CN103146033A - Method for producing biodegradable plastic - Google Patents
Method for producing biodegradable plastic Download PDFInfo
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- CN103146033A CN103146033A CN2013100736491A CN201310073649A CN103146033A CN 103146033 A CN103146033 A CN 103146033A CN 2013100736491 A CN2013100736491 A CN 2013100736491A CN 201310073649 A CN201310073649 A CN 201310073649A CN 103146033 A CN103146033 A CN 103146033A
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- biodegradable plastic
- degradable plastics
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Abstract
The invention discloses a method for producing biodegradable plastic. The method comprises the following steps of: dripping potassium periodate dissolved in water into rice starch, stirring to react at 40-50 DEG C for 8-10 hours, and after the reaction is completed, filtering, drying and crushing to obtain solid particles; and mixing the solid particles and glycerol in a high speed mixer, plasticizing and extruding through a single-screw extruder, pelletizing and processing again to obtain the biodegradable plastic. By utilizing the mode, the method for producing the biodegradable plastic disclosed by the invention has the advantages that the internal part of the rice starch can react through introducing potassium periodate in a preparation process, so that the hydrophobicity of the rice starch is increased, and the produced plastic product has good mechanical property; and moreover, the biodegradation velocity is not influenced, and the biodegradable plastic can be widely applied.
Description
Technical field
The present invention relates to field of plastics processing, particularly relate to a kind of preparation method of bio-degradable plastics.
Background technology
Plastics are compared with traditional metal products, have lightweight, corrosion-resistant, moulding is easy, processing elegant in appearance, easy, low cost and other advantages, generally be applied in our life, be indispensable simultaneously.But along with increasing rapidly of plastics output, waste plastic can not in time be processed, thereby causes the pollution of environment more and more serious.The plastic garbage appropriation of land blocks rivers, hinders health, affect view, the growth that harms the crops and HUMAN HEALTH, plastic garbage have become the important factor of polluting human habitat, and therefore the biodegradable plastics goods are used more and more on a large scale now.But traditional biodegradable plastics goods do not have good mechanical property in use, have the plastic degradation ability of fine mechanical property not reach requirement, therefore can not be widely used.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of preparation method of bio-degradable plastics, and the plastics that the method makes have good mechanical property.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of preparation method of bio-degradable plastics is provided, comprises that step is:
(1) water-soluble potassium periodate is added drop-wise in Starch rice and stirring, reacted 8-10 hour under 40-50 ℃, filtration after the reaction end, drying and pulverizing obtain solid particulate;
(2) described solid particulate and glycerine are mixed in high-speed mixer, then plastify by single screw extrusion machine and extrude, granulation also obtains bio-degradable plastics by secondary processing.
In a preferred embodiment of the present invention, described in step (1), water is distilled water or deionized water.
In a preferred embodiment of the present invention, rate of addition described in step (1) be every 3 seconds 1.
In a preferred embodiment of the present invention, the size of described solid particulate is the 150-200 micron.
The invention has the beneficial effects as follows: the preparation method of bio-degradable plastics of the present invention, the introducing of preparation process meso-periodic acid sodium can make the inside of Starch rice be reacted, increase the hydrophobicity of Starch rice, make the plastic prod that makes have good mechanical property, on not impact of biodegradation rate, bio-degradable plastics is widely used simultaneously.
Embodiment
The below is described in detail preferred embodiment of the present invention, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made more explicit defining.
Embodiment one:
The potassium periodate that (1) will be dissolved in distilled water or deionized water is added drop-wise in Starch rice and stirs, described rate of addition be every 3 seconds 1, reaction is 10 hours under 40 ℃, filters after reaction finishes, dry and pulverize that to obtain size be the solid particulate of 160 microns;
(2) described solid particulate and glycerine are mixed in high-speed mixer, then plastify by single screw extrusion machine and extrude, granulation also obtains bio-degradable plastics by secondary processing.
