Water soluble binary anionic polymeric molecular brush dye capturing settling agent and preparation method and application thereof

An anionic polymer technology, applied in water pollutants, chemical instruments and methods, textile industry wastewater treatment, etc., can solve the problems of single chemical structure of polyacrylamide, inability to deal with heavy metal ions, and poor capture ability of dye molecules. To achieve efficient capture and solve the problem of heavy metal ions, the effect of good electrostatic adsorption capacity

Active Publication Date: 2018-04-17
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 p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] It is a water-soluble dibasic anionic polymer molecular brush dye capturing and settling agent, prepared by the following steps:

[0019] Step 1: Synthesize PHEMAA polymer backbone

[0020] Take 5 parts of azobisisobutyronitrile initiator, 100 parts of hydroxyethyl acrylamide (HEMAA), 100 parts of methanol, and carry out the polymerization reaction at 60°C for 2 hours under the protection of nitrogen to obtain a degree of polymerization (DP) of 25 Polyhydroxyethyl acrylamide (PHEMAA);

[0021] Step 2 Anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0022] Synthesis of anionic polymer side chain precursor polymer PtBMA-COOH: Take 4 parts of azodicyanovaleric acid initiator, 100 parts of tert-butyl methacrylate (tBMA), 200 parts of toluene, in nitrogen Free radical polymerization was carried out at 80°C under protection for 1 hour to obtain PtBMA-COOH with a degree of polymerization (DP) of 40;

[0023] The sy...

Embodiment 2

[0030] A water-soluble binary anionic polymer molecular brush dye capturing settling agent is prepared by the following steps:

[0031] Step 1: Synthesize PHEMAA polymer backbone

[0032] Take 2 parts of ethyl 2-bromoisobutyrate initiator, 2 parts of CuBr and 2 parts of 4,4-bipyridine (BPy), 100 parts of hydroxyethyl acrylamide (HEMAA), 40 parts of methanol, in nitrogen Perform polymerization at 65°C under protection for 12 hours to obtain polyhydroxyethyl acrylamide (PHEMAA) with a degree of polymerization (DP) of 110;

[0033] Step 2: Anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0034] Synthesis of anionic polymer side chain precursor polymer PtBMA-COOH: Take 2 parts of azodicyanovaleric acid initiator, 100 parts of tert-butyl methacrylate (tBMA), 20 parts of toluene, in nitrogen Carry out free radical polymerization at 75°C for 12 hours under protection to obtain PtBMA-COOH with a degree of polymerization (...

Embodiment 3

[0042] It is a water-soluble dibasic anionic polymer molecular brush dye capturing and settling agent, which is prepared by the following steps:

[0043] Step 1: Synthesize PHEMAA polymer backbone

[0044] Take 1 part of ethyl 2-bromoisobutyrate initiator, 1 part of CuBr, 1 part of 4,4-bipyridine (BPy), 400 parts of hydroxyethyl acrylamide (HEMAA), 20 parts of methanol, Perform polymerization at 70°C for 15 hours under the protection of nitrogen to obtain polyhydroxyethyl acrylamide (PHEMAA) with a degree of polymerization (DP) of 450;

[0045] Step 2: Anionic polymer side chain precursor polymer PtBMA-COOH and functional polymer side chain precursor polymer PNVF-COOH

[0046] Synthesis of anionic polymer side chain precursor polymer PtBMA-COOH: Take 1 part of azodicyanovaleric acid initiator, 400 parts of tert-butyl methacrylate (tBMA), 100 parts of toluene, in nitrogen Carry out radical polymerization at 79°C under protection for 13 hours to obtain PtBMA-COOH with a degree of polym...

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Abstract

The invention relates to a water soluble binary anionic polymeric molecular brush dye capturing settling agent and a preparation method and an application thereof. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is characterized by being prepared from a polymeric main chain polyethoxy acrylamide, carboxyl-containing tert-butyl polymethacrylate at the tail end of an anionic high molecular side chain precursor polymer, carboxyl-containing N-vinyl formamide at the tail end of a functional high molecular side chain precursor polymer, a dimethylformamide solvent and catalysts: N-hydroxy succinimide (NHS), 1-ethyl-3-(3-dimethylamino propyl) carbodiimide iodomethane, potassium hydroxide and carbon disulfide. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is used for treating dye waste water and art dye wastewater discharged in a dye synthesizing or dyeing and finishing process. The water soluble binary anionic polymeric molecular brush dye capturing settling agent is high in capturing ability and high in settling speed, can treat heavy metal ions, can capture cationic dye molecules and heavy metal ions withinseveral seconds, and quickly generates grown settling particles, so as to achieve the aim of quickly separating the dye. The water soluble binary anionic polymeric molecular brush dye capturing settling agent has the advantages of being simple to operate, low in treatment cost, high in adaptability and 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 two-water-soluble two-component anionic polymer molecular brush dye capturing and settling agent and its preparation method and application. It is mainly used in dye synthesis or dyeing and finishing processes. Used in the discharged dye wastewater and artistic coating wastewater. Background technique [0002] In recent years, my country’s annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounted for 51%, and dye wastewater accounted for 35% of the total industrial wastewater discharge, and it is also increasing at a rate of 1% year by year. Dye wastewater mainly comes from dye synthesis and dye use enterprises, and consists of dyes and auxiliaries discharged during synthesis or dyeing and finishing. With the rapid development of the printing and dyeing industry, my country is a major cou...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F103/30C02F101/20
CPCC02F1/56C02F2101/20C02F2101/308C02F2103/30
Inventor 陈燕舞刘锋霍应鹏洪丹张浥琨郭志杰唐秋实彭琦
Owner SHUNDE POLYTECHNIC
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