| abstract |
The invention relates to a fully degradable membrane material and preparation and application thereof, wherein the membrane material is prepared from the following raw materials in parts by weight: 50-70 parts of PLA, 30-50 parts of natural starch, 8-20 parts of PBAT, 2-6 parts of a functional stabilizer, 6-15 parts of a plasticizer, 1-5 parts of a compatilizer and 0.5-2 parts of an anti-hydrolysis agent; when in preparation, the PLA, the natural starch, the PBAT and the functional stabilizer are melted and blended at the temperature of 180-200 ℃ according to the weight part, the blending time is 10-20 minutes, then other auxiliary agents are added according to the weight part, the mixture is blended at the temperature of 170-180 ℃ for 5-10 minutes, and then the mixture is extruded and granulated. The material of the invention can be used for preparing packaging films, mulching films, preservative films and sticking films. Compared with the prior art, the fully degradable film material has good film forming property, excellent flexibility and environment-friendly raw materials, and the prepared film material has good heat insulation, moisture resistance, bacteria resistance, water resistance and the like, and has good application prospect. |