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Biodegradable environment-friendly material for food package 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: 2017-05-10
HENAN SHUIJINGTOU CULTURAL MEDIA 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 and environmentally friendly 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 corn starch, 5 parts of Wujia skin, 2 parts of celery, 1 part of loofah vine, stearin 0.5 parts of sodium nitrate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, 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 fish float glue, polylactic acid, corn 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 Wujiapi, celery, and loofah vine, and adding the extracted mixture and the stirred mixture to a twin-screw extruder for granulation to obtain degradable and environmentally friendly materials for food packagi...

Embodiment 2

[0020] A degradable and environmentally friendly 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 corn starch, 6 parts of Wujia skin, 2 parts of celery, 1 part of loofah vine, stearin 0.5 parts of sodium nitrate, 2 parts of D-isoleucine, 4 parts of ethyl acetate, 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 fish float glue, polylactic acid, corn 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 Wujiapi, celery, and loofah vine, and adding the extracted mixture and the stirred mixture to a twin-screw extruder for granulation to obtain degradable and environmentally friendly materials for food packag...

Embodiment 3

[0024] A degradable and environmentally friendly 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 corn starch, 7 parts of Wujia skin, 3 parts of celery, 3 parts of loofah vine, stearin 0.7 parts of sodium nitrate, 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 fish float glue, polylactic acid, corn starch, sodium stearate, D-isoleucine, ethyl acetate, and chlorogenic acid at a stirring speed of 450r / min for 1.5h at a stirring temperature of 47°C, then supercritical carbon dioxide extraction of Wujiapi, celery, and loofah vine, the extracted mixture and the stirred mixture are added to a twin-screw extruder for granulation to obtain degradable and environmentally friendly materials for food packaging . ...

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Abstract

The invention discloses a biodegradable environment-friendly material for food package and a preparation method thereof. The biodegradable environment-friendly material for food package is mainly prepared from, by weight, 20-30 parts of float glue, 30-40 parts of polylactic acid, 8-15 parts of corn starch, 5-8 parts of cortex acanthopanacis, 2-4 parts of celery, 1-5 parts of towel gourd 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. The obtained biodegradable environment-friendly material for food package meets the standard GB / T 19276.1-2003, the biological degradation process in a natural water environment is simulated, it is tested that the highest biological degradation rate of the material can be up to 98%, the highest photodegradation rate is up to 95%, and other performance indicators 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): C08L67/04C08L89/00C08L3/02C08K5/098C08K5/17C08K5/101C08K5/134
CPCC08L67/04C08L2201/06C08L2205/03C08L89/00C08L3/02C08K5/098C08K5/17C08K5/101C08K5/1345Y02P20/54
Inventor 不公告发明人
Owner HENAN SHUIJINGTOU CULTURAL MEDIA CO LTD
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