Embodiment two:
The potassium periodate that (1) will be dissolved in distilled water or deionized water is added drop-wise in Starch rice and stirs, described rate of addition be every 3 seconds 1, reaction is 9 hours under 50 ℃, filters after reaction finishes, dry and pulverize that to obtain size be the solid particulate of 180 microns;
(2) described solid particulate and glycerine are mixed in high-speed mixer, then plastify by single screw extrusion machine and extrude, granulation also obtains bio-degradable plastics by secondary processing.
Embodiment three:
The potassium periodate that (1) will be dissolved in distilled water or deionized water is added drop-wise in Starch rice and stirs, described rate of addition be every 3 seconds 1, reaction is 8 hours under 45 ℃, filters after reaction finishes, dry and pulverize that to obtain size be the solid particulate of 200 microns;
(2) described solid particulate and glycerine are mixed in high-speed mixer, then plastify by single screw extrusion machine and extrude, granulation also obtains bio-degradable plastics by secondary processing.
The above is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification sheets of the present invention to do, or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (4)
1. the preparation method of a bio-degradable plastics, is characterized in that, comprises that step is:
(1) water-soluble potassium periodate is added drop-wise in Starch rice and stirring, reacted 8-10 hour under 40-50 ℃, filtration after the reaction end, drying and pulverizing obtain solid particulate;
(2) described solid particulate and glycerine are mixed in high-speed mixer, then plastify by single screw extrusion machine and extrude, granulation also obtains bio-degradable plastics by secondary processing.
2. the preparation method of bio-degradable plastics according to claim 1, is characterized in that, described in step (1), water is distilled water or deionized water.
3. the preparation method of bio-degradable plastics according to claim 1, is characterized in that, rate of addition described in step (1) be every 3 seconds 1.
4. the preparation method of bio-degradable plastics according to claim 1, is characterized in that, the size of described solid particulate is the 150-200 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100736491A CN103146033A (en) | 2013-03-08 | 2013-03-08 | Method for producing biodegradable plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100736491A CN103146033A (en) | 2013-03-08 | 2013-03-08 | Method for producing biodegradable plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103146033A true CN103146033A (en) | 2013-06-12 |
Family
ID=48544381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100736491A Pending CN103146033A (en) | 2013-03-08 | 2013-03-08 | Method for producing biodegradable plastic |
Country Status (1)
| Country | Link |
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| CN (1) | CN103146033A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2988455A (en) * | 1958-03-06 | 1961-06-13 | American Mach & Foundry | Polysaccharide composition and method of manufacture |
| CN1546563A (en) * | 2003-12-05 | 2004-11-17 | 成都新柯力化工科技有限公司 | Total-starch type biodegradable plastic |
| CN101914223A (en) * | 2010-08-06 | 2010-12-15 | 西北师范大学 | Preparation method of modified starch-polyvinyl alcohol-based composite plastic film |
| CN102504344A (en) * | 2011-11-09 | 2012-06-20 | 青岛科技大学 | Recyclable high-strength biological packaging material |
-
2013
- 2013-03-08 CN CN2013100736491A patent/CN103146033A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2988455A (en) * | 1958-03-06 | 1961-06-13 | American Mach & Foundry | Polysaccharide composition and method of manufacture |
| CN1546563A (en) * | 2003-12-05 | 2004-11-17 | 成都新柯力化工科技有限公司 | Total-starch type biodegradable plastic |
| CN101914223A (en) * | 2010-08-06 | 2010-12-15 | 西北师范大学 | Preparation method of modified starch-polyvinyl alcohol-based composite plastic film |
| CN102504344A (en) * | 2011-11-09 | 2012-06-20 | 青岛科技大学 | Recyclable high-strength biological packaging material |
Non-Patent Citations (1)
| Title |
|---|
| 张水洞等: "用于制备热塑性塑料的双醛玉米淀粉的研究", 《四川大学学报（自然科学版）》, vol. 44, no. 3, 28 June 2007 (2007-06-28) * |
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Application publication date: 20130612 |