CN107722373A - A kind of biodegradable plastic and preparation method - Google Patents
A kind of biodegradable plastic and preparation method Download PDFInfo
- Publication number
- CN107722373A CN107722373A CN201711084100.7A CN201711084100A CN107722373A CN 107722373 A CN107722373 A CN 107722373A CN 201711084100 A CN201711084100 A CN 201711084100A CN 107722373 A CN107722373 A CN 107722373A
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- China
- Prior art keywords
- weight
- biodegradable plastic
- starch
- biodegradable
- glycerine
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Biological Depolymerization Polymers (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
A kind of biodegradable plastic, comprising：The thermoplastic starch of 15 75% (weight)；The biodegradable polymers of 0 45% (weight)；The glycerine of 5 25% (weight)；The ethylene glycol of 5 15% (weight).Biodegradable plastic production process is blended as raw material using starch, polyhydroxyalkanoate and starch plastic is made in the present invention, due to containing high concentration hydroxyl in raw material, inierpeneirating network structure can be formed, there is good mobility, so plastics of the present invention have good intensity, softness, gloss, gas barrier property, an oil-proof composition, heat sealability is very superior.
Description
Technical field
The present invention relates to a kind of plastics, more particularly, to a kind of biodegradable plastic and preparation method thereof.
Background technology
At present, plastics because of its light weight, intensity is high, stable chemical performance and it is cheap the advantages that and sent out extensively in many fields
Exhibition.But because used plastics are still without appropriate processing method, pollution of the plastic garbage to natural environment is increasingly severe, right
The harm of human survival is also increasingly severe.
The content of the invention
In order to solve the problem of non-degradable plastic pollution environment of tradition, destruction soil texture, of the invention first purpose
It is to provide the biodegradable plastic that a kind of biological degradability is good and application performance is good.
Second object of the present invention is to provide a kind of preparation method of biodegradable plastic.
The technical solution adopted for the present invention to solve the technical problems is：Use the poly- alkyl fatty acid ester that can degrade for
Base stock, organic matter is added, biodegradable plastic is made by special process.The biodegradable plastic can be by several aquatic
Bacterial degradation Cheng Shui, carbon dioxide and organic matter, environment will not be polluted.Specifically the biodegradable plastic is with thermoplastic
Property starch, biodegradable polymers and complementary composition are raw material, are process through spiral squeezing equipment and membrane equipment.
According to one aspect of the present invention, the invention provides a kind of biodegradable plastic, comprising：15-75% (weight)
Thermoplastic starch；
20-45% (weight) biodegradable polymers；
5-25% (weight) glycerine；
5-15% (weight) ethylene glycol.
It is another aspect of this invention to provide that the invention provides a kind of method for preparing biodegradable plastic, this method bag
Include following steps：
(1) polymer, glycerine, ethylene glycol and water biological can be explained and sequentially adds 15-25 points of stirring in high-speed mixer
Clock, it is mixed into uniform miscible body.
(2) thermoplastic starch, glycerine, ethylene glycol and water are sequentially added into stirring 15-25 minutes in high-speed mixer,
It is mixed into uniform miscible body.
(3) the miscible body for being obtained step (1), (2) by measuring pump and weight-loss metering feeder adds twin-screw
In extruder, it is kneaded and is extruded.Specific step is feeding zone of the mixture in double screw extruder, melt blending
Area, blending shear zone, blending kneading disc, plasticizing promote to be conveyed, disperses, converges, heating respectively in area and supercharging extrusion zone
Melting, shearing crushing, extruding kneading, graft-blending, row wave, thicken and are pressurized output.The temperature control of wherein feeding zone exists
100-145 DEG C, the temperature control of shear zone is blended at 135-180 DEG C at 125-180 DEG C in the temperature control in melt blending area, altogether
For the temperature control of mixed kneading disc at 130-180 DEG C, plasticizing promotes the temperature control in area to be pressurized the temperature of extrusion zone at 105-180 DEG C
Degree control is at 115-185 DEG C.The material bar extruded through die portion is water cooled, air-cooled, and biodegradable plastic is made with pelleter
Particle.
The invention has the advantages that the biodegradable plastic production process using starch, polyhydroxyalkanoate as
Starch plastic is made in raw material blending, due to containing high concentration hydroxyl in raw material, can form inierpeneirating network structure, there is good stream
Dynamic property, so plastics of the present invention have good intensity, softness, gloss, gas barrier property, an oil-proof composition, heat sealability is very excellent
More.
Embodiment
In particular it relates to a kind of biodegradable plastic, including：
15-75% (weight) thermoplastic starch；
20-45% (weight) biodegradable polymers；
5-25% (weight) glycerine；
5-15% (weight) ethylene glycol.
