CN113736237A - Preparation method and application of modified starch thermoplastic composite material - Google Patents
Preparation method and application of modified starch thermoplastic composite material Download PDFInfo
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- CN113736237A CN113736237A CN202111237733.3A CN202111237733A CN113736237A CN 113736237 A CN113736237 A CN 113736237A CN 202111237733 A CN202111237733 A CN 202111237733A CN 113736237 A CN113736237 A CN 113736237A
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- 239000004368 Modified starch Substances 0.000 title claims abstract description 43
- 229920000881 Modified starch Polymers 0.000 title claims abstract description 43
- 235000019426 modified starch Nutrition 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 16
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 62
- 239000008107 starch Substances 0.000 claims abstract description 62
- 235000019698 starch Nutrition 0.000 claims abstract description 62
- 239000004626 polylactic acid Substances 0.000 claims abstract description 33
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000010902 straw Substances 0.000 claims description 9
- 239000002028 Biomass Substances 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 229920006238 degradable plastic Polymers 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 240000003183 Manihot esculenta Species 0.000 claims description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 3
- 238000010096 film blowing Methods 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 229920001592 potato starch Polymers 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 240000008042 Zea mays Species 0.000 claims 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims 1
- 235000005822 corn Nutrition 0.000 claims 1
- 235000013312 flour Nutrition 0.000 claims 1
- 239000002029 lignocellulosic biomass Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 16
- 229920003023 plastic Polymers 0.000 description 12
- 239000004033 plastic Substances 0.000 description 12
- 230000002209 hydrophobic effect Effects 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 238000012986 modification Methods 0.000 description 9
- 230000004048 modification Effects 0.000 description 9
- 239000004594 Masterbatch (MB) Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 241000345998 Calamus manan Species 0.000 description 3
- 229920002261 Corn starch Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000008120 corn starch Substances 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 235000012950 rattan cane Nutrition 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000012074 organic phase Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
- C08L3/06—Esters
-
- 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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention belongs to the technical field of industrial biology, and particularly relates to a preparation method and application of a modified starch thermoplastic composite material. The modified starch used in the invention is prepared by the following method: mixing starch with water-soluble alkaline catalyst Na2CO3Uniformly mixing, placing for 12 hours at 4 ℃ in a sealed manner, balancing the moisture of the starch to 10-35 wt%, and then uniformly mixing with the maleic anhydride diluted by the ethanol. Reacting for several minutes under the microwave damp-heat condition to obtain the product; the modified starch and Polylactic acid (PLA) are mixed and granulated according to a certain mass ratio (preferably 1: 1-1: 2.5), and the degradable composite material can be further prepared. The modified starch prepared by the invention has better thermoplasticity and good compatibility with PLA, can effectively improve the performance of the starch-PLA composite material, and the preparation processSimple, safe and environment-friendly, and low in production cost.
Description
Technical Field
The invention belongs to the technical field of industrial biology, and particularly relates to a preparation method and application of a modified starch thermoplastic composite material.
Technical Field
The plastic product has light weight, corrosion resistance and good chemical stability, and is widely applied to industry and daily life. However, general-purpose plastics are mainly synthesized by petrochemical products and are difficult to degrade, and plastic wastes cause serious pollution to the global environment. Therefore, research and development of degradable plastics become the focus of sustainable development of ecological environment, and have great significance on development of fields such as energy substitution, environmental protection and the like.
Among degradable plastics, Polylactic acid (PLA) is known as "green plastic" and is a completely biodegradable and environmentally friendly plastic. It has excellent thermoplasticity, mechanical performance and processing performance, but its price is higher. The modified epoxy resin is required to be modified, so that the cost is further reduced while the original performance is maintained or slightly reduced. Filling modification is a common method for reducing cost, and common fillers comprise calcium carbonate, talcum powder, mica, fiber, starch and the like. Starch is a renewable resource rich in reserves in nature and has great potential in the application field of biodegradable plastics. And the starch is low in price, and the market price of the common starch is only about 1/10 of PLA, so that the common starch is more popular in the plastic industry. The invention reduces the price of the degradable composite material by adding biomass such as starch, straw and the like as much as possible.
