CN113136054A - Starch/polylactic acid composite material and preparation method and application thereof - Google Patents
Starch/polylactic acid composite material and preparation method and application thereof Download PDFInfo
- Publication number
- CN113136054A CN113136054A CN202110320480.XA CN202110320480A CN113136054A CN 113136054 A CN113136054 A CN 113136054A CN 202110320480 A CN202110320480 A CN 202110320480A CN 113136054 A CN113136054 A CN 113136054A
- Authority
- CN
- China
- Prior art keywords
- composite material
- parts
- starch
- polylactic acid
- plasticizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 59
- 239000002131 composite material Substances 0.000 title claims abstract description 55
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 55
- 229920002472 Starch Polymers 0.000 title claims abstract description 53
- 239000008107 starch Substances 0.000 title claims abstract description 53
- 235000019698 starch Nutrition 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000012802 nanoclay Substances 0.000 claims abstract description 20
- 239000004014 plasticizer Substances 0.000 claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 claims abstract description 17
- 239000003999 initiator Substances 0.000 claims abstract description 17
- -1 polyethylene Polymers 0.000 claims abstract description 17
- 229920000573 polyethylene Polymers 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 17
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims abstract description 13
- 229920006238 degradable plastic Polymers 0.000 claims abstract description 5
- 239000005022 packaging material Substances 0.000 claims abstract description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 32
- 240000003183 Manihot esculenta Species 0.000 claims description 12
- 235000011187 glycerol Nutrition 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical group CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- OXYZDRAJMHGSMW-UHFFFAOYSA-N 3-chloropropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCCl OXYZDRAJMHGSMW-UHFFFAOYSA-N 0.000 claims description 2
- KKHUSADXXDNRPW-UHFFFAOYSA-N malonic anhydride Chemical compound O=C1CC(=O)O1 KKHUSADXXDNRPW-UHFFFAOYSA-N 0.000 claims description 2
- 229920001592 potato starch Polymers 0.000 claims description 2
- 235000012424 soybean oil Nutrition 0.000 claims description 2
- 239000003549 soybean oil Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 241000658379 Manihot esculenta subsp. esculenta Species 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OCKGFTQIICXDQW-ZEQRLZLVSA-N 5-[(1r)-1-hydroxy-2-[4-[(2r)-2-hydroxy-2-(4-methyl-1-oxo-3h-2-benzofuran-5-yl)ethyl]piperazin-1-yl]ethyl]-4-methyl-3h-2-benzofuran-1-one Chemical compound C1=C2C(=O)OCC2=C(C)C([C@@H](O)CN2CCN(CC2)C[C@H](O)C2=CC=C3C(=O)OCC3=C2C)=C1 OCKGFTQIICXDQW-ZEQRLZLVSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
-
- 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
- C08K2201/011—Nanostructured additives
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention provides a starch/polylactic acid composite material and a preparation method and application thereof. The composite material is prepared from the following components: 40-60 parts of cassava starch, 10-20 parts of polylactic acid, 20-25 parts of plasticizer, 1-10 parts of nano clay, 0.3-1 part of compatibilizer, 0.2-0.4 part of AC-316A polyethylene wax powder and 0.02-0.05 part of initiator. According to the starch/polylactic acid composite material, the nano clay and a small amount of polylactic acid are added, so that the sensitivity of the material to humidity is greatly reduced, the mechanical property of the composite material is remarkably improved, the AC-316A polyethylene wax powder is added as a release agent, the die sticking condition of the material in the preparation process is improved, the surface of the obtained composite material is smooth, and the biodegradability is maintained; in addition, the starch/polylactic acid composite material has simple preparation process, low PLA content and low cost, and has better application value in the field of degradable plastics or packaging materials.
Description
Technical Field
The invention belongs to the field of preparation of high polymer materials, and particularly relates to a starch/polylactic acid composite material as well as a preparation method and application thereof.
Background
While petroleum-based plastics bring great convenience to our lives, their environment is seriously affected due to their difficult degradability. With the continuous push of the country to limit and forbid the plastic token in recent years, the development of biodegradable plastic has become a hot society.
Starch as a natural polymer material has huge yield and low price, and can be biodegraded with huge potential for developing petroleum-based plastic substitutes. However, starch molecules contain a large amount of hydroxyl groups inside, the hydrophilicity is strong, the mechanical property of the obtained material is poor, the material is sensitive to external humidity, and the production and the application of the starch-based material are limited. Polylactic acid, as a chemically synthesized material, is biodegradable and similar to petroleum-based plastics in many properties, and is widely used in the medical field. The more complex manufacturing process and expensive price also limit its further applications.
