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 (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.