Simple click reactions on polymer surfaces leading to antimicrobial behavior

Area of Science:

• Polymer Science
• Surface Chemistry
• Biomaterials Engineering

Background:

• Aliphatic polymer surfaces often require functionalization for specific applications.
• Developing efficient and clean methods for surface modification is crucial.
• Antimicrobial surfaces are needed to combat microbial contamination and biofilm formation.

Purpose of the Study:

• To develop a simple and versatile platform for modifying aliphatic polymer surfaces.
• To covalently attach ampicillin (AMP) to polyethylene (PE) and polypropylene (PP) substrates.
• To evaluate the antimicrobial efficacy of the functionalized polymer surfaces.

Main Methods:

• Combined microwave plasma reactions with maleic anhydride and alkyne click chemistry.
• Utilized click chemistry for covalent attachment of ampicillin (AMP).
• Tested the antimicrobial activity against Staphylococcus aureus (S. aureus).

Main Results:

• Successfully functionalized PE and PP polymer surfaces with ampicillin (AMP).
• Achieved significant reduction in bacterial growth, ranging from 97% to 99.8% against S. aureus.
• Demonstrated a clean and simple process with no adverse effects on bulk polymer properties.

Conclusions:

• The developed method provides a versatile platform for polymer surface modification.
• Covalently attached ampicillin creates highly effective antimicrobial surfaces.
• This technique offers a clean, simple, and broadly applicable approach for polymer functionalization.