Patent CN201010127838.9 provides a preparation method of a fully degradable enhanced polylactic acid/starch blend, which greatly improves the compatibility of polylactic acid and starch, simultaneously enhances the mechanical property and thermal property of the polylactic acid/starch blend, and maintains the biodegradability, but the polylactic acid has the defects of large dosage, high cost and cavity adhesion phenomenon during double-screw blending, thereby causing the loss of raw materials. Therefore, it is highly desirable to provide a polylactic acid/starch composite material which has excellent mechanical properties and low cost and can effectively avoid the mold sticking phenomenon in the preparation process.
Disclosure of Invention
The invention aims to provide a starch/polylactic acid composite material and a preparation method and application thereof.
The primary object of the present invention is to provide a starch/polylactic acid composite material.
The invention also aims to provide a preparation method of the starch/polylactic acid composite material.
The invention also aims to provide the application of the composite material in preparing degradable plastics or packaging materials.
The above purpose of the invention is realized by the following technical scheme:
the invention provides a starch/polylactic acid composite material, which comprises the following components in parts by weight: 40-60 parts of cassava starch, 10-20 parts of polylactic acid, 20-25 parts of plasticizer, 1-10 parts of nano clay, 0.3-1 part of compatibilizer, 0.2-0.4 part of AC-316A polyethylene wax powder and 0.02-0.05 part of initiator.
According to the starch/polylactic acid composite material, the nano-clay and the polylactic acid are added, so that the sensitivity of the material to humidity is greatly reduced, the mechanical property of the composite material is effectively improved, and the die bonding condition of the material in the preparation process is improved by adding the AC-316A polyethylene wax powder as a release agent.
Preferably, 50 parts of cassava starch, 15 parts of polylactic acid, 23.5 parts of plasticizer, 5 parts of nano clay, 0.5 part of compatibilizer, 0.4 part of AC-316A polyethylene wax powder and 0.05 part of initiator.
Preferably, the plasticizer is glycerol or/and sucrose.
Preferably, the compatibilizer is maleic anhydride, malonic anhydride, epoxidized soybean oil, or chloropropyltrimethoxysilane.
The initiator is 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane or dicumyl peroxide.
The invention also provides a preparation method of the composite material, which comprises the following steps:
s1, mixing potato starch, polylactic acid, a plasticizer, nano clay, a compatibilizer, AC-316A polyethylene wax powder and an initiator, and adding the mixture into a high-speed mixer for uniform mixing to obtain a mixed material;
and S2, adding the mixed material into a torque rheometer or an internal mixer for plasticizing to obtain the starch/polylactic acid composite material.
Preferably, when the plasticizer is glycerin, step S1 is performed by stirring thoroughly until the glycerin is completely absorbed before being added into the high-speed mixer.
Preferably, the plasticizing condition of the torque rheometer in step S2 is: the temperature is 179-185 ℃, and the time is 4-5 min.
Preferably, the plasticizing conditions of the internal mixer in the step S2 are as follows: the temperature is 179-185 ℃, the time is 4-5 min, and the rotating speed is 40-50 r/min.
In addition, the application of the composite material in preparing degradable plastics or packaging materials is also within the protection scope of the invention.
Compared with the prior art, the invention has the beneficial effects that:
according to the starch/polylactic acid composite material provided by the invention, through adding the nano clay and mixing a small amount of polylactic acid, the sensitivity of the material to humidity is greatly reduced, the mechanical property of the composite material is obviously improved, through adding the AC-316A polyethylene wax powder as a release agent, the die sticking condition of the material in the preparation process is improved, the surface of the obtained composite material is smooth, and the biodegradability is kept; in addition, the starch/polylactic acid composite material has simple preparation process, low PLA content and low cost, and has better application value in the field of degradable plastics or packaging materials.
Detailed Description
The present invention will be further described with reference to specific embodiments, but the present invention is not limited to the examples in any way. The starting reagents employed in the examples of the present invention are, unless otherwise specified, those that are conventionally purchased.
