CN115093585A - Waste plastic-based super-crosslinked polymer prepared from waste polystyrene plastic, and preparation method and application thereof - Google Patents

Waste plastic-based super-crosslinked polymer prepared from waste polystyrene plastic, and preparation method and application thereof Download PDF

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CN115093585A
CN115093585A CN202210703061.9A CN202210703061A CN115093585A CN 115093585 A CN115093585 A CN 115093585A CN 202210703061 A CN202210703061 A CN 202210703061A CN 115093585 A CN115093585 A CN 115093585A
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waste
plastic
polystyrene
reaction
ethanol
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卢勇
侯侠
吴海霞
魏邦婧
丁亚斌
姜博晓
魏斌
王璐
王文瑞
麻俊伟
徐成
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Lanzhou Petrochemical College of Vocational Technology
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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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • 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
    • C08F8/34—Introducing sulfur atoms or sulfur-containing groups
    • C08F8/36—Sulfonation; Sulfation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/308—Dyes; Colorants; Fluorescent agents
    • 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
    • C08J2325/00—Characterised by the use 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; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • 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
    • C08K5/02—Halogenated hydrocarbons
    • 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
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Organic Chemistry (AREA)
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Abstract

The invention relates to preparation of waste polystyrene plastic-based adsorption materials, in particular to a waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastics, a preparation method and application thereof. The method comprises the steps of slightly sulfonating waste polystyrene by using a sulfonating agent, introducing sulfonic groups into benzene rings, extracting for multiple times, drying to obtain viscous liquid, dissolving the viscous liquid by using an organic solvent, sequentially adding a cross-linking agent and a catalyst under the protection of nitrogen, adding a mixed solution of water and ethanol after the reaction is finished to terminate the reaction, filtering, washing a filter cake by using ethanol for multiple times, and performing Soxhlet extraction on the filter cake by using acetone until a supernatant is colorless to obtain the adsorbing material with a certain porosity. The invention is a waste plastic based super cross-linked polymer with mild preparation condition, high surface activity and wide application field.

Description

Waste plastic based hypercrosslinked polymer prepared from waste polystyrene plastic, preparation method and application
Technical Field
The invention relates to preparation of a waste polystyrene plastic-based adsorption material, in particular to a waste plastic-based super cross-linked polymer prepared from waste polystyrene plastic, a preparation method and application.
Background
The recycling of waste plastics has become an urgent problem to be solved. Waste plastics are widely available and generate waste materials during polymerization, processing and application. Polystyrene is a general plastic, brings serious pollution problems while being widely applied, and has important practical significance in recycling and comprehensive utilization of waste polystyrene plastic. The waste polystyrene plastic can be recycled by physical and chemical recovery. Physical recycling is a method of recycling plastics by recycling them through mechanical transformation. The chemical recycling is mainly used for preparing chemical raw materials, coatings, adhesives, adsorbing materials, water reducing agents, flame retardants, flocculants, moisture-proof agents and the like by cracking. The polystyrene-based adsorption material reported in the literature at present is mainly used for the research of volatile gas adsorption and sulfide adsorption by crosslinking porous polystyrene under the catalysis of Lewis acid. Compared with other chemical recycling, the preparation process is simple, and a large amount of organic solvent involved in the preparation process can be recycled. The invention recycles waste polystyrene plastics, and is beneficial to environmental protection and economic value creation.
Patent CN 109675534A discloses a method for preparing a pore-size-adjustable waste plastic-based hypercrosslinked polymer, which comprises mixing polystyrene foamed plastic with 1, 2-dichloroethane and methylal, adding anhydrous ferric chloride for catalysis after full dissolution to perform one-step crosslinking reaction or pre-crosslinking with acetic acid and methylal and then performing secondary crosslinking, and purifying to obtain the hypercrosslinked polymer with adjustable pore size and high specific surface area for adsorption removal of tetracycline in water.
Patent CN101691425A discloses a method for preparing adsorptive resin material from waste polystyrene, which prepares waste Polystyrene (PS) foam plastics into globular adsorptive resin material by suspension copolymerization. The preparation method comprises the steps of firstly dissolving a certain amount of waste Polystyrene (PS) by using a styrene monomer (St), and finally carrying out polymerization crosslinking reaction at 80-90 ℃ by using divinylbenzene as a crosslinking agent, benzoyl peroxide as an initiator, n-heptane as a pore-forming agent and polyvinyl alcohol as a stabilizer to obtain the polystyrene crosslinked adsorption resin material.
