Water-soluble ternary chelating polymer molecular brush dye trapping agent as well as preparation method and application thereof

A technology of chelating polymer and dye scavenger, applied in water pollutants, chemical instruments and methods, water/sewage treatment, etc. Problems such as poor capture ability, to achieve the effect of solving the problem of complex heavy metal ions, efficient capture, and rapid sedimentation

Active Publication Date: 2018-03-23
SHUNDE POLYTECHNIC
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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 abi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] It is a water-soluble ternary chelating polymer molecular brush dye catcher, which is prepared by the following steps:

[0022] Step 1 Synthesis of PHEMAA polymer backbone

[0023]Take 1 part of azobisisobutyronitrile initiator, 100 parts of hydroxyethylacrylamide (HEMAA), and 200 parts of methanol, and carry out polymerization reaction at 70° C. under nitrogen protection for 2 hours to obtain a degree of polymerization (DP) of 45 Polyhydroxyethylacrylamide (PHEMAA);

[0024] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0025] Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 100 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 200 parts of water , carry out free radical polymerization at 65° C. for 4 hours under the protection of nitrogen to obtain PDMC-COOH with a deg...

Embodiment 2

[0035] It is a water-soluble ternary chelating polymer molecular brush dye catcher, which is prepared by the following steps:

[0036] Step 1 Synthesis of polymer backbone PHEMAA

[0037] Get 2 parts of 2-parts of ethyl bromoisobutyrate initiator 2 parts of CuBr and 2 parts of 4,4-linked 2-picoline (BPy), 100 parts of hydroxyethylacrylamide (HEMAA), 100 parts of Methanol was polymerized at 60° C. for 2 hours under nitrogen protection to obtain polyhydroxyethylacrylamide (PHEMAA) with a degree of polymerization (DP) of 120;

[0038] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0039] Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 200 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 200 parts of water , under the protection of nitrogen, carry out radical polymerization reacti...

Embodiment 3

[0049] It is a water-soluble ternary chelating polymer molecular brush dye catcher, which is prepared by the following steps:

[0050] Step 1 Synthesis of polymer backbone PHEMAA

[0051]Get 2 parts of ethyl bromoisobutyrate initiator, 2 parts of CuBr and 2 parts of 4,4-linked 2-picoline (BPy), 100 parts of hydroxyethylacrylamide (HEMAA), 100 parts Parts of methanol were polymerized for 7 hours at 70°C under nitrogen protection to obtain polyhydroxyethylacrylamide (PHEMAA) with a degree of polymerization (DP) of 190;

[0052] Step 2 Synthesis of cationic polymer side chain PDMC-COOH, anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0053] Synthesis of cationic polymer side chain PDMC-COOH: get 2 parts of azodicyanovaleric acid initiator, 200 parts of methacryloyloxyethyltrimethylammonium chloride (DMC) and 200 parts of water , under the protection of nitrogen, carry out free radical polymerization at 60°C...

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Abstract

The invention relates to a water-soluble ternary chelating polymer molecular brush dye trapping agent as well as a preparation method and an application thereof. The water-soluble ternary chelating polymer molecular brush dye trapping agent is characterized by being prepared from polymeric main chain PHEAA (polyhydroxyethyl acrylamide), cationic polymeric side chain PDMC-COOH (poly(methacryloyloxyethyl trimethyl ammonium chloride) containing carboxyl groups at the tail end), anionic polymeric side chain precursor PtBMA-COOH (poly(tert-butylmethacrylate) containing carboxyl at the tail end), functional polymer side chain precursor polymer PNVF-COOH (poly-N-vinylformamide containing carboxyl groups at the tail end), a DMF (dimethylformamide) solvent, a catalyst, namely, NHS (N-hydoxysuccinimide), EDC.CH3I (1-ethyl-3-(3-dimethylaminopropyl)carbodiimide methiodide), potassium hydroxide and EGTAD (ethylene glycol tetraacetic acid dianhydride), and the water-soluble ternary chelating polymer molecular brush dye trapping agent is used for treating dye wastewater and artistic coating wastewater drained in the dye synthesis or dyeing and finishing process. The water-soluble ternary chelating polymer molecular brush dye trapping agent the advantages of being high in trapping capability and settling speed, capable of treating complexing heavy metal ions, trapping dye molecules and complexing heavy metal ions in a few seconds and growing into large settling particles rapidly to achieve the purpose of rapid dye separation, simple to operate, low in treatment cost, high in adaptabilityand the like.

Description

technical field [0001] The invention belongs to the field of water treatment technology and polymer functional materials, and specifically relates to a ternary chelating polymer molecular brush dye catcher and its preparation method and application, which mainly discharges dyes during dye synthesis or dyeing and finishing processes The application in wastewater and art paint wastewater can simultaneously remove cationic dye molecules, anionic dyes and complexed heavy metal ions in dye wastewater. Background technique [0002] In recent years, my country's annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounts for 51%, while dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and is composed of dyes and auxiliaries discharged during the synthesis or dyeing and finishing process. With t...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F120/58C08F120/34C08F120/18C08F126/02C02F1/56C02F1/52C02F101/30
CPCC02F1/5236C02F1/56C02F2101/308C08F120/18C08F120/34C08F120/58C08F126/02C08G81/021
Inventor 刘锋彭琦陈燕舞洪丹张浥琨郭志杰唐秋实霍应鹏
Owner SHUNDE POLYTECHNIC
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