Example 1A starch/PLA composite
1. Raw materials
The starch/PLA composite material of the embodiment contains the following components in parts by weight:
50 parts of cassava starch, 15 parts of polylactic acid (PLA), 23.5 parts of glycerol as a plasticizer, 5 parts of nano clay, 0.5 part of maleic anhydride as a compatibilizer, 0.4 part of AC-316A polyethylene wax powder and 0.05 part of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane as an initiator.
2. Preparation method
(1) The preparation method comprises the steps of weighing cassava starch, PLA, a plasticizer, nano clay, a compatibilizer, a release agent and an initiator according to parts by weight, fully stirring until glycerol is completely absorbed, and putting into a high-speed mixer for uniformly mixing to obtain a mixed material.
(2) And putting the mixed material into a torque rheometer, and plasticizing for 4 minutes at 179 ℃ to obtain the starch/PLA composite material.
The starch/PLA composite material prepared according to the method of the embodiment has smooth surface, is easy to peel off from a screw rod in the preparation process, and has no die sticking.
Example 2A starch/PLA composite
1. Raw materials
The starch/PLA composite material of the embodiment contains the following components in parts by weight:
40 parts of cassava starch, 10 parts of polylactic acid (PLA), 20 parts of sucrose as a plasticizer, 5 parts of nano clay, 0.3 part of maleic anhydride as a compatibilizer, 0.2 part of AC-316A polyethylene wax powder and 0.02 part of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane as an initiator.
2. Preparation method
(1) The cassava starch, the PLA, the plasticizer, the nano clay, the compatibilizer, the release agent and the initiator are weighed according to parts by weight and put into a high-speed mixer to be uniformly mixed, so that a mixed material is obtained.
(2) And putting the mixed material into a torque rheometer, and plasticizing for 4 minutes at 179 ℃ to obtain the starch/PLA composite material.
The starch/PLA composite material prepared according to the method of the embodiment has smooth surface, is easy to peel off from a screw rod in the preparation process, and has no die sticking.
Example 3A starch/PLA composite
1. Raw materials
The starch/PLA composite material of the embodiment contains the following components in parts by weight:
60 parts of cassava starch, 20 parts of polylactic acid (PLA), 25 parts of glycerol serving as a plasticizer, 10 parts of nano clay, 1 part of maleic anhydride serving as a compatibilizer, 0.4 part of AC-316A polyethylene wax powder and 0.05 part of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane serving as an initiator.
2. Preparation method
(1) The preparation method comprises the steps of weighing cassava starch, PLA, a plasticizer, nano clay, a compatibilizer, a release agent and an initiator according to parts by weight, fully stirring until glycerol is completely absorbed, and putting into a high-speed mixer for uniformly mixing to obtain a mixed material.
(2) And putting the mixed material into a torque rheometer, and plasticizing for 5 minutes at 185 ℃ to obtain the starch/PLA composite material.
The starch/PLA composite material prepared according to the method of the embodiment has smooth surface, is easy to peel off from a screw rod in the preparation process, and has no die sticking.
Example 4A starch/PLA composite
1. Raw materials
The starch/PLA composite material of the embodiment contains the following components in parts by weight:
50 parts of cassava starch, 15 parts of polylactic acid (PLA), 23.5 parts of glycerol as a plasticizer, 1 part of nano clay, 0.5 part of maleic anhydride as a compatibilizer, 0.2 part of AC-316A polyethylene wax powder and 0.05 part of 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane as an initiator.
2. Preparation method
(1) The preparation method comprises the steps of weighing cassava starch, PLA, a plasticizer, nano clay, a compatibilizer, a release agent and an initiator according to parts by weight, fully stirring until glycerol is completely absorbed, and putting into a high-speed mixer for uniformly mixing to obtain a mixed material.
(2) And putting the mixed material into a torque rheometer, and plasticizing for 5 minutes at 185 ℃ to obtain the starch/PLA composite material.
The starch/PLA composite material prepared according to the method of the embodiment has smooth surface, is easy to peel off from a screw rod in the preparation process, and has no die sticking.
Comparative example 1
Compared with the example 1, the difference is that the AC-316A polyethylene wax powder is not added.
During the preparation process, the prepared starch/PLA composite finished product is difficult to completely peel off from the screw, and the surface is not smooth after being peeled off from the screw.
Comparative example 2
The difference compared to example 1 is that no nanoclay is added.
Comparative example 3
The difference compared with example 1 is that maleic anhydride is not added
Examples of the experiments
The composite materials prepared in examples 1 to 4 and comparative examples 1 to 3 were subjected to mechanical properties and water absorption tests.
