ADHESION OF DIFFERENT BACTERIAL STRAINS TO LOW-TEMPERATURE PLASMA-TREATED BIOMEDICAL PVC CATHETER SURFACES

In this study, firstly five different bacteria (i.e. Coagulas positive and negative staphylocaccus, Streptococcus pyogene, Escherichia coli, Pseudomonas aeruginosae) with their different strains were isolated a nd used. The contact angle, surface free energy, p-xylene adhesion, an d zeta potential of these bacteria were in the range of 43-69 deg, 45. 4-61.8 erg cm(-2), 2.3-80.3%, and from -650.2 to +17.5 mV, respectivel y. Most of the bacteria were negatively charged. Attachment of these b acteria to PVC catheter and its DMAEMA- and AAc-plasma treated forms w ere investigated. Bacterial attachment to the hydrophobic PVC catheter was high. Both plasma treatments caused significant drops in bacteria l attachment in most of the cases. The effects of AAc-plasma treatment was more significant.