Water-soluble ternary chelating polymer molecular brush anionic dye capture agent and its preparation method and application

A technology for chelating polymers and anionic dyes, applied in water pollutants, chemical instruments and methods, waste paint treatment, etc. It can solve the problem of complex heavy metal ions, efficiently capture, and quickly settle.

Active Publication Date: 2020-09-11
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the chemical structure of polyacrylamide is relatively simple, and there are problems such as poor ability to capture dye molecules, slow sedimentation speed, and inability to deal with complexed heavy metal ions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] It is a water-soluble ternary chelating polymer molecular brush anionic dye scavenger, which is prepared by the following steps:

[0020] Step 1 Synthesis of polymer backbone PHEMAA

[0021] Take 2 parts of azobisisobutyronitrile initiator, 200 parts of hydroxyethylacrylamide (HEMAA), and 200 parts of methanol, and carry out polymerization reaction at 60°C for 7 hours under the protection of nitrogen to obtain a degree of polymerization (DP) of 35 Polyhydroxyethylacrylamide (PHEMAA);

[0022] Step 2 Synthesis of cationic polymer side chain precursor polymer PDMC-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0023] Synthesis of cationic polymer side chain PDMC-COOH: Take 4 parts of azodicyanovaleric acid initiator, 150 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 150 parts of water , carry out free radical polymerization at 60°C for 6 hours under the protection of nitrogen, and obtain PDMC-COOH with a degree of polymerization...

Embodiment 2

[0032] It is a water-soluble ternary chelating polymer molecular brush anionic dye scavenger, which is prepared by the following steps:

[0033] Step 1 Synthesis of polymer backbone PHEMAA

[0034] Take 2 parts of ethyl 2-bromoisobutyrate initiator, 2 parts of CuBr and 2 parts of 4,4-linked 2-picoline (BPy), 100 parts of hydroxyethylacrylamide (HEMAA), 50 Parts of methanol were polymerized at 55°C for 12 hours under the protection of nitrogen to obtain polyhydroxyethylacrylamide (PHEMAA) with a degree of polymerization (DP) of 110;

[0035] Step 2 Synthesis of cationic polymer side chain precursor polymer PDMC-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0036] Synthesis of cationic polymer side chain PDMC-COOH: Take 3 parts of azodicyanovaleric acid initiator, 150 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 100 parts of water , carry out free radical polymerization at 70°C for 12 hours under the protection of nitrogen, and obtai...

Embodiment 3

[0045] It is a water-soluble ternary chelating polymer molecular brush anionic dye scavenger, which is prepared by the following steps:

[0046] Step 1 Synthesis of PHEMAA polymer backbone

[0047] Take 1 part of ethyl 2-bromoisobutyrate initiator, 1 part of CuBr and 1 part of 4,4-linked 2-picoline (BPy), 100 parts of hydroxyethylacrylamide (HEMAA), 50 Parts of methanol were polymerized at 70°C for 10 hours under the protection of nitrogen to obtain polyhydroxyethylacrylamide (PHEMAA) with a degree of polymerization (DP) of 195;

[0048] Step 2 Synthesis of cationic polymer side chain precursor polymer PDMC-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0049] Synthesis of cationic polymer side chain PDMC-COOH: Take 1 part of azodicyanovaleric acid initiator, 150 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 100 parts of water , under the protection of nitrogen, free radical polymerization was carried out at 75°C for 18 hours to obta...

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Abstract

The invention relates to a water-soluble binary chelic polymer molecular brush anionic dye catcher as well as a preparation method and application thereof. The water-soluble binary chelic polymer molecular brush anionic dye catcher is characterized by being prepared from polyhydroxyethyl acrylamide as a main chain of a polymer, carboxyl-containing poly(methacryloyloxyethyltrimethyl ammonium chloride) at the tail end of a cationic polymer side chain precursor polymer, carboxyl-containing poly(N-vinylformamide) at the tail end of a functional polymer side chain precursor polymer, water, a catalyst, namely N-hydroxysuccinimide, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide methiodide, potassium hydroxide and ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid and is applied totreatment of dye wastewater and artistic coating wastewater discharged in dye synthesis or dyeing and finishing processes. The water-soluble binary chelic polymer molecular brush anionic dye catcher has the advantages of high catching capacity, high sedimentation speed, simplicity and convenience in operation, low treatment cost, high adaptability and capability of treating complex heavy metal ions, catching anionic dye molecules and complex heavy metal ions within several seconds, realizing rapid growth to form large sedimented particles and achieving the aim of separating a dye.

Description

technical field [0001] The invention belongs to the field of water treatment technology and polymer functional materials, in particular to a ternary chelating polymer molecular brush anionic dye capture agent and its preparation method and application, which is mainly discharged during dye synthesis or dyeing and finishing process The application in dye wastewater and art paint wastewater can realize the simultaneous removal of anionic dye molecules and complexed heavy metal ions in dye wastewater. Background technique [0002] Traditional wastewater treatment methods include physical and chemical methods, chemical coagulation methods, physical adsorption methods, biochemical methods, and electrochemical methods. The chemical coagulation method is to add a coagulant to the dye wastewater to make the pollutants form colloidal particles, and remove the pollutants in the wastewater through coagulation precipitation or air flotation. The coagulation-sedimentation method is the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56C02F1/52C08G81/02C02F101/20C02F101/30C02F103/14
CPCC02F1/5236C02F1/56C02F2101/20C02F2101/308C02F2103/14C08G81/021
Inventor 刘锋彭琦陈燕舞洪丹张浥琨郭志杰唐秋实霍应鹏
Owner 合肥九州龙腾科技成果转化有限公司
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