CN106317470A - Method for preparing high-strength starch-based completely biodegraded plastic film by solution blending method - Google Patents
Method for preparing high-strength starch-based completely biodegraded plastic film by solution blending method Download PDFInfo
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- CN106317470A CN106317470A CN201510341969.XA CN201510341969A CN106317470A CN 106317470 A CN106317470 A CN 106317470A CN 201510341969 A CN201510341969 A CN 201510341969A CN 106317470 A CN106317470 A CN 106317470A
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- starch
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Abstract
The invention discloses a method for preparing a high-strength starch-based completely biodegraded plastic film by a solution blending method. The method comprises the following steps: putting 50% of starch, a certain amount of glycerin and a few of distilled water in a three-mouth flask, gelatinizing the materials at the temperature of 60-80 DEG C for 15-30 min, adding a prepared PVA aqueous solution and blending the materials for 30 min, adding a solution with glyoxal concentration of 30% and reacting the materials for 75-90 min, and performing tape casting to form the film. The glyoxal is substituted by adipaldehyde. The film has the beneficial effects that PVA completely biodegraded plastic film in the starch by a one-step solution blending method has good mechanical property, tensile strength can reach 32.12 MPa, the elongation at break can reach 290.15%, and a PVA system in the starch has good compatibility.
Description
Technical field
The present invention relates to field of material technology, specifically a kind of solution blended process prepares high strength starch-based full biodegradation plastic film.
Background technology
In recent years, the harm that ecological environment is caused by solution plastic refuse receives much attention, and exploitation biodegradable plastic is more and more paid attention to as the effective way administering " white pollution ".In the exploitation of biodegradable plastic, starch has critical role and broad prospect of application.Starch is a kind of renewable natural polymer, has abundance and cheap feature.PVA be a kind of biodegradable synthetic high polymer, in terms of yield, China is again first big country of PVA, and research and development starch base, complete biodegradable plastics are the most necessary.
Summary of the invention
It is an object of the invention to provide a kind of solution blended process and prepare high strength starch-based full biodegradation plastic film.
The technical scheme is that and be achieved in that: solution blended process prepares high strength starch-based full biodegradation plastic film, 50% starch, a certain amount of glycerol and a small amount of distilled water are placed in there-necked flask, gelatinizing 15-30 minute at 60-80 DEG C, add the PVA aqueous solution that people is pre-configured with and 30min is blended, add people's Biformyl 30% solution reaction after 75-90 minute, casting film-forming.
In described PVA aqueous solution starch and and PVA mass ratio be 3:1.
The quality of the glycerol of described addition is the 5-10% of starch quality.
Described Biformyl hexandial replaces.
The invention have the benefit that in starch prepared by a step solution blended process, PVA fully-biodegradable film has preferable mechanical property, hot strength reaches 32.12MPa, and elongation at break reaches 290.15%.In this starch, PVA system has the preferable compatibility.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further explained explanation.
Solution blended process prepares high strength starch-based full biodegradation plastic film, 50% starch, a certain amount of glycerol and a small amount of distilled water are placed in there-necked flask, gelatinizing 15-30 minute at 60-80 DEG C, add the PVA aqueous solution that people is pre-configured with and 30min is blended, add people's Biformyl 30% solution reaction after 75-90 minute, casting film-forming.In described PVA aqueous solution starch and and PVA mass ratio be 3:1.The quality of the glycerol of described addition is the 5-10% of starch quality.
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 (4)
1. solution blended process prepares high strength starch-based full biodegradation plastic film, it is characterized in that, 50% starch, a certain amount of glycerol and a small amount of distilled water are placed in there-necked flask, gelatinizing 15-30 minute at 60-80 DEG C, add the PVA aqueous solution that people is pre-configured with and 30min is blended, add people's Biformyl 30% solution reaction after 75-90 minute, casting film-forming.
Solution blended process the most according to claim 1 prepares high strength starch-based full biodegradation plastic film, it is characterised in that in PVA aqueous solution starch and and PVA mass ratio be 3:1.
Solution blended process the most according to claim 1 prepares high strength starch-based full biodegradation plastic film, it is characterised in that the quality of the glycerol of addition is the 5-10% of starch quality.
Solution blended process the most according to claim 1 prepares high strength starch-based full biodegradation plastic film, it is characterised in that Biformyl hexandial replaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341969.XA CN106317470A (en) | 2015-06-19 | 2015-06-19 | Method for preparing high-strength starch-based completely biodegraded plastic film by solution blending method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510341969.XA CN106317470A (en) | 2015-06-19 | 2015-06-19 | Method for preparing high-strength starch-based completely biodegraded plastic film by solution blending method |
Publications (1)
| Publication Number | Publication Date |
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| CN106317470A true CN106317470A (en) | 2017-01-11 |
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| CN201510341969.XA Pending CN106317470A (en) | 2015-06-19 | 2015-06-19 | Method for preparing high-strength starch-based completely biodegraded plastic film by solution blending method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521506A (en) * | 2022-09-30 | 2022-12-27 | 武汉工程大学 | Calcium lignosulfonate modified thermoplastic starch material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143936A (en) * | 2007-09-05 | 2008-03-19 | 哈尔滨工业大学 | Preparation method for completely biodegraded high amylose starches base thin film |
| CN102504349A (en) * | 2011-10-18 | 2012-06-20 | 河南工业大学 | Phosphate starch biodegradable film and preparation method thereof |
| CN104479154A (en) * | 2014-12-16 | 2015-04-01 | 天津市凯旋塑料制品有限公司 | Preparation method of completely biodegraded thin film |
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2015
- 2015-06-19 CN CN201510341969.XA patent/CN106317470A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143936A (en) * | 2007-09-05 | 2008-03-19 | 哈尔滨工业大学 | Preparation method for completely biodegraded high amylose starches base thin film |
| CN102504349A (en) * | 2011-10-18 | 2012-06-20 | 河南工业大学 | Phosphate starch biodegradable film and preparation method thereof |
| CN104479154A (en) * | 2014-12-16 | 2015-04-01 | 天津市凯旋塑料制品有限公司 | Preparation method of completely biodegraded thin film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115521506A (en) * | 2022-09-30 | 2022-12-27 | 武汉工程大学 | Calcium lignosulfonate modified thermoplastic starch material and preparation method thereof |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |