CN112480481A - Pressure-resistant food packaging composite film for plateau environment and preparation method thereof - Google Patents
Pressure-resistant food packaging composite film for plateau environment and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/04—Alginic acid; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/14—Hemicellulose; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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Abstract
The application belongs to the packaging material field, relates to a withstand voltage food package complex film for plateau environment, including the complex film, the raw materials of complex film include: plant starch, hydroxypropyl methyl cellulose, metallocene polyethylene, corn bran extract, elastomer, sodium alginate, a toughening agent and an auxiliary agent. The composite film provided by the invention is modified by a corn husk extract, so that the composite film has high impact resistance and tensile strength, and has low elongation at break, so that the product is not easy to deform, has dimensional stability, can adapt to air pressure difference brought by a plateau environment, and avoids bag expansion and fracture.
Description
Technical Field
The invention belongs to the field of industrial packaging materials, relates to a food packaging composite film, and particularly relates to a pressure-resistant food packaging composite film for a plateau environment and a preparation method thereof.
Background
The composite food packaging film is a common packaging material, is used for sealing food or daily necessities, and plays a role in keeping fresh and storing. With the continuous development of the material field, the requirements on novel packaging materials are higher and higher, so that the severe use environment is met.
The traditional composite food packaging film has the characteristics of complex geographical environment, large terrain height and low drop, strong radiation, low pressure and oxygen deficiency in plateau environment, and is easy to have bag expansion after entering plateau environment in a sealed state, so that the packaging film is deformed or even broken, and the storage effect of the packaging film is seriously influenced. Therefore, there is a need for improvements in composite food packaging films to accommodate high altitude environments.
The Chinese patent with publication number CN106903951B discloses a pressure-resistant food packaging composite film suitable for plateau environment and a preparation method thereof, wherein the composite film sequentially comprises a corona layer, a middle layer and a heat-sealing layer, wherein the heat-sealing layer accounts for 21-28%, the middle layer accounts for 52-59% and the corona layer accounts for 20%; the raw material of the corona layer is binary copolymerization PP; the raw materials of the middle layer comprise homopolymerized PP and POE elastomer, and the raw materials of the heat sealing layer comprise ternary copolymerized PP, anti-blocking agent and POE elastomer.
The packaging composite film of the technical scheme improves the impact resistance and the pressure resistance of the product, but due to the limitation of raw materials, the expansion-resistant bag is poor in capacity and easy to deform.
Disclosure of Invention
The purpose of the application is to solve the problems and provide a pressure-resistant food packaging composite film for plateau environment and a preparation method thereof;
in order to achieve the purpose, the invention adopts the following technical scheme:
the application creatively provides a withstand voltage food package complex film for plateau environment, including the complex film, the raw materials of complex film include: plant starch, hydroxypropyl methyl cellulose, metallocene polyethylene, corn bran extract, elastomer, sodium alginate, a toughening agent and an auxiliary agent.
In the above pressure-resistant food packaging composite film for plateau environment, the composite film comprises the following raw materials in parts by weight: 55-64 parts of plant starch, 20-35 parts of hydroxypropyl methyl cellulose, 20-35 parts of metallocene polyethylene, 5-15 parts of corn husk extract, 8-12 parts of elastomer, 2-13 parts of sodium alginate, 1-10 parts of toughening agent and 1-10 parts of auxiliary agent.
In the pressure-resistant food packaging composite film for plateau environments, the corn bran extract is defatted corn bran hemicellulose.
In the pressure-resistant food packaging composite film for the plateau environment, the plant starch is one or more of corn starch, mung bean starch, wheat starch, sorghum starch and potato starch.
In the pressure-resistant food packaging composite film for the plateau environment, the elastomer is one or more of a polyamide thermoplastic elastomer, a thermoplastic polyolefin elastomer or an ethylene copolymer thermoplastic elastomer.
In the pressure-resistant food packaging composite film for plateau environments, the toughening agent is one or more of a polyurethane toughening agent, a polyolefin toughening agent or a polyester toughening agent.