According to the present invention, described thermoplastic starch be fineness be more than 100 general industry starch, including cornstarch,
Farina and modified starch.
According to the present invention, described biodegradable polymers are polyhydroxyalkanoate.
The biodegradable plastic of the present invention has following strong point：
(a) it is easily processed into type：With general-purpose plastics process equipment blown film, technique is easily controllable, and preparation method is simple, flexible,
Machine-shaping property is good.
(b) degradation property is good：Because thermoplastic starch powder content is high and other degradable additives ratios are big, biology drop
The performance of solution is very superior.
According to another aspect of the invention, it relates to a kind of method for preparing biodegradable plastic, this method include
Following steps：
(1) biodegradable polymers, glycerine, ethylene glycol and water are sequentially added and 10-25 points is stirred in high-speed mixer
Clock, it is mixed into uniform miscible body.
(2) thermoplastic starch, glycerine, ethylene glycol and water are sequentially added into stirring 10-25 minutes in high-speed mixer,
It is mixed into uniform miscible body.
(3) the miscible body for being obtained step (1), (2) by measuring pump and weight-loss metering feeder adds twin-screw
In extruder, it is kneaded and is extruded.Specific step is feeding zone of the mixture in double screw extruder, melt blending
Area, blending shear zone, blending kneading disc, plasticizing promote to be conveyed, disperses, converges, heating respectively in area and supercharging extrusion zone
Melting, shearing crushing, extruding kneading, graft-blending, row wave, thicken and are pressurized output.The temperature control of wherein feeding zone exists
90-145 DEG C, the temperature control of shear zone is blended at 135-180 DEG C at 125-180 DEG C in the temperature control in melt blending area, blending
For the temperature control of kneading disc at 130-180 DEG C, plasticizing promotes the temperature control in area to be pressurized the temperature of extrusion zone at 105-180 DEG C
Control is at 115-185 DEG C.The material bar extruded through die portion is water cooled, air-cooled, and biodegradable plastic grain is made with pelleter
Son.
According to the inventive method, described thermoplastic starch is more than 100 general industry starch for fineness, including corn forms sediment
Powder, farina, and modified starch.
According to the inventive method, described biodegradable polymers are polyhydroxyalkanoate.
Claims (5)
- A kind of 1. biodegradable plastic, it is characterised in that：15-75% (weight) thermoplastic starch；20-45% (weight) biodegradable polymers；5-25% (weight) glycerine；5-15% (weight) ethylene glycol.
- 2. the biodegradable plastic as described in claim 1, wherein described thermoplastic starch is that fineness is common more than 100 Industrial starch, including cornstarch, farina and modified starch.
- 3. the biodegradable plastic as described in claim 1, wherein described biodegradable polymers are poly-hydroxy fatty acid Ester.
- 4. a kind of preparation method of biodegradable plastic, comprises the following steps：(1) can biology explanation polymer, glycerine, Ethylene glycol and water sequentially add stirring 10-25 minutes in high-speed mixer, are mixed into uniform miscible body；(2) thermoplastic starch, glycerine, ethylene glycol and water are sequentially added into stirring 10-25 minutes in high-speed mixer, mixed The uniform miscible body of synthesis；(3) the miscible body for being obtained step (1), (2) by measuring pump and weight-loss metering feeder adds twin-screw extrusion In machine, it is kneaded and is extruded；The material bar extruded through die portion is water cooled, air-cooled, and biodegradable plastic particle is made with pelleter.
- 5. method as claimed in claim 4, wherein described biodegradable polymers are polyhydroxyalkanoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084100.7A CN107722373A (en) | 2017-11-07 | 2017-11-07 | A kind of biodegradable plastic and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711084100.7A CN107722373A (en) | 2017-11-07 | 2017-11-07 | A kind of biodegradable plastic and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107722373A true CN107722373A (en) | 2018-02-23 |
Family
ID=61222812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711084100.7A Withdrawn CN107722373A (en) | 2017-11-07 | 2017-11-07 | A kind of biodegradable plastic and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107722373A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109651786B (en) * | 2019-01-02 | 2021-04-30 | 南京工业大学 | Full-biodegradable oil anti-seepage film and preparation method thereof |
| CN113637235A (en) * | 2021-07-02 | 2021-11-12 | 上海经海纬象生物材料有限公司 | Full-biodegradable starch material and preparation method thereof |
-
2017
- 2017-11-07 CN CN201711084100.7A patent/CN107722373A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109651786B (en) * | 2019-01-02 | 2021-04-30 | 南京工业大学 | Full-biodegradable oil anti-seepage film and preparation method thereof |
| CN113637235A (en) * | 2021-07-02 | 2021-11-12 | 上海经海纬象生物材料有限公司 | Full-biodegradable starch material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |
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| WW01 | Invention patent application withdrawn after publication |