The defects of the prior art are as follows: in the first invention, methylal is selected as a cross-linking agent in the preparation process, ferric chloride is used as a catalyst, and the cross-linking agent methylal with certain toxicity is introduced; the second invention method is to obtain the adsorption resin material through polymerization crosslinking reaction, uses more reagents, and has a reaction mechanism different from that of the invention.
Disclosure of Invention
The invention aims to provide a waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastics, a preparation method and application thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a waste plastic based hypercrosslinked polymer prepared from waste polystyrene plastic has a chemical formula:
Figure BDA0003705080710000021
a method for preparing a hypercrosslinked polymer prepared by waste polystyrene plastics comprises the following steps:
s1, taking 20ml of dichloroethane as a solvent in a reactor, heating to 50-70 ℃, adding polystyrene fragments into the reactor, stirring for dissolving, finally slowly dripping a sulfonating agent, finally extracting with water, adding the sulfonating agent, collecting a lower organic phase, performing rotary evaporation, and performing vacuum drying to obtain sulfonated polystyrene;
s2, placing the sulfonated polystyrene obtained in the step S1 in another reactor, adding dichloroethane into the reactor, dissolving, sequentially adding a cross-linking agent and a catalyst, heating to 80 ℃, and carrying out reflux reaction for 6-12 hours;
s3, after the reaction is finished, slowly adding a mixed solution of water and ethanol to stop the reaction, wherein the mass ratio of water to ethanol is 4:1, filtering, washing the filter cake with ethanol and hydrochloric acid solution for multiple times, and performing Soxhlet extraction on the filter cake with acetone until the supernatant is colorless to obtain the waste plastic-based hypercrosslinked polymer;
the preparation reaction formula of the waste plastic-based hypercrosslinked polymer is as follows:
Figure BDA0003705080710000031
further, in the step S1, the sulfonation reaction formula of the sulfonated polystyrene is:
Figure BDA0003705080710000032
further, in the step S1, the waste polystyrene fragments are 50 meshes, the mass ratio of the adding amount of the sulfonating agent to the waste polystyrene plastic is 1-5: 1, the stirring speed is controlled at 200-400 rpm/min, and the constant temperature reaction is carried out for 3-5 hours.
Further, in the step S1, the sulfonating agent is one or a mixture of concentrated sulfuric acid, fuming sulfuric acid, chlorosulfonic acid and acetyl sulfonate, the sulfonating agent is added into the reactor dropwise in a liquid form, and the mass ratio of the added amount of the sulfonating agent to the waste polystyrene plastic is 1-5: 1, the sulfonation degree is 4.5-25%.
Further, dichloroethane obtained by rotary evaporation in the step S1 and ethanol and acetone used for cleaning in the step S3 are recyclable, a two-phase mixed solution of dichloroethane, water and ethanol is collected after the crosslinking reaction is finished, a catalyst and ethanol are contained in the aqueous phase, the organic phase is mainly dichloroethane, a separating funnel is used for layering, the upper layer is used for obtaining the aqueous phase, and the lower layer is used for obtaining the organic phase; the material is washed and separately collected by organic solvents of ethanol and acetone, the ethanol and the acetone are mainly inorganic catalysts, and the materials can be separated by simple distillation.
Further, in the step S2, the mass ratio of the added amount of the catalyst to the sulfonated polystyrene is 1-3: 1.
further, in the step S2, the catalyst is a lewis acid catalyst, and the lewis acid catalyst is one of anhydrous calcium chloride, anhydrous aluminum chloride, and anhydrous ferric chloride.
Further, in step S2, the crosslinking agent is one or a mixture of two of 1, 2-dichloroethane, 1, 4-p-dichlorobenzyl, p-dichloromethyl biphenyl, dichloromethyl anthracene, bischloromethyl-1, 4-diphenylbutane, trichloromethyl-mesitylene, bis (bromomethyl) or tris (bromomethyl) aromatic compounds (such as 2, 5-dibromop-xylene and tribromomethylbenzene), diiodo or triiodoalkane, carbon tetrachloride, and chloromethyl methyl ether.
Preferably, the cross-linking agent is 1, 2-dichloroethane, and when 1, 2-dichloroethane is selected, the 1, 2-dichloroethane is the solvent.