1. Test method
The bending property is tested according to GB/T9341-2008;
tensile properties were tested according to GB/T1040-1992;
the water absorption was tested according to GB/T1034-2008.
2. Test results
TABLE 1
| Tensile strength/MPa | Flexural Strength/MPa | Water absorption wt% | |
| Example 1 | 23.3 | 36.9 | 3.8 |
| Example 2 | 20.8 | 34.4 | 4.0 |
| Example 3 | 24.5 | 38.0 | 3.5 |
| Example 4 | 23.1 | 36.6 | 3.9 |
| Comparative example 1 | 23.0 | 35.9 | 3.9 |
| Comparative example 2 | 23.2 | 36.7 | 4.6 |
| Comparative example 3 | 19.4 | 31.5 | 5.8 |
As can be seen from Table 1, the composite materials prepared in examples 1-4 of the present invention have excellent mechanical properties, while comparative example 1, in which AC-316A polyethylene wax powder is not added, has a severe mold sticking phenomenon in the preparation process, which indicates that the mold sticking condition of the material in the preparation process can be effectively improved by adding AC-316A polyethylene wax powder; compared with the comparative example 2, the nano clay is not added, the water absorption of the obtained composite material is obviously increased, and the sensitivity to humidity is reduced; comparative example 3 is that maleic anhydride was not added, the water absorption of the composite was significantly increased, and the mechanical properties were reduced.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The starch/polylactic acid composite material is characterized by comprising the following components in parts by weight: 40-60 parts of cassava starch, 10-20 parts of polylactic acid, 20-25 parts of plasticizer, 1-10 parts of nano clay, 0.3-1 part of compatibilizer, 0.2-0.4 part of AC-316A polyethylene wax powder and 0.02-0.05 part of initiator.
2. The composite material of claim 1, wherein the composite material comprises 50 parts of tapioca starch, 15 parts of polylactic acid, 23.5 parts of plasticizer, 5 parts of nano clay, 0.5 part of compatibilizer, 0.4 part of AC-316A polyethylene wax powder and 0.05 part of initiator.
3. Composite material according to claim 1 or 2, characterized in that the plasticizer is glycerol or/and sucrose.
4. Composite according to claim 1 or 2, characterized in that the compatibilizer is maleic anhydride, malonic anhydride, epoxidized soybean oil or chloropropyltrimethoxysilane.
5. Composite according to claim 1 or 2, characterized in that said initiator is 2, 5-dimethyl-2, 5-bis (tert-butylperoxy) hexane or dicumyl peroxide.
6. A method for preparing the composite material according to any one of claims 1 to 5, characterized by comprising the steps of:
s1, mixing potato starch, polylactic acid, a plasticizer, nano clay, a compatibilizer, AC-316A polyethylene wax powder and an initiator, and adding the mixture into a high-speed mixer for uniform mixing to obtain a mixed material;
and S2, adding the mixed material into a torque rheometer or an internal mixer for plasticizing to obtain the starch/polylactic acid composite material.
7. The method of claim 6, wherein when the plasticizer is glycerin, step S1 is performed by stirring thoroughly until the glycerin is completely absorbed before feeding into the high speed mixer.
8. The method of claim 6, wherein the plasticizing condition of the torque rheometer in step S2 is: the temperature is 179-185 ℃, and the time is 4-5 min.
9. The method of claim 6, wherein the plasticizing conditions of the internal mixer in step S2 are as follows: the temperature is 179-185 ℃, the time is 4-5 min, and the rotating speed is 40-50 r/min.
