Improvement of mechanical-antibacterial performances of AR/PMMA with TiO ₂ and HPQM treated by N-2(aminoethyl)-3-aminopropyl trimethoxysilane

The mechanical and antibacterial properties of acrylic rubber/poly(methyl methacrylate) (AR/PMMA) blend at 10 to 50 wt% of AR content with non-treated and treated titanium dioxide (TiO ₂ ) and 2-Hydroxypropyl-3-piperazinyl-quinoline carboxylic acid methacrylate (HPQM) by N-2(aminoethyl)-3-aminopropyl trimethoxysilane were studied. The antibacterial property against Escherichia coli was evaluated. The results found that the mechanical properties of AR ^t-TiO2 /PMMA and AR ^t-HPQM /PMMA blend were higher than that of the AR ^TiO2 /PMMA and AR ^HPQM /PMMA blend. For antibacterial property, the AR ^HPQM /PMMA and AR ^t-HPQM /PMMA blend could act as the antibacterial material, while the AR ^TiO2 /PMMA blend did not show. However, the AR ^t-TiO2 /PMMA blend could inhibit bacterial cell growth with 10 to 30 wt% of AR content. The recommended compositions of AR ^t-TiO2 /PMMA blend, which improved both mechanical and antibacterial properties, were 10 to 30 wt% of AR and were 10 to 50 wt% of AR for AR ^t-HPQM /PMMA. Moreover, the UV radiation increased the antibacterial properties by the destruction of the interaction in treated TiO ₂ and HPQM and improved the antibacterial performance of AR ^t-TiO2 /PMMA and AR ^t-HPQM /PMMA blend.