the progresses of shape memory polymer materials of poly lactic acid are reviewed.The shape memory effects and memory mechanism of polymer materials are introduced.In terms of the different components
the shape memory polymer materials of poly lactic acid can be divided into three types
polymers based on poly lactic acid
based on poly lactic acid copolymers and based on poly lactic acid/inorganic materials.The behaviors of memory effects and biodegradation are discussed.Finally
the applications of poly lactic acid are introduced and the future developments of the polymer materials are prospected.