In the pressure-resistant food packaging composite film for plateau environments, the auxiliary agent is one or more of an antioxidant, an antistatic agent, a light stabilizer and a slip agent.
In the pressure-resistant food packaging composite film for plateau environments, the antistatic agent is a nonionic antistatic agent; the slip agent is one or more of oleamide, erucamide or organosilicon slip agent.
The application also creatively provides a preparation method of the pressure-resistant food packaging composite film for the plateau environment, which comprises the following steps:
1)1) mixing plant starch and corn bran extract into a premix according to a set proportion, preparing the premix and water into an aqueous solution, and gelatinizing the aqueous solution at 80-100 ℃ for 25-40 min;
2) cooling the gelatinized aqueous solution to 50-60 ℃, adding hydroxypropyl methyl cellulose, an elastomer, metallocene polyethylene, sodium alginate, a toughening agent and an auxiliary agent according to a set proportion, mixing, and then performing melt extrusion through a double-screw extruder to obtain a molten liquid;
3) the molten liquid is pressed at 70 ℃ and uniformly distributed on a casting steel plate through a spray lip, and the casting steel plate is dried at 70-90 ℃ to form the composite film.
In the preparation method of the pressure-resistant food packaging composite film for the plateau environment, in the step 1), the weight ratio of the premix to the water in the aqueous solution is 1: 10; in the step 2), the melting temperature of the double-screw extruder is 240-270 ℃.
Compared with the prior art, the invention has the advantages that:
the composite membrane provided by the invention is modified by the corn husk extract, so that the composite membrane has higher impact resistance and tensile strength, and has smaller elongation at break, so that the product is not easy to deform, has dimensional stability, can adapt to air pressure difference caused by a plateau environment, and avoids bag expansion and fracture.
Compared with the conventional polyethylene, the metallocene polyethylene has concentrated molecular weight distribution and good processability, has a compatibilization effect when being blended with plant starch, and effectively improves the uniformity of a system, thereby improving the tensile strength of a product. Moreover, metallocene polyethylene has relatively regular branched chains, and the sliding among the branched chains generates large friction force, thereby enhancing the tensile strength.
The defatted corn bran hemicellulose is extracted from defatted corn bran by calcium hydroxide solution, and belongs to non-cellulose polysaccharide. The polymer has certain branching degree, and can be interwoven with a macromolecular polymer through hydrogen bonds to form a network structure in a blending system, so that the mechanical system performance of the polymer is adjusted, and the polymer is not easy to deform.
Detailed Description
Further illustrated by the following specific examples;
example one
The pressure-resistant food packaging composite film for the plateau environment is characterized by comprising a non-woven fabric material made of composite fibers, wherein the composite film comprises the following raw materials in parts by weight: 55 parts of plant starch, 20 parts of hydroxypropyl methyl cellulose, 35 parts of metallocene polyethylene, 15 parts of corn bran extract, 12 parts of elastomer, 2 parts of sodium alginate and 1 part of auxiliary agent.
Specifically, the corn bran extract is defatted corn bran hemicellulose. The plant starch is corn starch. The elastomer is a polyamide thermoplastic elastomer. The sodium alginate can further improve the compatibility and improve the processing performance of the blending system. The auxiliary agent is antioxidant, antistatic agent and slip agent. The ratio of the antioxidant to the antistatic agent to the slip agent is 2:1: 5. The antioxidant is phosphite ester. The antistatic agent is a nonionic antistatic agent. The slip agent is oleamide. The metallocene polyethylene adopts metallocene linear low density polyethylene.
The extraction method of the degreased corn bran hemicellulose comprises the following steps:
grinding corn bran, sieving with 100 mesh sieve, defatting with anhydrous ether, hydrolyzing the defatted corn bran powder with high temperature resistant alpha-amylase solution at pH6.5 for 3 hr, centrifuging, and recovering residue. Soaking the residue in deionized water for 1 hr, oven drying at low temperature, and storing.
Adding the corn bran residues into 0.3% calcium hydroxide aqueous solution at a solid-to-liquid ratio of 1:10(g/mL), extracting under shaking in a thermostatic water bath environment at 60 ℃ for 4h, and filtering to obtain filtrate.
