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Livestock and poultry feather keratin based coextruded film and method for preparing same

A composite film and keratin technology, applied in the field of composite film and its preparation, can solve the problems of complex process, inability to be widely used and high cost of protein film, and achieve the effects of simple process, simple operation and solving environmental pollution.

Inactive Publication Date: 2008-10-15
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method, the process is complicated, and the cost of the prepared protein membrane is too high, so that this membrane cannot be widely used.

Method used

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  • Livestock and poultry feather keratin based coextruded film and method for preparing same
  • Livestock and poultry feather keratin based coextruded film and method for preparing same
  • Livestock and poultry feather keratin based coextruded film and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The raw materials used for preparing the livestock and poultry hair keratin-based composite film and their weight proportions are as follows:

[0048] Livestock and poultry hair keratin solution with a weight concentration of 10% 20g

[0049] Polyvinyl alcohol 1g

[0050] Glutaraldehyde 0.4g

[0051] Glycerin 0.2g

[0052] In the above-mentioned livestock and poultry hair keratin liquid, the weight concentration of livestock and poultry hair keratin is 10%.

[0053] The preparation method of livestock and poultry hair keratin-based composite film (taking 5g of raw material livestock and poultry hair as an example) is as follows:

[0054] 1. Preparation of keratin stock solution by reduction hydrolysis

[0055] Reduction hydrolysis method: wash and dry livestock and poultry hair 5g, mix with water 90g and sodium sulfite 4g, stir at room temperature for 0.5 to 2 hours, filter out livestock and poultry hair, and wash with water, add 75g of water and 3g of sodium hydrox...

Embodiment 2

[0063] The raw materials used for preparing the livestock and poultry hair keratin-based composite film and their weight proportions are as follows:

[0064] Livestock and poultry hair keratin solution 10g

[0065] Polyvinyl alcohol 1g

[0066] In the above-mentioned livestock and poultry hair keratin liquid, the weight concentration of livestock and poultry hair keratin is 10%. The preparation method of the livestock and poultry hair keratin-based composite film is the same as that of Example 1, and a livestock and poultry hair keratin-based composite film is prepared.

Embodiment 3

[0068] The raw materials used for preparing the livestock and poultry hair keratin-based composite film and their weight proportions are as follows:

[0069] Livestock and poultry hair keratin solution 29g

[0070] Polyvinyl alcohol 1g

[0071] Glutaraldehyde 1g

[0072] Glycerin 0.5g

[0073] In the above-mentioned livestock and poultry hair keratin liquid, the weight concentration of livestock and poultry hair keratin is 10%. The preparation method of the livestock and poultry hair keratin-based composite film is the same as that of Example 1, and a livestock and poultry hair keratin-based composite film is prepared.

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Abstract

The invention relates to an animal wool keratin based composite membrane. The compositions by weight portion of the animal wool keratin based composite membrane are: 10 to 29 portions of animal wool keratin solution, 1 portion of filmerformer, 0 to 1 portion of cross linker and 0 to 0.5 portion of plasticizer. The preparation method comprises the following processing steps of: preparation of keratin stock solution by utilization of animal feathers through the reduction hydrolytic method or the oxydrolysis method, ultrasonic treatment of the keratin stock solution, preparation of composite solution and preparation of the membrane. The method uses abandoned animal feathers as raw materials and adopts ultrasonic hydrolyzation to prepare the keratin stock solution to prepare the keratin composite membrane after mixing of the keratin stock solution and polyvinyl alcohol. The preparation method has the advantages of simple technique, simple and convenient operation and so on; the keratin composite membrane prepared by adoption of the preparation method has high tensile strength and low elongation at break, can be degraded and can be used as materials for manufacturing a package; the package is buried underground, can be degraded and converted into organic fertilizer and then absorbed by crops and solve the problem of environmental pollution of plastic bags.

Description

technical field [0001] The invention relates to a composite film made of livestock and poultry hair keratin prepared by a reduction ultrasonic hydrolysis method or an oxidation ultrasonic hydrolysis method and a preparation method thereof. Background technique [0002] The extensive application of petroleum-based plastic films such as packaging bags has produced a large amount of waste plastics. Because ordinary plastics cannot be biodegraded, it takes about 200 years to decompose under normal temperature and humidity, which affects the absorption of nutrients and water by crops. Animals will die if they eat them by mistake, endangering the ecological balance and causing white pollution. [0003] In recent years, biodegradable plastics have received widespread attention. At present, the raw materials used in biodegradable plastics are mainly bio-based polymers such as starch and cellulose. Three types of green plastics such as polylactic acid, succinic acid copolymer and s...

Claims

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Application Information

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IPC IPC(8): C08L89/04C08K5/07C08K5/053C08J5/18
Inventor 魏俊发李闻欣石先莹陈宗良
Owner SHAANXI NORMAL UNIV
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