CN115558256A - High-transparency toughened fully-biodegradable PLA film and preparation method thereof - Google Patents
High-transparency toughened fully-biodegradable PLA film and preparation method thereof Download PDFInfo
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- CN115558256A CN115558256A CN202111637034.8A CN202111637034A CN115558256A CN 115558256 A CN115558256 A CN 115558256A CN 202111637034 A CN202111637034 A CN 202111637034A CN 115558256 A CN115558256 A CN 115558256A
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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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
- C08J2423/08—Copolymers of ethene
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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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/22—Compounds containing nitrogen bound to another nitrogen atom
- C08K5/24—Derivatives of hydrazine
- C08K5/25—Carboxylic acid hydrazides
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Abstract
The invention provides a high-transparency toughened fully biodegradable PLA film and a preparation method thereof. The PLA film prepared by the invention has high transparency, low haze, high crystallinity, good heat resistance, excellent biodegradability and toughness, and can be widely applied to the fields of mulching films, plastic films, food outer packages and the like.
Description
Technical Field
The invention relates to the technical field of C08J5/18, in particular to a high-transparency toughened fully biodegradable PLA film and a preparation method thereof.
Background
The polylactic acid is a novel biodegradable material prepared from starch, can be completely degraded into carbon dioxide and water by microorganisms in nature, does not leave substances difficult to degrade, and is an effective plastic substitute for relieving the existing 'white pollution' environmental problem. However, polylactic acid products have been limited in application due to problems such as brittleness and poor impact resistance. In the prior art, polylactic acid is mixed with various resins or toughening agents to improve the mechanical property of the polylactic acid and improve the application range of the polylactic acid. Chinese patent CN103724958A discloses a high-toughness polylactic acid composite material, wherein the toughness of polylactic acid is improved by adding butadiene/butyl acrylate block copolymer in polylactic acid. Chinese patent CN111748182A discloses a tough polylactic acid-based material, which is prepared by mixing polylactic acid, halogenated polyether elastomer and ionomer elastomer synthesized by imidazole-containing monomer to improve toughness. However, in these techniques, a non-biodegradable material is added to polylactic acid, which increases the degradation difficulty of polylactic acid and leaves a residue of degradation.
Polymethyl ethylene carbonate is a new type of fully degradable, environmentally friendly plastic based on carbon dioxide and propylene oxide. In the prior art, there is also a method of compounding poly (methyl ethylene carbonate) and polylactic acid to enhance the performance of the polylactic acid material. Chinese patent CN107603168B discloses a polylactic acid-based film, the raw materials for preparation comprise polylactic acid, polybutylene adipate/terephthalate and polymethyl ethylene carbonate-polyurethane copolymer, and the prepared polylactic acid film has excellent toughness, tear resistance and transparency. However, the light transmittance and the haze of the polylactic acid-based film prepared by the patent need to be improved.
Based on the structure, the invention provides a high-transparency toughened fully biodegradable PLA film and a preparation method thereof.
Disclosure of Invention
The invention provides a high-transparency toughened fully biodegradable PLA film, which comprises the following raw materials, by weight, 50-99 parts of degradable polyester, 0.1-3 parts of nucleating agent, 0.1-3 parts of ethylene terpolymer and 0.1-5 parts of functional auxiliary agent; the degradable polyester comprises polylactic acid, and the mass ratio of the polylactic acid in the degradable polyester is 50-75%.
In a preferred embodiment, the mass ratio of polylactic acid in the degradable polyester is 71.4%.
In a preferred embodiment, the degradable polyester further comprises at least one of polybutylene adipate-terephthalate, polymethyl ethylene carbonate, polybutylene succinate, polycaprolactone, polyglycolic acid, and polyhydroxybutyrate.
In a preferred embodiment, the degradable polyesters are polybutylene adipate terephthalate and polymethylethylene carbonate.
In the present application, the mass ratio of polybutylene adipate-terephthalate to polymethyl ethylene carbonate in the degradable polyester is (10-20): (10-30). More preferably, the mass ratio of the polybutylene adipate-terephthalate to the polymethyl ethylene carbonate is 10.
In a preferred embodiment, the degradable polyester has a mass ratio of polylactic acid, polybutylene adipate-terephthalate and polymethyl ethylene carbonate of 70:10:18.
in the present application, the selected polylactic acid has a melt index of 5 to 25g/10min (210 ℃/2.16 kg). More preferably, the polylactic acid has a melt index of 8g/10min (210 ℃/2.16 kg) and a refractive index of 1.4 to 1.42.