Further, the adsorption capacity of the waste plastic-based hypercrosslinked polymer to basic fuchsinThe amount is 815.36-1267.58mg g -1 。
Furthermore, sulfonic groups in the molecular structure of the polystyrene-based adsorption material have strong electrostatic interaction with cations or metal ions, and the pore capture capacity of micropores and mesopores of the material can be used for removing organic cationic dyes or metal ions with different sizes in a water body.
In conclusion, due to the adoption of the technical scheme, the beneficial technical effects of the invention are as follows:
the novel acrylic acid wastewater treatment device has the advantages of environmental protection, low carbon, energy conservation, high efficiency, no material waste and the like, the recovery rate of acetic acid and acrylic acid in wastewater reaches more than 98 percent, calcium acetate can be recovered from the wastewater of the acrylic acid device, a high-grade zirconia ceramic coating precursor can be obtained, and the purified wastewater can be directly subjected to biochemical treatment.
The adsorbing material prepared from the waste polystyrene plastics is prepared from the waste polystyrene plastics collected in a laboratory. Not only recycles the waste polystyrene plastics, but also is beneficial to environmental protection and economy creation, and can be used for adsorbing cationic dyes or metal ions in water and wastewater.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
(1) 20ml of dichloroethane solvent is taken to be put in a reactor and heated to 60 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 6g of sulfonating agent, stirring at the speed of 300rpm/min, reacting at constant temperature for 4 hours, extracting with water after the reaction is finished, adding concentrated sulfuric acid serving as the sulfonating agent, collecting a lower layer 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) 1g of sulfonated polystyrene is put into another reactor, 30ml of 1, 2-dichloroethane is added, 2g of catalyst anhydrous calcium chloride is sequentially added after dissolution, the temperature is raised to 80 ℃, and reflux reaction is carried out for 10 hours;
(4) after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake with ethanol and hydrochloric acid solution for multiple times, performing Soxhlet extraction on the filter cake with acetone for 12 hours, and drying to obtain solid powder. The solvents used, 1, 2-dichloroethane, ethanol and acetone, were collected. The adsorption was found to be 1165 mg/g.
Example 2
(1) 20ml of dichloroethane solvent is taken to be put in a reactor and heated to 50 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 7g of sulfonating agent, stirring at the speed of 300rpm/min, reacting at constant temperature for 4 hours, extracting with water after the reaction is finished, adding the sulfonating agent concentrated sulfuric acid, collecting a lower layer of 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) placing 1g of sulfonated polystyrene in another reactor, adding 30ml of 1, 2-dichloroethane, dissolving, sequentially adding 3g of catalyst anhydrous calcium chloride, heating to 80 ℃, and carrying out reflux reaction for 10 hours;
(4) and after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake for multiple times by using ethanol and hydrochloric acid solution, performing Soxhlet extraction on the filter cake for 12 hours by using acetone, and drying the solid powder. Collecting the used solvents of 1, 2-dichloroethane, ethanol and acetone. The measured adsorption capacity was 1087mg/g
Example 3
(1) 20ml of dichloroethane as a solvent is taken in a reactor and heated to 50 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 5g of sulfonating agent, stirring at the speed of 400rpm/min, reacting at constant temperature for 4 hours, extracting with water after the reaction is finished, adding concentrated sulfuric acid serving as the sulfonating agent, collecting a lower layer 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) 1g of sulfonated polystyrene is put into another reactor, 30ml of 1, 2-dichloroethane is added, 2g of catalyst anhydrous calcium chloride is sequentially added after dissolution, the temperature is raised to 80 ℃, and reflux reaction is carried out for 10 hours;
(4) and after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake for multiple times by using ethanol and hydrochloric acid solution, performing Soxhlet extraction on the filter cake for 12 hours by using acetone, and drying the solid powder. The solvents used, 1, 2-dichloroethane, ethanol and acetone, were collected. The adsorption quantity was found to be 946 mg/g.
