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Degradable environment-friendly material for food packaging and preparation method thereof

A technology for environmental protection materials and food packaging, applied in the field of materials, can solve the problems of poor toughness and easy mildew of starch-based plastics, and achieve the effect of excellent performance indicators

Inactive Publication Date: 2017-03-15
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, starch-based plastics have poor toughness and are prone to mildew under natural conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A degradable environmental protection material for food packaging, the main raw materials in parts by weight are: 20 parts of pectin, 30 parts of polylactic acid, 8 parts of cornstarch, 5 parts of acanthopanax, 2 parts of moss, 1 part of loofah vine, 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 environmental protection material for food packaging, the specific steps are:

[0018] First, mix pectin, polylactic acid, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly, at a stirring speed of 300r / min, for 1h, and at a temperature of 45 ℃, and then conduct supercritical carbon dioxide extraction of Wujiapi, Moss aspergillus, and Luffa vine, and add the extracted mixture and the stirred mixture to a twin-screw extruder for granulation to obtain a degradable and environmentally friendly product for food packaging. Material. ...

Embodiment 2

[0020] A degradable environmental protection material for food packaging, the main raw materials in parts by weight are: 23 parts of pectin, 32 parts of polylactic acid, 10 parts of cornstarch, 6 parts of Wujiapi, 2 parts of moss aspergillus, 1 part of loofah vine, 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 environmental protection material for food packaging, the specific steps are:

[0022] First, mix pectin, polylactic acid, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly, at a stirring speed of 300r / min, for 1h, and at a temperature of 45 ℃, and then conduct supercritical carbon dioxide extraction of Wujiapi, Moss aspergillus, and Luffa vine, and add the extracted mixture and the stirred mixture to a twin-screw extruder for granulation to obtain a degradable and environmentally friendly product for food packaging. Mat...

Embodiment 3

[0024] A degradable environmental protection material for food packaging, the main raw materials in parts by weight are: 25 parts of pectin, 35 parts of polylactic acid, 12 parts of cornstarch, 7 parts of Wujiapi, 3 parts of moss aspergillus, 3 parts of loofah vine, 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 environmental protection material for food packaging, the specific steps are:

[0026] First, mix pectin, polylactic acid, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid evenly, with a stirring speed of 450r / min, a stirring time of 1.5h, and a stirring temperature of At 47°C, supercritical carbon dioxide extraction is performed on the skin of Wujiapi, Moss aspergillus, and Luffa vine, and the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation to obtain a degradable product for food p...

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Abstract

The invention discloses a degradable environment-friendly material for food packaging and a preparation method thereof. The degradable environment-friendly material is prepared by, by weight, 20-30 parts of pectin, 30-40 parts of polylactic acid, 8-15 parts of corn starch, 5-8 parts of cortex acanthopanacis, 2-4 parts of dicranum scoparium, 1-5 parts of luffa stem, 0.5-0.8 part of sodium stearate, 2-6 parts of D-isoleucine, 4-8 parts of ethyl acetate, and 0.5-0.9 part of chlorogenic acid. Simulated biological decomposition tests, according to the standard of GB / T 19276.1-2003, of the degradable environment-friendly material in a natural water-containing environment show that the biological decomposition rate of the degradable environment-friendly material can reach up to 98%, and the light degradation ratio of the material reaches up to 95%, and other performance indexes of the material are excellent.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a degradable environment-friendly material for food packaging and a preparation method thereof. Background technique [0002] For a long time, the plastic products we use, such as agricultural film materials, are disposable products made of petroleum synthetic resins, such as polyvinyl chloride, polypropylene, polyethylene, etc., and are discarded as garbage after use. Some are discarded everywhere, and some are buried or burned, which greatly wastes resources. These plastic products take about 200 years to be decomposed. Harmful substances produced during its processing directly pollute the air and water sources. These discarded water-retaining films also caused great damage to the soil structure of the land, directly leading to a series of adverse consequences such as land production reduction. [0003] The degradable plastics currently developed and researched are mainly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L5/06C08L3/02C08K5/00C08K5/098C08K5/101B65D65/46
CPCB65D65/466C08L67/04C08L2201/06C08L2205/03C08L5/06C08L3/02C08K5/00C08K5/098C08K5/101Y02A40/90Y02P20/54Y02W90/10
Inventor 不公告发明人
Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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