However, the polyhydroxy structure of the starch makes the starch have strong hydrophilicity, and when the starch is compounded with PLA with hydrophobicity, the interface compatibility of the starch and the PLA is poor, so that the mechanical property and the stability of the product are directly influenced, the processing temperature of the PLA is higher, and the starch does not have good thermoplasticity at higher temperature. The hydrophobic modification of starch is the key to the preparation of good-performance starch-PLA composite materials. The preparation methods of starch hydrophobic modification commonly used at present comprise a wet method, an organic phase method and a dry method. The wet process can generate wastewater in the preparation, the reaction time is long, and the efficiency is low; a large amount of solvent is used in the production process of the organic phase method, so that the environmental pollution is easily caused, and the production cost is high; the dry process has the defects of non-uniform reaction, unstable product quality and the like. Microwave is an electromagnetic wave with extremely short wavelength, and has been widely applied to the field of food chemical industry as a convenient and time-saving heating energy source based on the heating characteristics of high efficiency, energy conservation and the like. The microwave wet heat treatment (microwave semi-dry method, namely under the combined action of microwave and 10-35 wt% of low moisture) is beneficial to improving the problem of uneven reaction due to the addition of a small amount of water in the system, the thermoplasticity of the starch can be improved by blending water and ethanol serving as a plasticizer with the starch, and the research shows that the heat stability and the hydrophobic property of the starch can be improved by the microwave wet heat treatment. The starch is subjected to synergistic hydrophobic modification by microwave wet heat treatment and maleic anhydride, and the starch and PLA are used for preparing a degradable composite material to improve the product performance, so that no application and relevant report exists in the aspect.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a preparation method and application of a modified starch thermoplastic composite material, and the invention provides a method which is simple in process, safe and environment-friendly and can effectively carry out synergistic hydrophobic modification (maleic anhydride modification and microwave wet heat treatment) on starch so as to improve the compatibility of the starch and polylactic acid (PLA) and simultaneously prepare a modified starch-PLA degradable composite material with good performance.
A preparation method of a modified starch thermoplastic composite material comprises the steps of uniformly mixing modified starch and PLA according to the mass ratio of 1: 0.5-9; adding lignocellulose biomass, mixing uniformly, and drying until the water content is below 5%; and (3) granulating at 175-185 ℃ by using a double-screw extrusion granulator to obtain the modified starch-PLA degradable composite material.
As an improvement, the modified starch is modified by the following steps: uniformly mixing starch and an alkaline catalyst solution, wherein the alkaline catalyst accounts for 0.5-2 wt% of the dry basis of the starch, standing at 4 ℃ in a sealed manner for 12 hours, balancing the moisture of the starch to 10-35 wt%, spraying maleic anhydride diluted by 3 times of ethanol, uniformly mixing, and reacting for 5-8 minutes under the microwave power of 259-700 w.
As an improvement, the basic catalyst is Na2CO3。
As an improvement, Na2CO3The modified starch is 1-1.5 wt% of the dry base of the starch, and the maleic anhydride is 2-6 wt% of the dry base of the starch.
As a refinement, the starch is corn starch, tapioca starch or potato starch.
The improvement is that the lignocellulose biomass is straw powder, wood powder or rice bran powder.
As an improvement, the mass ratio of the modified starch to the PLA is 1: 1-2.5.
The application of any one of the modified starch thermoplastic composite materials in preparing furniture, tableware or degradable plastic bags.
The preparation process is extrusion molding, injection molding or film blowing.
Has the advantages that:
compared with the prior art, the preparation method and the application of the modified starch thermoplastic composite material have the following advantages:
1. the microwave wet heat treatment can improve the hydrophobic property of the starch, and the microwave wet heat treatment and the maleic anhydride are adopted to carry out the synergistic hydrophobic modification on the starch. A small amount of water is added into the system to help the alkaline catalyst Na2CO3The starch granules are uniformly dispersed in the starch granules, the problem of nonuniform reaction of the system is solved, and the microwave wet heat treatment method has short reaction time, high reaction efficiency and no environmental pollution.
2. The modified starch enhances the compatibility with polylactic acid (PLA), has stronger interfacial bonding capability, and finally improves the mechanical property of the starch-PLA composite material.
3. According to the invention, on the basis of starch modification, biomass such as starch and straw is added as much as possible, so that a large amount of biomass generated in agriculture and forestry industry and food processing industry is effectively utilized, the additional value of the biomass is improved, and the production cost of the starch degradable composite material is reduced.
Detailed Description
Example 1
500 g of oven dried corn starch (dry basis) was mixed with 5 g of Na dissolved in 125 mL of water2CO3(accounting for 1 wt% of the dry base of the starch) and standing for 12h in a closed manner at 4 ℃ to balance the water content of the starch to 20%; diluting 20 g of maleic anhydride (accounting for 4 wt% of the dry starch) with 3 times of ethanol, spraying, mixing with the treated starch,treating for 5 min under 595W microwave power to obtain modified starch 1.
