Improvement of mechanical-antibacterial performances of AR/PMMA with TiO2 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 (TiO2) 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 TiO2 and HPQM and improved the antibacterial performance of AR(t-TiO2)/PMMA and AR(t-HPQM)/PMMA blend.