In the application, the selected polybutylene adipate-terephthalate has a melt index of 5-25 g/10min (210 ℃/2.16 kg) and a tensile strength of not less than 18MPa, and is more preferably purchased from Lanshan Tunghe, and the model of the polybutylene adipate-terephthalate is THJS 6802.
In the present application, the molecular weight of the polymethylethylene carbonate is 50000 to 100000, and the refractive index of the polymethylethylene carbonate is 1.43 to 1.46. More preferably, the polymethylethylene carbonate is purchased from Henan Tianguan New biomaterials Co.
In the experimental process, the applicant finds that when polylactic acid with the refractive index of 1.4-1.42 is selected and polymethyl ethylene carbonate with the refractive index of 1.43-1.46 is added, the compatibility of the polylactic acid and the polymethyl ethylene carbonate is improved, and the transparency and the haze of the prepared film are also improved. And the applicant has also found in the course of experiments that when the mass ratio of polylactic acid, polybutylene adipate-terephthalate and polymethyl ethylene carbonate is 70:10:18, the biological decomposition rate of the film can be further improved, and the mechanical properties and the processing ability of the film can be improved. When the contents of the poly (methyl ethylene carbonate) and the poly (butylene adipate-terephthalate) are increased, the glass transition temperature of the film is lowered, and the tensile strength of the film is reduced.
In a preferred embodiment, the nucleating agent is selected from at least one of hydrazide compounds, soap mixtures of phenylphosphonic acid, metal organophosphate compounds, sorbitol compounds.
In a preferred embodiment, the hydrazide compound is at least one selected from the group consisting of dibenzoyl sebacate hydrazide, dihydrazide sebacate, salicylic dicarboxylic acid hydrazide and adipic acid dihydrazide, and more preferably, the hydrazide compound is dibenzoyl sebacate hydrazide.
In a preferred embodiment, the ethylene terpolymer further comprises at least one active functional group selected from a hydroxyl group, an amino group, an epoxy group, and a carboxyl group.
In a preferred embodiment, the ethylene terpolymer further comprises an epoxy-reactive functional group. More preferably, the ethylene terpolymer is an ethylene-butyl acrylate-glycidyl methacrylate terpolymer. Purchased from dow chemical under the designation PTW.
In the experimental process, the applicant finds that the ethylene terpolymer containing the epoxy active functional group can react with active groups such as terminal carboxyl and the like generated by the decomposition of polylactic acid in the processing process, so that the viscosity of the system is improved, the melt strength of the system is improved, and the mechanical property of the film is improved.
In a preferred embodiment, the functional assistant is at least one selected from the group consisting of an antioxidant, a lubricant, a plasticizer, a compatibilizer, and an antistatic agent.
In a preferred embodiment, the functional auxiliary agent is an antioxidant and a lubricant, and the mass ratio of the antioxidant to the lubricant is (0.1-5): (0.1-0.5).
In a preferred embodiment, the mass ratio of the antioxidant to the lubricant is 0.2.
In a preferred embodiment, the antioxidant is at least one selected from the group consisting of hindered phenolic antioxidants, hindered amine antioxidants, phosphite antioxidants, and thioester antioxidants. More preferably, the antioxidant is a phosphite antioxidant.
In a preferred embodiment, the phosphite antioxidant is selected from at least one of triphenyl phosphite, triisooctyl phosphite, trilauryl phosphite, pentaerythritol diisodecyl diphosphite, and diphenyl monoisooctyl phosphite.
In a preferred embodiment, the phosphite antioxidant is triisooctyl phosphite.
In a preferred embodiment, the lubricant is at least one selected from the group consisting of organic substances having amide groups, ester groups, siloxy groups, hydroxyl groups, and C18-30 long carbon chain molecular structures.
In a preferred embodiment, the lubricant is an organic substance having an amide group structure, and the lubricant has an acid value of 10mgKOH/g and an amine value of 2.5mgKOH/g.
In a preferred embodiment, the preparation raw materials comprise, by weight, 70 parts of polylactic acid, 10 parts of polybutylene adipate-terephthalate, 18 parts of polymethyl ethylene carbonate, 0.7 part of nucleating agent, 0.8 part of ethylene terpolymer, 0.2 part of antioxidant and 0.3 part of lubricant.
