CN116554608A - Preparation process of degradable polystyrene packaging material - Google Patents

Preparation process of degradable polystyrene packaging material Download PDF

Info

Publication number
CN116554608A
CN116554608A CN202310484405.6A CN202310484405A CN116554608A CN 116554608 A CN116554608 A CN 116554608A CN 202310484405 A CN202310484405 A CN 202310484405A CN 116554608 A CN116554608 A CN 116554608A
Authority
CN
China
Prior art keywords
polylactic acid
polystyrene
packaging material
degradable
maleic anhydride
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
Application number
CN202310484405.6A
Other languages
Chinese (zh)
Inventor
殷培所
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Botel Packaging Jiangsu Co ltd
Original Assignee
Botel Packaging Jiangsu Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Botel Packaging Jiangsu Co ltd filed Critical Botel Packaging Jiangsu Co ltd
Priority to CN202310484405.6A priority Critical patent/CN116554608A/en
Publication of CN116554608A publication Critical patent/CN116554608A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/02—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polycarbonates or saturated polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F285/00—Macromolecular compounds obtained by polymerising monomers on to preformed graft polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
    • C08F8/32—Introducing nitrogen atoms or nitrogen-containing groups by reaction with amines
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention relates to the technical field of packaging materials, and discloses a preparation process of a degradable polystyrene packaging material, which utilizes the reaction of amino groups of N- (3-aminopropyl) methacrylamide hydrochloride and anhydride groups of maleic anhydride grafted polylactic acid to obtain acrylamide polylactic acid, so that a polymerizable acrylamide group is introduced into a side chain of the polylactic acid, and then the side chain of the polylactic acid and a styrene monomer undergo cross-linking polymerization by an emulsion polymerization method to obtain polystyrene cross-linked polylactic acid particles, so that a three-dimensional cross-linked structure of polystyrene and polylactic acid is formed, filling modification is carried out on polystyrene resin, and the cross-linked particles contain polystyrene structures, so that the cross-linked particles and the polystyrene resin have good compatibility, and can be uniformly dispersed into a resin matrix, thereby playing a good toughening effect on the polystyrene and endowing the packaging material with excellent biodegradability.

