Controlling biofilm formation with an N-halamine-based polymeric additive

Area of Science:

• Polymer Chemistry
• Materials Science
• Antimicrobial Agents

Background:

• N-halamine polymers offer potent antimicrobial properties.
• Polyurethane is a versatile material with various applications.
• Preventing bacterial colonization and biofilm formation is crucial for material longevity and safety.

Purpose of the Study:

• To synthesize and characterize a new N-halamine-based polymeric additive, APA-1.
• To incorporate APA-1 into polyurethane to create antimicrobial materials.
• To evaluate the efficacy of APA-1-containing polyurethane against Staphylococcus epidermidis.

Main Methods:

• Synthesis and structural confirmation of APA-1 using iodometric titration and NMR spectroscopy.
• Incorporation of APA-1 into polyurethane via solvent casting.
• Antimicrobial activity assessment using zone of inhibition assays and in vitro colonization/biofilm formation studies.

Main Results:

• APA-1 was successfully synthesized and characterized.
• APA-1-containing polyurethane exhibited significant antimicrobial activity against Staphylococcus epidermidis.
• Antimicrobial effect was achieved through direct contact, with no leaching of APA-1.
• Colonization and biofilm formation by S. epidermidis were prevented for at least 28 days.

Conclusions:

• APA-1 is an effective N-halamine additive for creating durable antimicrobial polyurethane materials.
• The developed material demonstrates sustained contact-based inactivation of S. epidermidis.
• This technology holds promise for applications requiring long-term prevention of bacterial contamination.