Organic–inorganic hybrid coatings containing Silver-ions were prepared by sol-gel processes and applied as thin layers onto PE and PVC films. The antibacterial activity of the coated films was tested against Gram-negative and Gram-positive bacteria The effects of several factors (O/I ratio, catalyst, Ag+ conc., etc.) were investigated. A high antibacterial activity (more than 6 log reduction within 6 hours) was observed for coatings with an O/I weight ratio of 80:20 and 5 wt% of Silver salt. A good durability of the antibacterial activity in contact with aqueous solution was also observed and confirmed by measurements of Ag+ ion release over the long period.
Silver-doped organic-inorganic hybrid coatings with antibacterial activity / M. Toselli; F. Pilati; M. Bondi; S. De Niederhausern; R. Iseppi; M. Marini; C. Sabia. - ELETTRONICO. - (2007), pp. 245-245. (Intervento presentato al convegno European Polymer Congress 2007 (EPF2007) tenutosi a Portoroz (Slovenia) nel 2-6 july 2007).
Silver-doped organic-inorganic hybrid coatings with antibacterial activity.
TOSELLI, MAURIZIO;
2007
Abstract
Organic–inorganic hybrid coatings containing Silver-ions were prepared by sol-gel processes and applied as thin layers onto PE and PVC films. The antibacterial activity of the coated films was tested against Gram-negative and Gram-positive bacteria The effects of several factors (O/I ratio, catalyst, Ag+ conc., etc.) were investigated. A high antibacterial activity (more than 6 log reduction within 6 hours) was observed for coatings with an O/I weight ratio of 80:20 and 5 wt% of Silver salt. A good durability of the antibacterial activity in contact with aqueous solution was also observed and confirmed by measurements of Ag+ ion release over the long period.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