The filtrate was neutralized with concentrated acetic acid or 6mol/L sodium hydroxide solution to pH7, the extract was concentrated to 10mL at low temperature, the extract was stirred and washed with 40mL of anhydrous ethanol for 12 h.
Separating precipitate, and drying at 60 deg.C for 24 hr to obtain defatted corn bran hemicellulose.
The preparation method of the pressure-resistant food packaging composite film for the plateau environment comprises the following steps:
1) mixing plant starch and corn bran extract at the above ratio to obtain a premix, mixing the premix and water at a weight ratio of 1:10 to obtain an aqueous solution, and gelatinizing at 80 deg.C for 30 min;
2) cooling the gelatinized starch aqueous solution to 50-60 ℃, adding hydroxypropyl methyl cellulose, an elastomer, metallocene polyethylene, sodium alginate, a toughening agent and an auxiliary agent according to the proportion, mixing, and melting and extruding the mixture together through a double-screw extruder at the temperature of 240-270 ℃ to obtain a molten liquid;
3) the molten liquid is pressed at 70 ℃ and uniformly distributed on a casting steel plate through a spray lip, and the casting steel plate is dried at 70-90 ℃ to form the composite film.
Example two
The pressure-resistant food packaging composite film for the plateau environment is characterized by comprising a non-woven fabric material made of composite fibers, wherein the composite film comprises the following raw materials in parts by weight: 64 parts of plant starch, 35 parts of hydroxypropyl methyl cellulose, 28 parts of metallocene polyethylene, 8 parts of corn bran extract, 8 parts of elastomer and 9 parts of sodium alginate 5 parts of auxiliary agent.
Specifically, the corn bran extract is defatted corn bran hemicellulose. The plant starch is a mixture of corn starch and mung bean starch in a weight ratio of 8: 1. The elastomer is a thermoplastic polyolefin elastomer. The auxiliary agents are antioxidant, antistatic agent, light stabilizer and slip agent. The ratio of antioxidant, antistatic agent, light stabilizer and slip agent was 3:3:1: 2. The antioxidant is phosphite ester. The antistatic agent is a nonionic antistatic agent. The slip agent is an organic silicon slip agent. The metallocene polyethylene adopts metallocene linear low density polyethylene.
The extraction method of the hemicellulose from the defatted corn bran is the same as that of the first embodiment.
The preparation method of the pressure-resistant food packaging composite film for the plateau environment comprises the following steps:
1) mixing plant starch and corn bran extract at the above ratio to obtain a premix, mixing the premix and water at a weight ratio of 1:10 to obtain an aqueous solution, and gelatinizing at 95 deg.C for 27 min;
2) cooling the gelatinized starch aqueous solution to 50-60 ℃, adding hydroxypropyl methyl cellulose, an elastomer, metallocene polyethylene, sodium alginate, a toughening agent and an auxiliary agent according to the proportion, mixing, and melting and extruding the mixture together through a double-screw extruder at the temperature of 240-270 ℃ to obtain a molten liquid;
3) the molten liquid is pressed at 70 ℃ and uniformly distributed on a casting steel plate through a spray lip, and the casting steel plate is dried at 70-90 ℃ to form the composite film.
EXAMPLE III
The pressure-resistant food packaging composite film for the plateau environment is characterized by comprising a non-woven fabric material made of composite fibers, wherein the composite film comprises the following raw materials in parts by weight: 60 parts of plant starch, 28 parts of hydroxypropyl methyl cellulose, 24 parts of metallocene polyethylene, 6 parts of corn bran extract, 10 parts of elastomer, 12 parts of sodium alginate and 4 parts of auxiliary agent.
