Perspectives on antibacterial performance of silver nanoparticle-loaded three-dimensional polymeric constructs

Area of Science:

• Materials Science
• Biomaterials Engineering
• Nanotechnology

Background:

• Silver nanoparticle (AgNP)-loaded polymeric constructs are explored for drug delivery, wound dressings, and antibiofouling applications.
• Effective integration of AgNPs into polymers is crucial for desired functionalities.

Purpose of the Study:

• To fabricate and evaluate AgNP-loaded polymeric materials for antimicrobial efficacy against Escherichia coli.
• To critically assess literature reporting on the antibacterial performance of AgNP-loaded materials.

Main Methods:

• Fabrication of AgNP-loaded polymeric constructs using various methods.
• H2O(v) plasma surface modification to enhance wettability and AgNP incorporation.
• Compositional analysis and water contact angle goniometry.

Main Results:

• AgNP incorporation (surface vs. bulk) depends heavily on the fabrication method.
• The manner of AgNP incorporation directly impacts the release of Ag+ and biocidal performance.
• Fabricated materials did not meet healthcare standards for antimicrobial behavior.

Conclusions:

• Significant disparities exist in the quantitative analysis and reporting of antibacterial efficacy in the literature.
• Recommendations for best practices are provided to improve the evaluation of AgNP-loaded materials for medical applications.