Abstract
This exploratory thesis is oriented to the exploration of the use of polysaccharides for materials synthesis. Energy applications are preferred, and have lead our choices.Two main axis are studied :1)The mineralization of cellulose by metal chlorides, leading to metal oxides. We have demonstrated the versatility of the process by developing the synthesis of some metal oxides ( TiO2, Nb2O5, V2O5, Fe2O5, WO3) or the use of different cellulose sources (filter paper, micro-fibrillated cellulose and bacterial cellulose). These synthesis and complementaries experiments allowed us to improve our comprehension of the synthesis mechanism.2)The synthesis of polysaccharides-ionosilicas composites, which was expected to lead to solid polyelectrolytes. The experiments were unsuccessful, and are briefly described.