Gradient copolymer is a new kind of polymers emerging with the living polymerization techniques. The unique structural feature is the gradual variation of monomeric compositions along the polymeric chains

distinguishing from random and block copolymers. The current paper reviews the preparation techniques

characterization methods

physical properties and potential applications of gradient copolymers. Kinetic model-based monomer feeding policy in controlled/living radical polymerization presents a sophisticated method to precisely synthesize gradient copolymers by design

while many-shot monomer feeding policy in RAFT emulsion polymerization is a facile and efficient technique to tailor-make compositional gradient copolymers. Compared random and block copolymers

gradient copolymers exhibit different self-assembly behaviors in both solution and bulk

resulting in unique interfacial

thermal and mechanical properties. Composition gradient is expected to be a new parameter to finely tune the properties of polymers. Gradient copolymers have shown promising applications in the phase compatibilizers

damping materials and multi-shape memory materials.