Non-Resorbable Nanocomposite Membranes for Guided Bone Regeneration Based On Polysulfone-Quartz Fiber Grafted with Nano-TiO 2

• Published in: Nanomaterials (Basel, Switzerland) Switzerland), 2019-07, Vol.9 (7)
• Main Authors: Nechifor, Gheorghe, Eftimie Totu, Eugenia, Nechifor, Aurelia Cristina, Isildak, Ibrahim, Oprea, Ovidiu, Cristache, Corina Marilena
• Format: Article
• Language: English
• ISSN: 2079-4991; 2079-4991

The polymer-inorganic nanoparticles composite membranes are the latest solutions for multiple physicochemical resistance and selectivity requirements of membrane processes. This paper presents the production of polysulfone-silica microfiber grafted with titanium dioxide nanoparticles (PSf-SiO -TiO ) composite membranes. Silica microfiber of length 150-200 μm and diameter 12-15 μm were grafted with titanium dioxide nanoparticles, which aggregated as microspheres of 1-3 μm, applying the sol-gel method. The SiO microfibers grafted with nano-TiO were used to prepare 12% polysulfone-based nanocomposite membranes in N-methyl pyrrolidone through the inversion phase method by evaporation. The obtained nanocomposite membranes, PSf-SiO -TiO , have flux characteristics, retention, mechanical characteristics, and chemical oxidation resistance superior to both the polysulfone integral polymer membranes and the PSf-SiO composite membranes. The antimicrobial tests highlighted the inhibitory effect of the PSf-SiO -TiO composite membranes on five Gram (-) microorganisms and did not allow the proliferation of strain, proving that they are suitable for usage in the oral environment. The designed membrane met the required characteristics for application as a functional barrier in guided bone regeneration.