Example 2
500 g of oven-dried tapioca starch (dry basis) was mixed with 5 g of Na dissolved in 170 mL of water2CO3(accounting for 1 wt% of the dry base of the starch) and standing for 12h in a closed manner at 4 ℃ to balance the water content of the starch to 25%; diluting 15 g of maleic anhydride (accounting for 3 wt% of the dry starch basis) with 3 times of ethanol, spraying, uniformly mixing with the treated starch, and treating for 6 min under 462W microwave power to obtain modified starch 2.
Example 3
500 g of oven-dried potato starch (dry basis) were mixed with 5 g of Na dissolved in 215 mL of water2CO3(accounting for 1 wt% of the dry base of the starch) and standing for 12h in a closed manner at 4 ℃ to balance the water content of the starch to 30%; diluting 20 g of maleic anhydride (accounting for 4 wt% of the dry starch) with 3 times of ethanol, spraying, uniformly mixing with the treated starch, and treating for 5 min under 595W microwave power to obtain modified starch 3.
Example 4
A modified starch thermoplastic rattan-like material is prepared from the following raw materials in parts by weight: uniformly mixing 35 parts of modified starch, 70 parts of polylactic acid (PLA) and 10 parts of straw powder in example 1 in a high-speed mixer, and drying until the water content is below 5%; and (3) granulating by using a double-screw extrusion granulator, controlling the granulation temperature to be 180-185 ℃, and obtaining the modified starch-PLA degradable composite material master batch. And (3) melting the manufactured master batch at high temperature by using a three-color rattan imitation machine, controlling the temperature to be 180-185 ℃, and performing extrusion molding in a standard rattan mold to prepare the plastic rattan imitation furniture.
Meanwhile, under the same formula and preparation conditions, the modified starch is replaced by the original starch to prepare the native starch-PLA rattan-like material as a control sample. The performance test results of the prepared rattan-like material are shown in table 1.
TABLE 1 Properties of rattan-like materials prepared with different components
As can be seen from Table 1, the corn starch is modified to improve the melt index of the composite rattan-like material, and has better processability; the modified starch has enhanced hydrophobic property, effectively improves the interfacial compatibility with PLA and the tensile strength of the composite material, and endows the material with certain mildew resistance. Meanwhile, the modified starch increases the roughness of the product, so that the rattan-imitated material obtains a certain natural texture. The comparative standards, such as the melt index, tensile strength, roughness, folding endurance and mildew resistance rating, referred to in this example are all conventional measurement methods in the art, and are not described herein again.
Example 5
A modified starch thermoplastic tableware material is prepared from the following raw materials in parts by weight: uniformly mixing 40 parts of modified starch, 60 parts of polylactic acid (PLA) and 10 parts of straw powder in the embodiment 2 in a high-speed mixer, and drying until the water content is below 5%; and (3) granulating by using a double-screw extrusion granulator, controlling the granulation temperature to be 180-185 ℃, and obtaining the modified starch-PLA degradable composite material master batch. The manufactured master batch is melted at high temperature, the temperature is controlled to be 180-185 ℃, and the disposable tableware is prepared by injection molding. Meanwhile, under the same formula and preparation conditions, the modified starch is replaced by the original starch to prepare the original starch-PLA tableware as a control sample. The results of the tests on the properties of the tableware materials obtained are shown in Table 2.
TABLE 2 Properties of the tableware Material prepared with different Components
As can be seen from Table 2, the starch, after being modified, improves the melt index of the composite material and has better processability; the modified starch has enhanced hydrophobic property, and effectively improves the interfacial compatibility with PLA, and the tensile strength and Young modulus of the composite material. Meanwhile, the initial degradation temperature of the modified starch-PLA composite material is increased, and the thermal stability is enhanced. The comparative standards, the melt index, the tensile strength and the thermal initiation degradation temperature, referred to in this example are all conventional measurement methods in the art, and are not described herein again.
Example 6
A modified starch thermoplastic plastic bag material is prepared from the following raw materials in parts by weight: 50 parts of modified starch, 50 parts of polylactic acid (PLA) and 10 parts of straw powder in the embodiment 3 are uniformly mixed in a high-speed mixer, and the moisture is dried to be less than 5%; and (3) granulating by using a double-screw extrusion granulator, wherein the granulating temperature is controlled to be 175-180 ℃, and the modified starch-PLA degradable composite material master batch is obtained. The manufactured master batches are melted at high temperature, the temperature is controlled to be 175-180 ℃, film blowing and bag cutting are carried out, and the degradable plastic bag is prepared. Meanwhile, under the same formula and preparation conditions, the modified starch is replaced by the original starch to prepare the raw starch-PLA plastic bag material as a comparison sample. The results of the performance test of the plastic bag material obtained are shown in table 3.
