Degradable material for food package and preparation method of degradable material for food package
A technology for degradable materials and food packaging, applied in the field of degradable materials for food packaging and its preparation, can solve the problems of poor toughness and easy mildew of starch-based plastics, and achieve the effect of excellent performance indicators
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Embodiment 1
[0016] A degradable material for food packaging, the main raw materials in parts by weight are: 20 parts of fish float glue, 30 parts of polylactic acid, 8 parts of sweet potato starch, 5 parts of Wujia skin, 2 parts of moss aspergillus, 1 part of plantain, 0.5 parts of sodium stearate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, and 0.5 parts of chlorogenic acid.
[0017] A method for preparing a degradable material for food packaging, the specific steps are:
[0018] First, mix fish float glue, polylactic acid, sweet potato starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid at a stirring speed of 300 r / min for 1 hour and a stirring temperature of 45 ℃, followed by supercritical carbon dioxide extraction of Radix Wujiapi, Moss aspergillus, and Plantain, and the extracted mixture and the stirred mixture were added to a twin-screw extruder for granulation to obtain a degradable product for food packaging. Material.
Embodiment 2
[0020] A degradable material for food packaging, the main raw materials in parts by weight are: 23 parts of fish float glue, 32 parts of polylactic acid, 10 parts of sweet potato starch, 6 parts of Wujia skin, 2 parts of moss aspergillus, 1 part of plantain, 0.5 parts of sodium stearate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, and 0.5 parts of chlorogenic acid.
[0021] A method for preparing a degradable material for food packaging, the specific steps are:
[0022] First, mix fish float glue, polylactic acid, sweet potato starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid at a stirring speed of 300 r / min for 1 hour and a stirring temperature of 45 ℃, followed by supercritical carbon dioxide extraction of Radix Wujiapi, Moss aspergillus, and Plantain, and the extracted mixture and the stirred mixture were added to a twin-screw extruder for granulation to obtain a degradable product for food packaging. Material.
Embodiment 3
[0024] A degradable material for food packaging, the main raw materials in parts by weight are: 25 parts of fish float glue, 35 parts of polylactic acid, 12 parts of sweet potato starch, 7 parts of Wujiapi, 3 parts of moss aspergillus, 3 parts of plantain, 0.7 parts of sodium stearate, 4 parts of D-isoleucine, 6 parts of ethyl acetate, and 0.7 parts of chlorogenic acid.
[0025] A method for preparing a degradable material for food packaging, the specific steps are:
[0026] First, mix fish float glue, polylactic acid, sweet potato starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid at a stirring speed of 450r / min for 1.5 hours and a stirring temperature of At 47°C, supercritical carbon dioxide extraction is then performed on the bark of Acanthopanax, Quercus, and Plantain, and the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation to obtain edible packaging. degradable material.
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