Specifically, the corn bran extract is defatted corn bran hemicellulose. The plant starch is a mixture of corn starch and wheat starch in a weight ratio of 5: 1. The elastomer is ethylene copolymer thermoplastic elastomer, and specifically ethylene octene copolymer thermoplastic elastomer is selected. The auxiliary agent is antioxidant, antistatic agent and slip agent. The ratio of the antioxidant to the antistatic agent to the slip agent is 1:1: 3. The antioxidant is phosphite ester. The antistatic agent is a nonionic antistatic agent. The slip agent is a mixture of oleamide and erucamide mixed in a weight ratio of 1: 1.25. The metallocene polyethylene adopts metallocene linear low density polyethylene.
The extraction method of the hemicellulose from the defatted corn bran is the same as that of the first embodiment.
The preparation method of the pressure-resistant food packaging composite film for the plateau environment comprises the following steps:
1) mixing plant starch and corn bran extract at the above ratio to obtain a premix, mixing the premix and water at a weight ratio of 1:10 to obtain an aqueous solution, and gelatinizing at 90 deg.C for 40 min;
2) cooling the gelatinized starch aqueous solution to 50-60 ℃, adding hydroxypropyl methyl cellulose, an elastomer, metallocene polyethylene, sodium alginate, a toughening agent and an auxiliary agent according to the proportion, mixing, and melting and extruding the mixture together through a double-screw extruder at the temperature of 240-270 ℃ to obtain a molten liquid;
3) the molten liquid is pressed at 70 ℃ and uniformly distributed on a casting steel plate through a spray lip, and the casting steel plate is dried at 70-90 ℃ to form the composite film.
Comparative example 1
This comparative example is substantially the same as example one except that: no corn bran extract was added.
Comparative example No. two
This comparative example is substantially the same as example one except that: metallocene polyethylene was replaced with conventional linear low density polyethylene.
Comparative example No. three
This comparative example is substantially the same as example one except that: no elastomer was added.
Comparative example No. four
This comparative example is substantially the same as example one except that: the addition amount of starch was 80 parts by weight.
Test example 1
The composite films of example one, example two, example three, comparative example one, comparative example two and comparative example three were tested for tensile strength and elongation at break, respectively, and the results are shown in table 1 below:
TABLE 1 summary of the tensile Strength and elongation at Break test results for each composite film
As can be seen from the above table, the composite film prepared by the present invention has better tensile strength and lower elongation at break, i.e., the composite film added with the corn husk extract has higher tensile strength and smaller elongation at break; the addition of metallocene polyethylene helps to increase the tensile strength of the composite film over polyethylene and elastomers. The composite film is used in a plateau environment, and can effectively avoid deformation caused by bag expansion while ensuring sufficient tensile strength.
Test example two
The composite membranes of example one, example two, example three, comparative example one, comparative example three and comparative example four were tested for pressure resistance, respectively, using an ABT-3100 pressure vessel for testing, and passing the test of the limit of the lid burst pressure of the aerosol canister, the results are shown in table 2 below:
table 2 summary of compressive strength test results of each composite film
The table shows that the composite membrane prepared by the invention has better compressive strength, namely, the compressive strength of the composite membrane can be improved by adding the corn husk extract and the elastomer and reducing the addition amount of the plant starch, and the composite membrane can resist the pressure difference between the inside and the outside of the composite membrane when being used in a plateau environment.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms composite film, plant starch, hydroxypropylmethylcellulose, corn bran extract, elastomer, metallocene polyethylene, sodium alginate, and adjuvant are used more extensively herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.
Claims (10)
1. The utility model provides a withstand voltage food package complex film for plateau environment, includes the complex film, its characterized in that, the raw materials of complex film include: plant starch, hydroxypropyl methyl cellulose, metallocene polyethylene, corn bran extract, elastomer, sodium alginate and an auxiliary agent.
2. The pressure-resistant food packaging composite film for the plateau environment as claimed in claim 1, wherein the composite film comprises the following raw materials in parts by weight: 55-64 parts of plant starch, 20-35 parts of hydroxypropyl methyl cellulose, 20-35 parts of metallocene polyethylene, 5-15 parts of corn bran extract, 8-12 parts of elastomer, 2-13 parts of sodium alginate and 1-10 parts of auxiliary agent.
3. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 1 or 2, wherein: the corn bran extract is defatted corn bran hemicellulose.
4. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 1 or 2, wherein: the plant starch is one or more of corn starch, mung bean starch, wheat starch, sorghum starch and potato starch.
5. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 1 or 2, wherein: the elastomer is one or more of polyamide thermoplastic elastomer, thermoplastic polyolefin elastomer or ethylene copolymer thermoplastic elastomer.
6. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 1 or 2, wherein: the auxiliary agent is one or more of an antioxidant, an antistatic agent, a light stabilizer and a slip agent.
7. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 6, wherein: the antistatic agent is a nonionic antistatic agent.
8. The pressure-resistant food packaging composite film for use in a plateau environment as claimed in claim 6, wherein: the slip agent is one or more of oleamide, erucamide or organosilicon slip agent.
9. A method for preparing the pressure-resistant food packaging composite film for plateau environment as claimed in any one of claims 1 to 8, comprising the steps of:
1) mixing plant starch and corn bran extract at a set ratio to obtain a premix, preparing the premix and water into an aqueous solution, and gelatinizing at 80-100 deg.C for 25-40 min;
2) cooling the gelatinized aqueous solution to 50-60 ℃, adding hydroxypropyl methyl cellulose, an elastomer, metallocene polyethylene, sodium alginate, a toughening agent and an auxiliary agent according to a set proportion, mixing, and then performing melt extrusion through a double-screw extruder to obtain a molten liquid;
3) the molten liquid is pressed at 70 ℃ and uniformly distributed on a casting steel plate through a spray lip, and the casting steel plate is dried at 70-90 ℃ to form the composite film.
10. The method for preparing the pressure-resistant food packaging composite film for the plateau environment as claimed in claim 9, wherein the method comprises the following steps: in the step 1), the weight ratio of the premix to the water in the aqueous solution is 1: 10; in the step 2), the melting temperature of the double-screw extruder is 240-270 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136068A (en) * | 2021-03-29 | 2021-07-20 | 上海昶法新材料有限公司 | Modified bio-based PE shopping bag film and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700134A (en) * | 2016-11-24 | 2017-05-24 | 广东新佳源生物科技股份有限公司 | Starch-based biodegradable cast film and preparation method thereof |
| CN106903951A (en) * | 2017-03-03 | 2017-06-30 | 河南浩达塑业股份有限公司 | A kind of pressure-resistant food packing composite film suitable for altitude environment and preparation method thereof |
| CN109400966A (en) * | 2018-11-22 | 2019-03-01 | 詹珠兰 | A kind of degradable plastic material formula |
| CN111349272A (en) * | 2020-04-26 | 2020-06-30 | 北京一撕得物流技术有限公司 | High-starch-filled HDPE (high-density polyethylene) film blowing master batch and preparation method thereof |
-
2020
- 2020-11-24 CN CN202011330632.6A patent/CN112480481A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106700134A (en) * | 2016-11-24 | 2017-05-24 | 广东新佳源生物科技股份有限公司 | Starch-based biodegradable cast film and preparation method thereof |
| CN106903951A (en) * | 2017-03-03 | 2017-06-30 | 河南浩达塑业股份有限公司 | A kind of pressure-resistant food packing composite film suitable for altitude environment and preparation method thereof |
| CN109400966A (en) * | 2018-11-22 | 2019-03-01 | 詹珠兰 | A kind of degradable plastic material formula |
| CN111349272A (en) * | 2020-04-26 | 2020-06-30 | 北京一撕得物流技术有限公司 | High-starch-filled HDPE (high-density polyethylene) film blowing master batch and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JIMENEZ, ALBERTO等: "Influence of hydroxypropylmethylcellulose addition and homogenization conditions on properties and ageing of corn starch based films", 《CARBOHYDRATE POLYMERS》 * |
| 徐忠等: "玉米皮半纤维素/壳聚糖/甘油复合膜制备及性质研究", 《中国粮油学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113136068A (en) * | 2021-03-29 | 2021-07-20 | 上海昶法新材料有限公司 | Modified bio-based PE shopping bag film and preparation method thereof |
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