particles.
- NS-2 shows significant potential for emergency response and remediation applications.
- Inhibiting secondary aerosolization of biothreat agents enhances public health protection and cleanup efficiency.
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