Description

Preparation process of degradable polystyrene packaging material
Technical Field
The invention relates to the technical field of packaging materials, in particular to a preparation process of a degradable polystyrene packaging material.
Background
In recent years, green and environment-friendly degradable materials are greatly developed in various countries, wherein the polylactic acid has the advantages of simple preparation method, good biocompatibility, no toxicity and environment protection, and has wide application in the fields of high polymer materials and degradable materials, for example, patent CN110951176B, a degradable polystyrene resin and a preparation method thereof, the introduction of two biodegradable components of surface-treated lignin fibers and polylactic acid into a polystyrene matrix is disclosed, the degradable polystyrene resin is obtained, and the mechanical property of the material is improved by adding the surface-treated lignin fibers into the matrix resin.
The polystyrene has good gloss, high light transmittance, good colorability and good water resistance, has important application in packaging materials of food packaging, containers and the like, but the traditional polystyrene has the problems of low impact strength, poor toughness and the like, is a research hot spot for toughening and modifying the polystyrene, and is reported in paper PBA-aPS core-shell latex particle toughening and modifying sPS, wherein the latex particles of polybutyl acrylate-polystyrene with a core-shell structure are synthesized by adopting a pre-emulsification-semicontinuous seed emulsion polymerization method, have good compatibility with a polystyrene matrix, can be uniformly distributed in the polystyrene matrix, and have a great toughening effect on the polystyrene. The invention discloses polystyrene cross-linked polylactic acid particles which are applied to polystyrene packaging materials.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a degradable polystyrene packaging material with high mechanical strength and a preparation process thereof.
(II) technical scheme
A degradable polystyrene packaging material comprises the following raw materials in percentage by weight: 70-95% of polystyrene resin, 5-30% of polystyrene cross-linked polylactic acid particles and 0.1-0.6% of antioxidant.
The preparation process of the degradable polystyrene packaging material comprises the following steps: adding polystyrene resin, polystyrene cross-linked polylactic acid particles and an antioxidant into a high-speed mixer, uniformly mixing, and then melting, extruding and granulating in a double-screw extruder to obtain the degradable polystyrene packaging material.
Further, the twin-screw extruder had a six-zone temperature of 150 ℃, 170 ℃, 185 ℃, 200 ℃, 190 ℃.
Further, the preparation process of the polystyrene cross-linked polylactic acid particles comprises the following steps:
(1) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate, stirring for reaction, distilling under reduced pressure, washing with ethanol, and drying to obtain acrylamide polylactic acid.
(2) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into a toluene solvent, uniformly stirring, then dropwise adding an initiator azodiisobutyronitrile, reacting the reaction system under the protection of nitrogen, distilling under reduced pressure, sequentially washing acetone and ethanol, extracting with acetone by a Soxhlet extractor, and drying to obtain polystyrene cross-linked polylactic acid particles.
Further, the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 4-15% of that of the maleic anhydride grafted polylactic acid; the molar ratio of the N- (3-aminopropyl) methacrylamide hydrochloride to the potassium carbonate is 1:1.2-1.8.
Further, the reaction control temperature in (1) is 35-50 ℃ and the time is 4-12 h.
Further, the dosage of the acrylamide polylactic acid is 20-50% of that of styrene; the dosage of the azodiisobutyronitrile is 0.5-0.8% of that of the styrene; the dosage of the polyvinyl alcohol is 0.2-0.4% of that of the styrene.
Further, the reaction control temperature in (2) is 65-80 ℃ and the reaction time is 18-36 h.
Further, the preparation method of the maleic anhydride grafted polylactic acid comprises the following steps: adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 2-8% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.3-0.5% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion, wherein the reaction temperature is 170-185 ℃ and the time is 4-8 min, thus obtaining the maleic anhydride grafted polylactic acid.
(III) beneficial technical effects
1. The invention utilizes the reaction of the amino group of N- (3-aminopropyl) methacrylamide hydrochloride and the anhydride group of maleic anhydride grafted polylactic acid to obtain acrylamide polylactic acid, thereby introducing polymerizable acrylamide group into the side chain of the polylactic acid, and then carrying out cross-linking polymerization with styrene monomer by an emulsion polymerization method to obtain polystyrene cross-linked polylactic acid particles, thus forming a three-dimensional cross-linked structure of polystyrene and polylactic acid.
2. The polystyrene resin is filled and modified by using polystyrene cross-linked polylactic acid particles, and the cross-linked particles contain a polystyrene structure, so that the cross-linked particles and the polystyrene resin have good compatibility, and can be uniformly dispersed in a resin matrix to have good toughening effect on the polystyrene.
Description of the embodiments
The invention will now be further illustrated by means of specific examples which are given solely as illustrations of the invention and do not limit the scope thereof
Examples
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 2% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.5% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 170 ℃ for 5min to obtain the maleic anhydride grafted polylactic acid.
(2) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate with the molar ratio of 1:1.2, wherein the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 4% of that of the maleic anhydride grafted polylactic acid, stirring for reaction, controlling the temperature to be 50 ℃ for 4 hours, distilling under reduced pressure, washing with ethanol, and drying to obtain the acrylamide-based polylactic acid.
(3) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into a toluene solvent, uniformly stirring, and then dropwise adding an initiator azodiisobutyronitrile, wherein the dosage of the acrylamide polylactic acid is 20% of that of the styrene; the amount of azodiisobutyronitrile is 0.5% of that of styrene; the reaction system with the dosage of 0.2 percent of the polyvinyl alcohol is reacted under the protection of nitrogen, the temperature is controlled to be 80 ℃, the time is 24 h, the reaction system is distilled under reduced pressure, acetone and ethanol are sequentially washed, and then the acetone is used for extraction and drying through a Soxhlet extractor, so that the polystyrene cross-linked polylactic acid particles are obtained.
