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dc.contributor.authorThokala, Nikhil
dc.contributor.authorKealey, Carmel
dc.contributor.authorKennedy, James
dc.contributor.authorBrady, Damien B.
dc.contributor.authorFarrell, Joseph
dc.identifier.citationThokala, N., Kealey, C., Kennedy, J., Brady, D.B., Farrell, J. (2018). Comparative activity of silver based antimicrobial composites for urinary catheters. International Journal of Microbial Agents. 52(2): 166-171.
dc.identifier.otherArticles - Faculty of Science & Health AITen_US
dc.description.abstractBiomedical polymers are an integral component in a wide range of medical devices because of their many desirable properties. However, extensive use of polymer materials in medical devices has been associated with an increasing incidence of patient infections. Efforts to address this issue have included incorporating antimicrobial additives to develop novel antimicrobial polymeric materials. Silver, with its high toxicity towards bacteria, oligodynamic effect and good thermal stability, has been employed as an additive for polymeric medical devices. In the present study, commercially available elemental (Biogate) and ionic (Ultrafresh 16) silver additives were incorporated into a Polyamide 11 (PA 11) matrix using a compression press. These polymer composites were evaluated for their antimicrobial and ion-release properties. Elemental silver composites were shown to retain their antimicrobial properties for extended periods and actively released silver ions for 84 days; whereas ionic silver composites lost their ion-release activity and, therefore, their antibacterial activity after 56 days. Bacterial log reduction units of 3.87 for ionic silver and 2.41 for elemental silver were identified within 24 h, when tested in accordance with the ISO 22196 test standard; this indicates that ionic silver is more efficient for short-term applications than elemental silver.en_US
dc.relation.ispartofInternational Journal of Microbial Agentsen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland*
dc.subjectElemental silveren_US
dc.subjectIonic silveren_US
dc.subjectGlass carrieren_US
dc.subjectPolymer/antimicrobial compositesen_US
dc.subjectAntimicrobial efficacyen_US
dc.subjectSilver ion releaseen_US
dc.titleComparative activity of silver based antimicrobial composites for urinary catheters.en_US
dc.rights.accessOpen Accessen_US
dc.subject.departmentFaculty of Science & Health AITen_US

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Attribution-NonCommercial-NoDerivs 3.0 Ireland
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Ireland