The invention belongs to the technical field of polymer material preparation, and specifically discloses a PLA/PBAT film, a preparation method and application thereof. The method comprises the following steps: mixing PLA, PBAT resin and additives, extruding and granulating through a twin-screw extruder, then melt-extruding by a single-screw cast film machine to form a cast sheet on a casting roll, and adjusting the rotating speeds of a fixed roll and a moving roll for longitudinal stretching to obtain a uniaxially longitudinally stretched PLA/PBAT film. The invention induces oriented crystallization by stretching at a certain temperature, greatly improving the crystallinity of the film, and meanwhile the PLA/PBAT film has high tensile strength and elongation at break in the stretching direction. No additives such as nucleating agents are added in the technology, avoiding the impact on the transparency of the film. The prepared film is fully biodegradable, and the preparation technology is continuous, simple, safe and environmentally friendly, and can be widely used in packaging and other fields.
Country Code: CN
Application Number: CN202010701633.0