(4) Adding 95% of polystyrene resin, 5% of polystyrene cross-linked polylactic acid particles and 0.1% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Examples
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 8% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.5% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 180 ℃ for 6 min to obtain the maleic anhydride grafted polylactic acid.
(2) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate with the molar ratio of 1:1.2, wherein the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 15 percent of that of the maleic anhydride grafted polylactic acid, stirring for reaction, controlling the temperature to be 40 ℃, controlling the time to be 4h, carrying out reduced pressure distillation, washing with ethanol, and drying to obtain the acrylamide-based polylactic acid.
(3) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into a toluene solvent, uniformly stirring, and then dropwise adding an initiator azodiisobutyronitrile, wherein the dosage of the acrylamide polylactic acid is 30% of that of the styrene; the amount of azodiisobutyronitrile is 0.6% of that of styrene; the reaction system with the dosage of 0.3 percent of the polyvinyl alcohol is reacted under the protection of nitrogen, the temperature is controlled to be 70 ℃, the time is controlled to be 36 h, the reaction system is distilled under reduced pressure, acetone and ethanol are sequentially washed, then acetone is used for extraction through a Soxhlet extractor, and drying is carried out, so that the polystyrene cross-linked polylactic acid particles are obtained.
(4) Adding 85% of polystyrene resin, 15% of polystyrene cross-linked polylactic acid particles and 0.5% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Examples
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 8% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.5% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 170 ℃ for 8 min to obtain the maleic anhydride grafted polylactic acid.
(2) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate with the molar ratio of 1:1.8, wherein the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 10 percent of that of the maleic anhydride grafted polylactic acid, stirring for reaction, controlling the temperature to be 40 ℃ and the time to be 10 h, carrying out reduced pressure distillation, washing with ethanol, and drying to obtain the acrylamide-based polylactic acid.
(3) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into a toluene solvent, uniformly stirring, and then dropwise adding an initiator azodiisobutyronitrile, wherein the dosage of the acrylamide polylactic acid is 40% of that of the styrene; the amount of azodiisobutyronitrile is 0.6% of that of styrene; the reaction system with the dosage of 0.3 percent of the polyvinyl alcohol is reacted under the protection of nitrogen, the temperature is controlled to be 80 ℃, the time is 18 h, the reaction system is distilled under reduced pressure, acetone and ethanol are sequentially washed, and then the acetone is used for extraction and drying through a Soxhlet extractor, so that the polystyrene cross-linked polylactic acid particles are obtained.
(4) Adding 78% of polystyrene resin, 22% of polystyrene cross-linked polylactic acid particles and 0.1% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Examples
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 2% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.3% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 175 ℃ for 8 min to obtain the maleic anhydride grafted polylactic acid.
(2) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate with the molar ratio of 1:1.2, wherein the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 10 percent of that of the maleic anhydride grafted polylactic acid, stirring for reaction, controlling the temperature to be 50 ℃, controlling the time to be 4h, carrying out reduced pressure distillation, washing with ethanol, and drying to obtain the acrylamide-based polylactic acid.
(3) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into a toluene solvent, uniformly stirring, and then dropwise adding an initiator azodiisobutyronitrile, wherein the dosage of the acrylamide polylactic acid is 50% of that of the styrene; the amount of azodiisobutyronitrile is 0.5% of that of styrene; the reaction system with the dosage of 0.2 percent of the polyvinyl alcohol is reacted under the protection of nitrogen, the temperature is controlled to be 70 ℃, the time is controlled to be 36 h, the reaction system is distilled under reduced pressure, acetone and ethanol are sequentially washed, then acetone is used for extraction through a Soxhlet extractor, and drying is carried out, so that the polystyrene cross-linked polylactic acid particles are obtained.
(4) Adding 70% of polystyrene resin, 30% of polystyrene cross-linked polylactic acid particles and 0.6% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Comparative example 1
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 6% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.4% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 175 ℃ for 8 min to obtain the maleic anhydride grafted polylactic acid.
(2) Adding 95% of polystyrene resin, 5% of maleic anhydride grafted polylactic acid and 0.1% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Comparative example 2
(1) Adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 2% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.4% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion at the temperature of 175 ℃ for 8 min to obtain the maleic anhydride grafted polylactic acid.
(2) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate with the molar ratio of 1:1.2, wherein the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 15 percent of that of the maleic anhydride grafted polylactic acid, stirring for reaction, controlling the temperature to be 35 ℃, controlling the time to be 8 h, carrying out reduced pressure distillation, washing with ethanol, and drying to obtain the acrylamide-based polylactic acid.
(2) Adding 95% of polystyrene resin, 5% of acrylamide polylactic acid and 0.6% of antioxidant 1076 into a high-speed mixer for uniform mixing, and then melting, extruding and granulating in a double-screw extruder, wherein the temperature of six areas of the double-screw extruder is 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃, so as to obtain the degradable polystyrene packaging material.
Table 1: mechanical property test of polystyrene packaging material
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended to facilitate an understanding of the principles of the invention and its core concepts, including the best mode, and to enable any person skilled in the art to practice the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims. The scope of the patent protection is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.