The second aspect of the invention provides a preparation method of a high-transparency toughened fully biodegradable PLA film, which comprises the following steps:
s01, adding the degradable polyester, the nucleating agent, the ethylene terpolymer and the functional auxiliary agent into a mixer for mixing, wherein the mixing rotating speed is 300-1000rpm, and the mixing time is 3-20min;
s02, uniformly mixing, and then extruding and granulating through a double-screw extruder to obtain the PLA material;
s03, preparing the PLA material into a film at 180-230 ℃ to obtain the PLA film.
In a preferred embodiment, the thickness of the PLA film is 20-200 μm.
In a preferred embodiment, the twin-screw extruder has a temperature of 170 to 220 ℃, a rotation speed of 250 to 500rpm, and a ratio of screw length to screw diameter of (36 to 52): 1.
compared with the prior art, the invention has the following beneficial effects:
1. the biodegradable material with similar refractive index stabilizes the crystallinity of the mixed substance and improves the transparency and haze of the prepared film.
2. In the preparation process of the film, the sebacic acid dibenzoylhydrazide and the ethylene-butyl acrylate-glycidyl methacrylate terpolymer are added, so that the transparency of the film is further improved, the melt strength of the system is improved through the reaction of the active groups, and the mechanical property of the film is improved.
3. The film prepared by the invention has high transparency, high crystallinity, good heat resistance, excellent biodegradability and toughness, and can be widely applied to the fields of mulching films, plastic films, food outer packages and the like.
Detailed Description
Example 1
According to the first aspect of the embodiment, the preparation raw materials comprise, by weight, 50 parts of polylactic acid, 15 parts of polybutylene adipate-terephthalate, 30 parts of polymethyl ethylene carbonate, 0.5 part of nucleating agent, 0.5 part of ethylene terpolymer, 0.5 part of antioxidant and 3.5 parts of wetting agent.
Wherein polylactic acid is available from Doudaku Bien under the trademark L175.
PBAT is purchased from Tunghe blue mountain and has the brand number THJS-6802.
Polymethyl ethylene carbonate was purchased from new biomaterials, inc.
The nucleating agent is sebacic acid dibenzoyl hydrazine with the brand of TMC-300, and is purchased from Shanxi chemical research institute.
The ethylene terpolymer is an ethylene-butyl acrylate-glycidyl methacrylate terpolymer. Purchased from dow chemical under the designation PTW.
The antioxidant was triisooctyl phosphite, purchased from basf.
The humectant was purchased from Japan Huawang under the trade name EBFF.
The second aspect of this embodiment provides a method for preparing a high-transparency toughened fully biodegradable PLA film, which includes the following steps:
s01, adding polylactic acid, polybutylene adipate-terephthalate, polymethyl ethylene carbonate, a nucleating agent, an ethylene terpolymer, an antioxidant and a lubricant into a mixer, and mixing at the mixing speed of 300rpm for 20min;
s02, after being uniformly mixed, extruding and granulating through a double-screw extruder, wherein the temperature of the double-screw extruder is 180 ℃, and the rotating speed of the double-screw extruder is 500rpm, so as to obtain the PLA material;
s03, preparing a PLA material into a film at 190 ℃ to obtain a PLA film with the thickness of 150 mu m.
Example 2
According to the first aspect of the embodiment, the preparation raw materials comprise, by weight, 60 parts of polylactic acid, 20 parts of polybutylene adipate-terephthalate, 14 parts of polymethyl ethylene carbonate, 0.7 part of a nucleating agent, 0.3 part of an ethylene terpolymer, 0.5 part of an antioxidant and 4.5 parts of a wetting agent.
Wherein polylactic acid is available from Doudaku Bien under the trademark L175.
PBAT is purchased from Tunghe blue mountain, and has the brand number of THJS-6802.
Polymethyl ethylene carbonate was purchased from new biomaterials, inc.
The nucleating agent is sebacic acid dibenzoylhydrazide with the trademark of TMC-300, and is purchased from Shanxi chemical research institute.
The ethylene terpolymer is an ethylene-butyl acrylate-glycidyl methacrylate terpolymer. Purchased from dow chemical under the designation PTW.
The antioxidant was triisooctyl phosphite, purchased from basf.
The humectant was purchased from King of Japan under the trade name EBFF.
