Synthesis of dodecanoate sodium alginate and study its properties as a carrier of ibuprofen

Tow compounds have been synthesised: tetra butyl ammonium alginate and dodecanoate sodium alginate ester. The synthesis of compound (1) by transferring sodium alginate to Alginic acid and then adjusted by tetra-butyl ammonium hydroxide. The compound (2) was synthesised from tetra-butyl ammonium alginate according to Fisherest erification, between tetra-butylammonium alginate and dodecanoic acid and using (Amberlyst-15) as a hetrogeneous acid catalyst, and then the product react with sodium carbonate.