Claims (9)

1. A degradable polystyrene packaging material, characterized in that: the degradable polystyrene packaging material comprises the following raw materials in percentage by weight: 70-95% of polystyrene resin, 5-30% of polystyrene cross-linked polylactic acid particles and 0.1-0.6% of antioxidant.
2. A process for preparing the degradable polystyrene packaging material as claimed in claim 1, characterized in that: the preparation process comprises the following steps: adding polystyrene resin, polystyrene cross-linked polylactic acid particles and an antioxidant into a high-speed mixer, uniformly mixing, and then melting, extruding and granulating in a double-screw extruder to obtain the degradable polystyrene packaging material.
3. The process for preparing the degradable polystyrene packaging material according to claim 2, wherein: the six-zone temperature of the twin-screw extruder was 150 ℃, 170 ℃, 185 ℃, 200 ℃ and 190 ℃.
4. The process for preparing the degradable polystyrene packaging material according to claim 2, wherein: the preparation process of the polystyrene cross-linked polylactic acid particles comprises the following steps:
(1) Dissolving maleic anhydride grafted polylactic acid into chloroform, then adding N- (3-aminopropyl) methacrylamide hydrochloride and potassium carbonate, and stirring for reaction to obtain acrylamide polylactic acid;
(2) Adding styrene, acrylamide polylactic acid and polyvinyl alcohol into toluene solvent, stirring uniformly, then dripping initiator azodiisobutyronitrile, and reacting the reaction system under the protection of nitrogen to obtain polystyrene cross-linked polylactic acid particles.
5. The process for preparing the degradable polystyrene packaging material according to claim 4, wherein the process comprises the following steps: the dosage of the N- (3-aminopropyl) methacrylamide hydrochloride is 4-15% of that of the maleic anhydride grafted polylactic acid; the molar ratio of the N- (3-aminopropyl) methacrylamide hydrochloride to the potassium carbonate is 1:1.2-1.8.
6. The process for preparing the degradable polystyrene packaging material according to claim 4, wherein the process comprises the following steps: (1) The reaction temperature is controlled to be 35-50 ℃ and the time is controlled to be 4-12 h.
7. The process for preparing the degradable polystyrene packaging material according to claim 4, wherein the process comprises the following steps: the consumption of the acrylamide polylactic acid is 20-50% of that of styrene; the dosage of the azodiisobutyronitrile is 0.5-0.8% of that of the styrene; the dosage of the polyvinyl alcohol is 0.2-0.4% of that of the styrene.
8. The process for preparing the degradable polystyrene packaging material according to claim 4, wherein the process comprises the following steps: (2) The reaction temperature is controlled to be 65-80 ℃ and the time is controlled to be 18-36 h.
9. The process for preparing the degradable polystyrene packaging material according to claim 4, wherein the process comprises the following steps: the preparation method of the maleic anhydride grafted polylactic acid comprises the following steps: adding polylactic acid, maleic anhydride and dicumyl peroxide into acetone, wherein the dosage of the maleic anhydride is 2-8% of that of the polylactic acid, the dosage of the dicumyl peroxide is 0.3-0.5% of that of the polylactic acid, uniformly stirring, volatilizing to remove the acetone, and carrying out grafting reaction on the materials in twin-screw extrusion, wherein the reaction temperature is 170-185 ℃ and the time is 4-8 min, thus obtaining the maleic anhydride grafted polylactic acid.
CN202310484405.6A 2023-05-04 2023-05-04 Preparation process of degradable polystyrene packaging material Pending CN116554608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310484405.6A CN116554608A (en) 2023-05-04 2023-05-04 Preparation process of degradable polystyrene packaging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310484405.6A CN116554608A (en) 2023-05-04 2023-05-04 Preparation process of degradable polystyrene packaging material