The second aspect of this embodiment provides a method for preparing a high-transparency toughened fully biodegradable PLA film, which includes the following steps:
s01, adding polylactic acid, polybutylene adipate-terephthalate, polymethyl ethylene carbonate, a nucleating agent, an ethylene terpolymer, an antioxidant and a lubricant into a mixer, and mixing for 12min at the mixing speed of 500 rpm;
s02, after being uniformly mixed, extruding and granulating through a double-screw extruder, wherein the temperature of the double-screw extruder is 190 ℃, and the rotating speed of the double-screw extruder is 400rpm, so as to obtain the PLA material;
s03, preparing a PLA material into a film at 200 ℃ to obtain a PLA film with the thickness of 150 mu m.
Example 3
In the first aspect of this embodiment, in order to provide a high-transparency toughened fully biodegradable PLA film, the preparation raw materials include, by weight, 70 parts of polylactic acid, 10 parts of polybutylene adipate-terephthalate, 18 parts of polymethyl ethylene carbonate, 0.7 part of a nucleating agent, 0.8 part of an ethylene terpolymer, 0.2 part of an antioxidant, and 0.3 part of a wetting agent.
Wherein polylactic acid is available from Doudaku Bien under the trademark L175.
PBAT is purchased from Tunghe blue mountain and has the brand number THJS-6802.
Polymethyl ethylene carbonate was purchased from new biomaterials, inc.
The nucleating agent is sebacic acid dibenzoyl hydrazine with the brand of TMC-300, and is purchased from Shanxi chemical research institute.
The ethylene terpolymer is an ethylene-butyl acrylate-glycidyl methacrylate terpolymer. Purchased from dow chemical under the designation PTW.
The antioxidant was triisooctyl phosphite, purchased from basf.
The humectant was purchased from King of Japan under the trade name EBFF.
The second aspect of this embodiment provides a method for preparing a high-transparency toughened fully biodegradable PLA film, which includes the following steps:
s01, adding polylactic acid, polybutylene adipate-terephthalate, polymethyl ethylene carbonate, a nucleating agent, an ethylene terpolymer, an antioxidant and a lubricant into a mixer, and mixing at the mixing speed of 700rpm for 8min;
s02, after being uniformly mixed, extruding and granulating through a double-screw extruder at the temperature of 200 ℃ and the rotating speed of 300rpm to obtain the PLA material;
s03, preparing a PLA material into a film at 210 ℃ to obtain a PLA film with the thickness of 150 mu m.
Example 4
According to the first aspect of the embodiment, the preparation raw materials comprise, by weight, 65 parts of polylactic acid, 10 parts of polybutylene adipate-terephthalate, 20 parts of polymethyl ethylene carbonate, 1 part of a nucleating agent, 1 part of an ethylene terpolymer, 0.4 part of an antioxidant and 2.6 parts of a wetting agent.
Wherein polylactic acid is available from Doudaku Bien under the trademark L175.
PBAT is purchased from Tunghe blue mountain, and has the brand number of THJS-6802.
Polymethyl ethylene carbonate was purchased from new biomaterials, inc.
The nucleating agent is sebacic acid dibenzoylhydrazide with the trademark of TMC-300, and is purchased from Shanxi chemical research institute.
The ethylene terpolymer is an ethylene-butyl acrylate-glycidyl methacrylate terpolymer. Purchased from dow chemical under the designation PTW.
The antioxidant was triisooctyl phosphite, purchased from basf.
The humectant was purchased from King of Japan under the trade name EBFF.
The second aspect of this embodiment provides a method for preparing a high-transparency toughened fully biodegradable PLA film, which includes the following steps:
s01, adding polylactic acid, polybutylene adipate-terephthalate, polymethyl ethylene carbonate, a nucleating agent, an ethylene terpolymer, an antioxidant and a lubricant into a mixer, and mixing at the mixing speed of 1000rpm for 5min;
s02, after being uniformly mixed, extruding and granulating through a double-screw extruder, wherein the temperature of the double-screw extruder is 210 ℃, and the rotating speed of the double-screw extruder is 250rpm, so as to obtain the PLA material;
s03, preparing a PLA material into a film at 220 ℃ to obtain a PLA film with the thickness of 150 mu m.
Performance test
The films prepared in the examples were tested for tensile strength, elongation at break, light transmittance, haze and biodegradability, and the data are shown in table 1 below.