Example 4
(1) 20ml of dichloroethane solvent is taken to be put in a reactor and heated to 50 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 4g of sulfonating agent, stirring at the speed of 400rpm/min, reacting at constant temperature for 5 hours, extracting with water after the reaction is finished, adding concentrated sulfuric acid serving as the sulfonating agent, collecting a lower layer 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) 1g of sulfonated polystyrene is placed in another reactor, 30ml of 1, 2-dichloroethane is added, after dissolution, 1g of catalyst anhydrous calcium chloride is sequentially added, the temperature is raised to 80 ℃, and reflux reaction is carried out for 12 hours;
(4) after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake with ethanol and hydrochloric acid solution for multiple times, performing Soxhlet extraction on the filter cake with acetone for 12 hours, and drying to obtain solid powder. Collecting the used solvents of 1, 2-dichloroethane, ethanol and acetone. The adsorbed amount was found to be 897 mg/g.
Example 5
(1) 20ml of dichloroethane solvent is taken to be put in a reactor and heated to 70 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 1g of sulfonating agent, stirring at the speed of 400rpm/min, reacting at constant temperature for 5 hours, extracting with water after the reaction is finished, adding concentrated sulfuric acid serving as the sulfonating agent, collecting a lower layer 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) 1g of sulfonated polystyrene is put into another reactor, 30ml of 1, 2-dichloroethane is added, 2g of catalyst anhydrous calcium chloride is sequentially added after dissolution, the temperature is raised to 80 ℃, and reflux reaction is carried out for 12 hours;
(4) and after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake for multiple times by using ethanol and hydrochloric acid solution, performing Soxhlet extraction on the filter cake for 12 hours by using acetone, and drying the solid powder. The solvents used, 1, 2-dichloroethane, ethanol and acetone, were collected. The adsorption was found to be 1034 mg/g.
Example 6
(1) 20ml of dichloroethane solvent is taken to be put in a reactor and heated to 50 ℃;
(2) adding 3g of waste polystyrene fragments which are crushed to 50 meshes in advance into a reactor, stirring to dissolve the waste polystyrene fragments, slowly dropwise adding 15g of sulfonating agent, stirring at the speed of 400rpm/min, reacting at constant temperature for 3 hours, extracting with water after the reaction is finished, adding sulfonating agent concentrated sulfuric acid, collecting a lower layer of 1, 2-dichloroethane phase, and performing rotary evaporation and drying to obtain sulfonated polystyrene;
(3) 1g of sulfonated polystyrene is put into another reactor, 30ml of 1, 2-dichloroethane is added, after dissolution, 1g of catalyst anhydrous calcium chloride is sequentially added, the temperature is raised to 80 ℃, and reflux reaction is carried out for 10 hours;
(4) and after the reaction is finished, slowly adding 50ml of mixed solution of water and ethanol to stop the reaction, filtering, washing the filter cake for multiple times by using ethanol and hydrochloric acid solution, performing Soxhlet extraction on the filter cake for 12 hours by using acetone, and drying the solid powder. The solvents used, 1, 2-dichloroethane, ethanol and acetone, were collected. The adsorption amount was found to be 817 mg/g.
In the examples of the present invention, the degree of sulfonation was measured by the following method:
an accurate amount of the product (accurate to 0.1mg) was weighed into an Erlenmeyer flask, dissolved by adding 20mL of chloroform, and titrated with phenolphthalein as an indicator and 0.8mol/L NaOH/methanol solution.
The titration was carried out in parallel three times, and the sulfonation degree was calculated using the formula (1).
Figure BDA0003705080710000081
In the formula: n and V are respectively the concentration and volume of the methanol solution; w is the mass of the sulfonated polystyrene; 104 and 81 are the relative molecular masses of the styrene repeat units and the sulfonic acid groups, respectively.
Measuring the adsorption performance by an ultraviolet wind-solar photometer: 5mg of the treated crosslinked powder was placed in a centrifuge tube, 10mL of aqueous dye solutions of different concentrations were added, and adsorption experiments were performed under different conditions (adsorption time, adsorption temperature). And the supernatant was collected and tested for UV-Vis absorbance.
The adsorption amount was calculated by the formula (2).
Figure BDA0003705080710000082
In the formula: v (L) is the volume of the solution; c. C 0 And c e (mg/L) is the concentration of the dye solution at the initial reaction time and at the equilibrium reaction time, respectively; m (g) is the mass of adsorbent; qe (mg/g) is the amount of adsorption at equilibrium.
The above-described preferred embodiments of the invention are not intended to be limiting, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the invention are intended to be included within the scope of the invention.