Publications (1)

Publication Number Publication Date
CN116554608A true CN116554608A (en) 2023-08-08

Family

ID=87495828

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310484405.6A Pending CN116554608A (en) 2023-05-04 2023-05-04 Preparation process of degradable polystyrene packaging material

Country Status (1)

Country Link
CN (1) CN116554608A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1068337A (en) * 1991-07-11 1993-01-27 罗姆和哈斯公司 The method for preparing redispersible core-shell polymer powder
CN1435438A (en) * 2002-09-24 2003-08-13 重庆大学 Diamine modified poly-latic acid, method for preparing same and use thereof
CN102199257A (en) * 2011-03-16 2011-09-28 中国科学院长春应用化学研究所 Preparation method of modified polylactic acid
CN103396660A (en) * 2013-07-18 2013-11-20 杭州旭昇新材料科技有限公司 Preparation method of macromolecular compatibilizer for manufacturing ABS (Acrylonitrile Butadiene Styrene)/PLA (Polylactic Acid) alloy material
KR20140124491A (en) * 2013-04-17 2014-10-27 주식회사 엘지화학 Environment-friendly polylactic acid resin composition
CN104520343A (en) * 2012-08-09 2015-04-15 阿肯马法国公司 Pla polymer composition
CN108192033A (en) * 2018-02-23 2018-06-22 湖南科技大学 A kind of maleic anhydride is directly grafted the preparation method of L- lactide/glycolides/6-caprolactone terpolymer
CN110951176A (en) * 2018-09-26 2020-04-03 合肥杰事杰新材料股份有限公司 Degradable polystyrene resin and preparation method thereof
CN112940192A (en) * 2021-03-17 2021-06-11 广东众和化塑股份公司 Polylactic acid grafted maleic anhydride and preparation method and application thereof
CN114771069A (en) * 2022-03-30 2022-07-22 安徽国风新材料股份有限公司 Antifogging type bidirectional stretching polylactic acid film and preparation method thereof
CN115521528A (en) * 2022-10-25 2022-12-27 漳州市广益塑料有限公司 Environment-friendly wood-plastic composite material and preparation method thereof

