Advances of the graft copolymers of pullulan as pharmaceutical carriers

Graft copolymerization is one of the most effective methods to improve the performance of pullulan and extend its applications. This paper attempts to review the recent progresses in the preparation and application of graft copolymers of pullulan as pharmaceutical carriers from different synthesized polymers and the properties of graft copolymers of pullulan. The problems of pullulan based graft copolymers in drug release system are expounded, and the future development in this field direction is presented.