TABLE 3 Properties of Plastic bag materials prepared with different compositions
As can be seen from Table 3, the starch, after being modified, improves the melt index of the composite material and has better processability; the modified starch has enhanced hydrophobic property, and effectively improves the interfacial compatibility with PLA, and the tensile strength and elongation at break of the plastic bag material. And the plastic bag is filled with one fifth of clear water at normal temperature and stands for 2 min without water leakage. The comparative standards, the test methods of melt index, tensile strength, elongation at break and water leakage, referred to in this example are all conventional measurement methods in the art, and are not described herein again.
In conclusion, the mass ratio of the modified starch to the PLA is 1:1-2.5, and then the degradable composite material is prepared by adding biomass such as straw and the like. The material can reduce the production cost of the composite material under the condition of maintaining or slightly reducing the performance, the additional values of starch and straw are improved, and the performance of the degradable composite material prepared by the modified starch is superior to that of unmodified starch.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.
Claims (9)
1. The preparation method of the modified starch thermoplastic composite material is characterized by uniformly mixing modified starch and polylactic acid according to the mass ratio of 1: 0.5-9; adding lignocellulose biomass, mixing uniformly, and drying until the water content is below 5%; and (3) granulating at 175-185 ℃ by using a double-screw extrusion granulator to obtain the modified starch-PLA degradable composite material.
2. The method for preparing the modified starch thermoplastic composite material according to claim 1, wherein the modified starch is modified by the following steps: uniformly mixing starch and an alkaline catalyst solution, wherein the alkaline catalyst accounts for 0.5-2 wt% of the dry basis of the starch, standing at 4 ℃ in a sealed manner for 12 hours, balancing the moisture of the starch to 10-35 wt%, spraying maleic anhydride diluted by 3 times of ethanol, uniformly mixing, and reacting for 5-8 minutes under the microwave power of 259-700 w.
3. The method of claim 2, wherein the alkaline catalyst is Na2CO3。
4. Process for the preparation of a modified starch thermoplastic composite according to claim 3, characterized in that Na2CO3The modified starch is 1-1.5 wt% of the dry base of the starch, and the maleic anhydride is 2-6 wt% of the dry base of the starch.
5. The method of claim 2, wherein the starch is corn, tapioca or potato starch.
6. The method of claim 1, wherein the lignocellulosic biomass is straw powder, wood flour or rice bran powder.
7. The method for preparing the modified starch thermoplastic composite material according to claim 1, wherein the mass ratio of the modified starch to the polylactic acid is 1: 1-2.5.
8. Use of a modified starch thermoplastic composite material according to any of claims 1 to 7 for the production of furniture, cutlery or degradable plastic bags.
9. Use according to claim 8, wherein the production process is extrusion, injection moulding or film blowing.
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| CN202111237733.3A CN113736237A (en) | 2021-10-25 | 2021-10-25 | Preparation method and application of modified starch thermoplastic composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117603402A (en) * | 2024-01-19 | 2024-02-27 | 寿光金远东变性淀粉有限公司 | Composite modified starch for biodegradable plastic and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418081A (en) * | 2008-10-30 | 2009-04-29 | 吉林大学 | Surface esterification treatment method for thermoplastic starch product |
| CN112391043A (en) * | 2020-11-25 | 2021-02-23 | 宁夏禾易源生物科技有限公司 | Starch-based alloy environment-friendly material and preparation method thereof |
| CN112876745A (en) * | 2021-02-04 | 2021-06-01 | 杭州之西科技有限公司 | Antibacterial biodegradable tableware and preparation method thereof |
-
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- 2021-10-25 CN CN202111237733.3A patent/CN113736237A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418081A (en) * | 2008-10-30 | 2009-04-29 | 吉林大学 | Surface esterification treatment method for thermoplastic starch product |
| CN112391043A (en) * | 2020-11-25 | 2021-02-23 | 宁夏禾易源生物科技有限公司 | Starch-based alloy environment-friendly material and preparation method thereof |
| CN112876745A (en) * | 2021-02-04 | 2021-06-01 | 杭州之西科技有限公司 | Antibacterial biodegradable tableware and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 梁兴泉等: "微波法合成木薯淀粉马来酸酐酯", 《化工时刊》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117603402A (en) * | 2024-01-19 | 2024-02-27 | 寿光金远东变性淀粉有限公司 | Composite modified starch for biodegradable plastic and preparation method thereof |
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