10. Use of the composite material according to any one of claims 1 to 5 or the composite material prepared by the method according to any one of claims 6 to 9 for the preparation of degradable plastics or packaging materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110320480.XA CN113136054A (en) | 2021-03-25 | 2021-03-25 | Starch/polylactic acid composite material and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110320480.XA CN113136054A (en) | 2021-03-25 | 2021-03-25 | Starch/polylactic acid composite material and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113136054A true CN113136054A (en) | 2021-07-20 |
Family
ID=76810707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110320480.XA Pending CN113136054A (en) | 2021-03-25 | 2021-03-25 | Starch/polylactic acid composite material and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113136054A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268144A (en) * | 2011-06-14 | 2011-12-07 | 武汉华丽环保科技有限公司 | Biodegradable polylactic acid-starch thermal-resistance composite material and preparation method thereof |
| CN103965516A (en) * | 2013-02-01 | 2014-08-06 | 上海杰事杰新材料(集团)股份有限公司 | Fully biodegradable masterbatch and preparation method thereof |
| CN105602011A (en) * | 2015-11-09 | 2016-05-25 | 山东寿光巨能金玉米开发有限公司 | High-compatibility starch-based full-biodegradable resin, and preparation method thereof |
| CN108587129A (en) * | 2018-04-16 | 2018-09-28 | 合肥浦尔菲电线科技有限公司 | A kind of degradable environment-friendly material and preparation method thereof |
-
2021
- 2021-03-25 CN CN202110320480.XA patent/CN113136054A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268144A (en) * | 2011-06-14 | 2011-12-07 | 武汉华丽环保科技有限公司 | Biodegradable polylactic acid-starch thermal-resistance composite material and preparation method thereof |
| CN103965516A (en) * | 2013-02-01 | 2014-08-06 | 上海杰事杰新材料(集团)股份有限公司 | Fully biodegradable masterbatch and preparation method thereof |
| CN105602011A (en) * | 2015-11-09 | 2016-05-25 | 山东寿光巨能金玉米开发有限公司 | High-compatibility starch-based full-biodegradable resin, and preparation method thereof |
| CN108587129A (en) * | 2018-04-16 | 2018-09-28 | 合肥浦尔菲电线科技有限公司 | A kind of degradable environment-friendly material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 徐竹主编: "《复合材料成型工艺及应用》", 31 March 2017, 国防工业出版社 * |
| 林师沛编著: "《聚氯乙烯塑料配方设计指南》", 31 July 2002, 化学工业出版社 * |
| 郑美琴主编: "《包装材料质量检测与评价》", 31 August 2013, 中国轻工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103122079B (en) | Starch-based composite blown film and preparation process of same | |
| CN112980158A (en) | Bamboo-based fiber reinforced full-biodegradable composite material | |
| CA2276329C (en) | Hydroxyalkylated starch ester and preparation and use thereof | |
| TWI581873B (en) | Thermoplastic starch composition derives from agricultural waste | |
| CN110294923B (en) | Micro-foaming full-biodegradable polymer sheet and preparation method thereof | |
| CN1935882B (en) | Water-soluble biodegradable material, and its preparing method and sheet-like shaped product | |
| CN105602011A (en) | High-compatibility starch-based full-biodegradable resin, and preparation method thereof | |
| CN112029154A (en) | Biodegradable material and preparation method thereof | |
| CN110818954A (en) | Hydrophobic thermoplastic starch composite material and manufacturing method thereof | |
| CN112940467A (en) | Preparation method of bamboo-based fiber reinforced full-biodegradable composite material | |
| CN1939966A (en) | Hydrophobic degradable biological material, its production and film products | |
| CN111808333A (en) | High-tensile-strength composite polysaccharide edible film and preparation method thereof | |
| CN111269513A (en) | Application of plant powder, polyvinyl alcohol film plasticizer, polyvinyl alcohol composition, polyvinyl alcohol film master batch and film | |
| CN110922730A (en) | Modified polylactic acid and preparation method thereof | |
| FI104091B (en) | Melt-machinable starch composition, process for its preparation and use of the composition | |
| WO2023237996A1 (en) | Biodegradable and waterproof shaped articles based on thermoplastic starch with lower retrogradation and improved mechanical properties | |
| CN113136054A (en) | Starch/polylactic acid composite material and preparation method and application thereof | |
| TWI577725B (en) | One - step modified Snapchat starch - based biodegradable material and its preparation method | |
| CN112251012A (en) | Method for preparing degradable plastic master batch by soluble salt-assisted plasticizing amylose | |
| CN114230991B (en) | Preparation method of modified epoxidized vegetable oil toughened polylactic acid material | |
| CN1939965B (en) | Hydrophobic degradable biological material, its production and sheet forming products | |
| CN101418081A (en) | Surface esterification treatment method for thermoplastic starch product | |
| CN111363205B (en) | Starch-based degradable plastic with good heat resistance and manufacturing method thereof | |
| CN113388165A (en) | Thermoplastic starch for bioplastic and preparation method thereof | |
| CN109161058B (en) | Starch-based material with cold water solubility characteristic and preparation and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210720 |