Polymers consist of repeating units or groups (monomers). Homopolymers consist of only one type of group and copolymers contain more than one type of monomer. The nature of the monomers and the binding type in the polymer chains define the properties of the polymers, which may include changes with pH and temperature. The use of different monomers allows the development of polymers for applications such as gene delivery or the formation of polymeric vesicles (polymersomes), the objectives of this thesis. In order to develop polymeric materials for these applications, several polymers and copolymers were synthesized using RAFT (Reversible Addition-Fragmentation Chain Transfer), one of the variants of the Radical Reversible Deactivation Polymerization (RRDP) technique. Variable proportions of 2-(dimethylamine) ethyl methacrylate (DMAEMA), methyl methacrylate (MMA) and styrene (S) allowed the synthesis of several materials.