Functionally Gradient Materials (FGM) is a new type of inhomogeneous composites .Polymeric Gradient Materials(PGM)is a kind of FGM based on polymer matrix.For its particular morphological structure
functions and potential applications
PGM attracted more scientists’attentions since it is proposed.In this paper
the present status of research on PGM are reviewed including conception
preparation
characterization and application. Moreover
the direction of development of PGM in the future is prospected.