| Grant number: | 08/00285-7 |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): | May 01, 2008 |
| Effective date (End): | April 30, 2012 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry - Analytical Chemistry |
| Principal researcher: | Elias Basile Tambourgi |
| Grantee: | Alexandre Tadeu Paulino |
| Home Institution: | Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil |
Abstract Polysaccharide-based hydrogels are a group of composites widely applied in controlled drug release systems, pharmacy, biotechnology, biomedicine, and wastewater and water treatment. On the other hand, polysaccharide-based hydrogels with magnetic properties are excellent composites comparatively to those without magnetization. Nevertheless, magnetic hydrogels have demonstrated to be more efficient and selective and quicker in applications. In addition, magnetic hydrogels may be applied as precursors in cancer cell treatment, enzyme immobilization, magnetic biosensor production, and nanoparticle production. In this work, it will be carried out the synthesis of hydrogels based on chitosan-co-poly(acrylic acid), modified malto-dextrin-co-poly(acrylamide), and modified arabic gum-co-poly(acrylamide), both in the presence and the absence of magnetite (Fe3O4). These hydrogels, either with or without magnetic properties, will be characterized by swelling tests, Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (13C NMR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), magnetization curves, and Mössbauer spectroscopy. The obtained hydrogels will be applied in the removal of heavy metals and dyes from wastewater and water. In addition, these hydrogels may be applicable to either large scale wastewater and water treatment or to magnetic biosensor production, as well as to nanoparticle production. (AU) | |