1. Tensile strength: reference GB/T1040-92 assays.
2. Elongation at break: the test is carried out according to the national standard GB/T1040-92.
3. The biodegradation rate was tested for biodegradation of stage 180 with reference to GB/T19277.1-2011.
4. The light transmittance and haze were measured by a light transmittance/haze meter.
TABLE 1
Claims (10)
1. The high-transparency toughened fully biodegradable PLA film is characterized in that the preparation raw materials comprise, by weight, 50-99 parts of degradable polyester, 0.1-3 parts of nucleating agent, 0.1-3 parts of ethylene terpolymer and 0.1-5 parts of functional auxiliary agent; the degradable polyester comprises polylactic acid, and the mass ratio of the polylactic acid in the degradable polyester is 50-75%.
2. The PLA film of claim 1, wherein the degradable polyester further comprises at least one of polybutylene adipate-terephthalate, polymethyl ethylene carbonate, polybutylene succinate, polycaprolactone, polyglycolic acid, polyhydroxybutyrate.
3. The PLA film of claim 2, wherein the degradable polyesters further comprise polybutylene adipate terephthalate and polymethyl ethylene carbonate.
4. The PLA film according to claim 3, wherein the mass ratio of polybutylene adipate-terephthalate and polymethyl ethylene carbonate in the degradable polyester is (10-20): (10-30).
5. The PLA film of any of claims 1-4 wherein the nucleating agent is selected from at least one of hydrazide-type compounds, phenylphosphonic acid soap blends, metal organophosphate compounds, sorbitol compounds.
6. The PLA film as claimed in any one of claims 1 to 4 wherein the functional aid is at least one selected from the group consisting of antioxidants, lubricants, plasticizers, compatibilizers, and antistatic agents.
7. The PLA film as claimed in claim 6, wherein the functional additives are an antioxidant and a lubricant, and the mass ratio of the antioxidant to the lubricant is (0.1-5): (0.1-0.5).
8. The PLA film according to claim 1, wherein the ethylene terpolymer further contains at least one active functional group selected from the group consisting of a hydroxyl group, an amino group, an epoxy group and a carboxyl group.
9. A method for preparing a high-transparency toughened fully biodegradable PLA film according to any one of claims 1-8, comprising the steps of:
s01, adding the degradable polyester, the nucleating agent, the ethylene terpolymer and the functional auxiliary agent into a mixer for mixing, wherein the mixing rotating speed is 300-1000rpm, and the mixing time is 3-20min;
s02, uniformly mixing, and then extruding and granulating through a double-screw extruder to obtain the PLA material;
s03, preparing the PLA material into a film at 180-230 ℃ to obtain the PLA film.
10. The method for preparing a PLA film as claimed in claim 9, wherein the PLA film has a thickness of 20-200 μm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285262A (en) * | 2023-02-27 | 2023-06-23 | 曲靖兴亮实业有限公司 | Preparation method of flame-retardant antistatic plastic packaging material |
| CN116355373A (en) * | 2023-04-20 | 2023-06-30 | 四川大学 | Polylactic acid-based composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109535674A (en) * | 2018-10-25 | 2019-03-29 | 南京五瑞生物降解新材料研究院有限公司 | Using the PPC/PLA/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation |
| CN112210197A (en) * | 2020-10-10 | 2021-01-12 | 莱涤新材料(宁波)有限公司 | Biodegradable polylactic acid film and preparation method thereof |
| CN113845761A (en) * | 2021-08-18 | 2021-12-28 | 浙江中科应化生态新材料科技有限公司 | High-transparency completely degradable film and preparation method thereof |
-
2021
- 2021-12-29 CN CN202111637034.8A patent/CN115558256A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109535674A (en) * | 2018-10-25 | 2019-03-29 | 南京五瑞生物降解新材料研究院有限公司 | Using the PPC/PLA/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation |
| CN112210197A (en) * | 2020-10-10 | 2021-01-12 | 莱涤新材料(宁波)有限公司 | Biodegradable polylactic acid film and preparation method thereof |
| CN113845761A (en) * | 2021-08-18 | 2021-12-28 | 浙江中科应化生态新材料科技有限公司 | High-transparency completely degradable film and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116285262A (en) * | 2023-02-27 | 2023-06-23 | 曲靖兴亮实业有限公司 | Preparation method of flame-retardant antistatic plastic packaging material |
| CN116355373A (en) * | 2023-04-20 | 2023-06-30 | 四川大学 | Polylactic acid-based composite material and preparation method thereof |
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