| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Society for Biomaterials: Biomaterial Applications in Today’s Industry: Development, Translation & Commercialization
|
| Presentation Title |
Evaluation of Antibacterial Silicon Nitride Powder and Infiltrated Fabrics |
| Author(s) |
Chelsey McMinn, Sherry M. Van Mondfrans, Jackson Hendry, Sean Ronayne, Douglas Hoxworth, Bryan J. McEntire, B. Sonny Bal, Ryan M. Bock |
| On-Site Speaker (Planned) |
Chelsey McMinn |
| Abstract Scope |
As part of an effort to create an active antimicrobial fabric, two silicon nitride powders, α- and β-phase, were morphologically characterized and assessed for antibacterial activity using ASTM E2149. The α-phase powder was infiltrated into spunbond polypropylene fabric using two different processes – a wet slurry method and a commercial dry alternating electric field process. The infiltrated fabrics were characterized using visible light microscopy and scanning electron microscopy prior to being subjected to ASTM E2149 and AATCC TM100 test protocols to determine their respective antibacterial properties. Silicon nitride powders consistently exhibited 2-log or better bacterial colony forming unit reductions, which improved as a function of exposure time and powder concentration. Infiltrated spunbond polypropylene fabrics also demonstrated antibacterial activity that varied as a function of silicon nitride loading on the fabrics, exposure time, and other parameters inherent to the two standard test methods. |