CN106317906A - Production method of gelatin protein-based degradable plastic film - Google Patents
Production method of gelatin protein-based degradable plastic film Download PDFInfo
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- CN106317906A CN106317906A CN201510342397.7A CN201510342397A CN106317906A CN 106317906 A CN106317906 A CN 106317906A CN 201510342397 A CN201510342397 A CN 201510342397A CN 106317906 A CN106317906 A CN 106317906A
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Abstract
The invention discloses a production method of a gelatin protein-based degradable plastic film. The method comprises the following steps: 1, preparing a solution: adding gelatin, Na2SiF6 and an aqueous glycerin and sorbitol solution into a 3-neck flask, placing the 3-neck flask in a 80-90 DEG C water bath, carrying out high-speed stirring dispersion for 0.5-1 h, and adjusting the pH value of the above obtained solution to 5.0-6.0 in order to prepare a uniformly dispersed protein solution; and 2, placing the uniformly dispersed protein solution in a 100 DEG C oven, and carrying out solution tape casting to form the film. A mass ratio of gelatin to Na2SiF6 to glycerin to sorbitol is 1:1:3:2. The pH value is adjusted by using hydrochloric acid and Na2CO3. The tensile strength of the film has a rapid rising trend, and when the mass fraction of a plasticizer is greater than 20%, the elongation at break of the plastic film is large, and the film has excellent toughness. The degradability of the protein-based plastic film in 20 d is greater than 15%, so the protein-based plastic film has very good degradability.
Description
Technical field
The present invention relates to Material Field, the preparation method of a kind of Glutin Protein-based Degradable Plastic Film.
Background technology
At present, whole world plastics year consumption figure reaches 2.4 hundred million tons, and annual growth rate is about 4%;Chinese festiva consumer plastic more than 4,000 ten thousand tons, a few years from now on will increase with the average speed of annual at least 8%.But, recoverable or degredation plastic only account for the least ratio.Currently, the research of degradation plastic has focused largely on starch conversion aspect, and the research of protein-based plastics to be lacked relatively.But, there is the shortcomings self being difficult to overcome in starch plastics.As mechanical strength is inadequate, it is impossible to meeting actual application requirement, poor water resistance, the performance of material is affected big by ambient humidity, it is impossible to meet its round-the-clock application conditions etc..
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of Glutin Protein-based Degradable Plastic Film.
The technical scheme is that and be achieved in that: the preparation method of Glutin Protein-based Degradable Plastic Film, it is characterized in that: 1) prepared by solution: in there-necked flask, add gelatin, Na2SiF6Being blended with the aqueous solution of glycerol, sorbitol, there-necked flask is placed in 80-90 DEG C of water-bath high speed dispersed with stirring 0.5-1h, regulation pH value, between 5.0-6.0, prepares finely dispersed protein solution；2) preparation of thin film: finely dispersed protein solution is placed in 100 DEG C of baking ovens and uses solution casting method film forming.Described addition gelatin, Na2SiF6With the mass ratio of glycerol, sorbitol it is: 1:1:3:2.With hydrochloric acid and Na2C03Regulation pH value.
The invention have the benefit that the hot strength of thin film presents the trend of raising rapidly, when the mass fraction of plasticizer is more than 20%, the elongation at break of plastic sheeting is big, shows the toughness of excellence.Protein-based plastic sheeting degree of degradation in 20 days is more than 15%, shows that protein-based plastic sheeting has good degradability.
Detailed description of the invention
The preparation method of Glutin Protein-based Degradable Plastic Film, its step is as follows:
1) prepared by solution: add gelatin, Na in there-necked flask2SiF6Being blended with the aqueous solution of glycerol, sorbitol, there-necked flask is placed in 80-90 DEG C of water-bath high speed dispersed with stirring 0.5-1h, regulation pH value, between 5.0-6.0, prepares finely dispersed protein solution.
2) preparation of thin film: finely dispersed protein solution is placed in 100 DEG C of baking ovens and uses solution casting method film forming.Described addition gelatin, Na2SiF6With the mass ratio of glycerol, sorbitol it is: 1:1:3:2.With hydrochloric acid and Na2C03Regulation pH value.
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope of present disclosure; according to technical scheme and inventive concept equivalent or change in addition thereof, all should contain within protection scope of the present invention.
Claims (3)
1. the preparation method of Glutin Protein-based Degradable Plastic Film, is characterized in that:
1) prepared by solution: add gelatin, Na in there-necked flask2SiF6Being blended with the aqueous solution of glycerol, sorbitol, there-necked flask is placed in 80-90 DEG C of water-bath high speed dispersed with stirring 0.5-1h, regulation pH value, between 5.0-6.0, prepares finely dispersed protein solution；
2) preparation of thin film: finely dispersed protein solution is placed in 100 DEG C of baking ovens and uses solution casting method film forming.
The preparation method of Glutin Protein-based Degradable Plastic Film the most according to claim 1, is characterized in that: described addition gelatin, Na2SiF6With the mass ratio of glycerol, sorbitol it is: 1:1:3:2.
The preparation method of Glutin Protein-based Degradable Plastic Film the most according to claim 1, is characterized in that: with hydrochloric acid and Na2C03Regulation pH value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510342397.7A CN106317906A (en) | 2015-06-19 | 2015-06-19 | Production method of gelatin protein-based degradable plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510342397.7A CN106317906A (en) | 2015-06-19 | 2015-06-19 | Production method of gelatin protein-based degradable plastic film |
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| CN106317906A true CN106317906A (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510342397.7A Pending CN106317906A (en) | 2015-06-19 | 2015-06-19 | Production method of gelatin protein-based degradable plastic film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107501931A (en) * | 2017-09-30 | 2017-12-22 | 桐城市中汇塑业有限公司 | A kind of Glutin Protein-based Degradable Plastic Film |
| CN113527895A (en) * | 2021-08-04 | 2021-10-22 | 西湖大学 | Degradable super-tough silk protein-based material and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955670A (en) * | 2010-09-13 | 2011-01-26 | 福州大学 | Gelatin-chitosan composite food packaging film and preparation method thereof |
| CN104194354A (en) * | 2014-09-05 | 2014-12-10 | 山东省海洋生物研究院 | Edible biological preservative film and preparation method thereof |
| CN104479368A (en) * | 2014-12-10 | 2015-04-01 | 国家纳米科学中心 | Nanocellulose enhanced full-biodegradable thin film and preparation method thereof |
-
2015
- 2015-06-19 CN CN201510342397.7A patent/CN106317906A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955670A (en) * | 2010-09-13 | 2011-01-26 | 福州大学 | Gelatin-chitosan composite food packaging film and preparation method thereof |
| CN104194354A (en) * | 2014-09-05 | 2014-12-10 | 山东省海洋生物研究院 | Edible biological preservative film and preparation method thereof |
| CN104479368A (en) * | 2014-12-10 | 2015-04-01 | 国家纳米科学中心 | Nanocellulose enhanced full-biodegradable thin film and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107501931A (en) * | 2017-09-30 | 2017-12-22 | 桐城市中汇塑业有限公司 | A kind of Glutin Protein-based Degradable Plastic Film |
| CN113527895A (en) * | 2021-08-04 | 2021-10-22 | 西湖大学 | Degradable super-tough silk protein-based material and preparation method and application thereof |
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Application publication date: 20170111 |
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| RJ01 | Rejection of invention patent application after publication |