Claims (10)

1. A chemical formula of a waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastics is as follows:
Figure FDA0003705080700000011
2. a method for preparing waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastic is characterized by comprising the following steps:
s1, taking 20ml of dichloroethane as a solvent in a reactor, heating to 50-70 ℃, adding polystyrene fragments into the reactor, stirring for dissolving, finally slowly dropwise adding a sulfonating agent, finally extracting with water, adding the sulfonating agent, collecting a lower organic phase, performing rotary evaporation, and performing vacuum drying to obtain sulfonated polystyrene;
s2, placing the sulfonated polystyrene obtained in the step S1 in another reactor, adding dichloroethane into the reactor, dissolving, sequentially adding a cross-linking agent and a catalyst, heating to 80 ℃, and carrying out reflux reaction for 6-12 hours;
s3, after the reaction is finished, slowly adding a mixed solution of water and ethanol to stop the reaction, wherein the mass ratio of the water to the ethanol is 4:1, filtering, washing the filter cake with ethanol and hydrochloric acid solution for multiple times, and performing Soxhlet extraction on the filter cake with acetone until the supernatant is colorless to obtain the waste plastic-based hypercrosslinked polymer;
the preparation reaction formula of the waste plastic-based hypercrosslinked polymer is as follows:
Figure FDA0003705080700000012
3. the method of preparing waste plastic-based hypercrosslinked polymer made of waste polystyrene plastic according to claim 2, wherein in step S1, the sulfonation reaction formula of sulfonated polystyrene is:
Figure FDA0003705080700000021
4. the method for preparing waste plastic-based hypercrosslinked polymer from waste polystyrene plastic as claimed in claim 2, wherein in step S1, waste polystyrene fragments are 50 mesh, mass ratio of adding amount of sulfonating agent to waste polystyrene plastic is 1-5: 1, stirring speed is controlled at 200-400 rpm/min, and reaction is carried out at constant temperature for 3-5 h.
5. The method for preparing waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastic according to claim 2, wherein in step S1, the sulfonating agent is one or more of concentrated sulfuric acid, fuming sulfuric acid, chlorosulfonic acid and acetyl sulfonate, the sulfonating agent is added dropwise into the reactor in liquid form, and the mass ratio of the added amount of the sulfonating agent to the waste polystyrene plastic is 1-5: 1, the sulfonation degree is 4.5-25%.
6. The method for preparing the hypercrosslinked polymer made of waste polystyrene plastic as claimed in claim 2, wherein dichloroethane obtained by rotary evaporation in step S1 and ethanol and acetone for washing in step S3 are recycled.
7. The method for preparing waste plastic based hypercrosslinked polymer prepared from waste polystyrene plastic according to claim 2, wherein in step S2, the mass ratio of the added amount of catalyst to the sulfonated polystyrene is 1-3: 1, the catalyst is Lewis acid catalyst, and the Lewis acid catalyst is selected from one of anhydrous calcium chloride, anhydrous aluminum chloride and anhydrous ferric chloride.
8. The method of claim 2, wherein in step S2, the cross-linking agent is one or a mixture of 1, 2-dichloroethane, 1, 4-p-dichlorobenzyl, p-dichloromethyl biphenyl, dichloromethyl anthracene, bischloromethyl-1, 4-diphenylbutane, trichloromethyl-mesitylene, bis (bromomethyl) or tris (bromomethyl) aromatic compound, diiodo or triiodoalkane, carbon tetrachloride, chloromethyl methyl ether.
9. The method of claim 2, wherein the adsorption capacity of the waste plastic-based hypercrosslinked polymer to basic fuchsin is 815.36-1267.58 mg-g -1 。
10. The use of the waste plastic-based hypercrosslinked polymer prepared from waste polystyrene plastic as claimed in claim 1 for removing organic cationic dyes or metal ions with different sizes in water.
CN202210703061.9A 2022-06-21 2022-06-21 Waste plastic-based super-crosslinked polymer prepared from waste polystyrene plastic, and preparation method and application thereof Pending CN115093585A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117303533A (en) * 2023-11-17 2023-12-29 重庆金瑞图环保科技有限公司 Novel efficient sludge dewatering flocculant formula and application thereof in sewage treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117303533A (en) * 2023-11-17 2023-12-29 重庆金瑞图环保科技有限公司 Novel efficient sludge dewatering flocculant formula and application thereof in sewage treatment

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