Abstract The synthesis of poly (2-ethyl-2-oxazoline)-b-linear poly (ethylenimine)(PEtOx-b- LPEI) copolymers by selective basic hydrolysis of PEtOx-b-poly (2-H-2-oxazoline)(PEtOx-b- PHOx) is described. For this purpose, an easy method for the preparation of the 2-H-2- oxazoline (HOx) monomer was developed. Based on the microwave-assisted polymerization kinetics for this monomer, PEtOx-b-PHOx copolymers were prepared. ...