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1068337A (en) * 1991-07-11 1993-01-27 罗姆和哈斯公司 The method for preparing redispersible core-shell polymer powder
CN1435438A (en) * 2002-09-24 2003-08-13 重庆大学 Diamine modified poly-latic acid, method for preparing same and use thereof
CN102199257A (en) * 2011-03-16 2011-09-28 中国科学院长春应用化学研究所 Preparation method of modified polylactic acid
CN104520343A (en) * 2012-08-09 2015-04-15 阿肯马法国公司 Pla polymer composition
KR20140124491A (en) * 2013-04-17 2014-10-27 주식회사 엘지화학 Environment-friendly polylactic acid resin composition
CN103396660A (en) * 2013-07-18 2013-11-20 杭州旭昇新材料科技有限公司 Preparation method of macromolecular compatibilizer for manufacturing ABS (Acrylonitrile Butadiene Styrene)/PLA (Polylactic Acid) alloy material
CN108192033A (en) * 2018-02-23 2018-06-22 湖南科技大学 A kind of maleic anhydride is directly grafted the preparation method of L- lactide/glycolides/6-caprolactone terpolymer
CN110951176A (en) * 2018-09-26 2020-04-03 合肥杰事杰新材料股份有限公司 Degradable polystyrene resin and preparation method thereof
CN112940192A (en) * 2021-03-17 2021-06-11 广东众和化塑股份公司 Polylactic acid grafted maleic anhydride and preparation method and application thereof
CN114771069A (en) * 2022-03-30 2022-07-22 安徽国风新材料股份有限公司 Antifogging type bidirectional stretching polylactic acid film and preparation method thereof
CN115521528A (en) * 2022-10-25 2022-12-27 漳州市广益塑料有限公司 Environment-friendly wood-plastic composite material and preparation method thereof

Similar Documents

Publication Publication Date Title
US3055859A (en) Impact-resistant plastic compositions comprising a styrene polymer and a cross-linked acrylic acid ester polymer, and process for preparing same
CN113429750A (en) Composite toughened high-temperature-resistant polylactic acid modified material and preparation method thereof
CA1215489A (en) Thermoplastic acrylic elastomers
US4417026A (en) Thermoplastic polyester moulding compositions having improved toughness
DE69926292T2 (en) Impact modifier for aromatic amorphous polyesters
US20140206820A1 (en) Styrene-based resin blend comprising particles having a tri-layer structure and the preparation method thereof
US20220177620A1 (en) Solvent-free adhesion-promoting chain extender, preparation method therefor, and application thereof
CN113234308A (en) Method for improving compatibility of biodegradable blend by using low molecular weight functional copolymer and blend prepared by method
CN101974136A (en) Method for preparing high-toughness degradable material by using melt-grafting blending method
CN108948689A (en) A kind of reactive extrursion method polydactyl acid-lignin composite material and preparation method
CN114437523A (en) Biodegradable high-temperature-resistant polylactic acid straw and preparation method thereof
CN101747498A (en) Aliphatic polyester copolymer, method for preparing the same and polylactic acid resin composition using thereof
CN114395228A (en) Antibacterial functionalized montmorillonite modified polylactic acid wood-plastic material and preparation method thereof
DE60002569T2 (en) MIXTURES OF POLYAMIDES AND EMULSION POLYMERS
EP1339773B1 (en) Method for producing meltable polyesters
CN110922730A (en) Modified polylactic acid and preparation method thereof
CN112143188B (en) Halogen-free flame-retardant degradable composite material and preparation method thereof
CN112266589B (en) Creep-resistant PBAT material and preparation method and application thereof
CN111944291B (en) Polylactic resin composition and preparation method thereof
CN116554608A (en) Preparation process of degradable polystyrene packaging material
US5910553A (en) Preparation of rubber-modified molding materials by means of groups which are incorporated in the rubber and form free radicals on thermal decomposition
CN108948554B (en) Polyolefin type polyurethane elastomer toughened polystyrene blending material and preparation method thereof
CN112661911B (en) Multi-monomer grafted polylactic acid compatilizer and preparation method and application thereof
DE3688502T2 (en) Clear impact resistant polymer.
CN101717497A (en) Bio-based compatilizer, preparation method 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: 20230808