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Random polymers with framework containing ammonium and phosphonic acid groups, and preparation method thereof

A phosphonic acid-based, polymer technology, used in chemical instruments and methods, reverse osmosis, membrane technology, etc., can solve problems such as less research and difficult polymers

Active Publication Date: 2016-04-27
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difficulty of synthesizing phosphonylated polymers, there are relatively few studies on this type of polymer materials.

Method used

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  • Random polymers with framework containing ammonium and phosphonic acid groups, and preparation method thereof
  • Random polymers with framework containing ammonium and phosphonic acid groups, and preparation method thereof
  • Random polymers with framework containing ammonium and phosphonic acid groups, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Preparation of Polymer (I-a-1)

[0029]

[0030]Under nitrogen atmosphere, 0.33g (1.0mmol) bis (4-fluorophenyl) (3-aminophenyl) phosphine oxide (ABFPPO), 0.44g (1.0mmol) bis (4-fluorophenyl) (3'- Sodium phosphonate phenyl) phosphine oxide (PBFPPO), 5.66g (18.0mmol) bis (4-fluorophenyl) phenyl phosphine oxide (BFPPO), 3.72g (20.0mmol) 4,4'- biphenyl diphenol ( BP) and 3.18g (23.0mmol) of anhydrous potassium carbonate were added to a 100.0mL straight-necked three-necked flask equipped with a water separator, a serpentine condenser, a stirrer and an air guide tube, and then 40.0mL of N,N-di methylacetamide (DMAC) and 20.0 mL of toluene. Raise the temperature to 160°C, reflux at this temperature with water for 12 hours, then drain the toluene through a water separator, rise to 185°C and continue the reaction at this temperature for 3h to obtain a brown viscous solution. Pour it into deionized water to obtain a light brown strip-shaped polymer, filter it, the...

Embodiment 2

[0031] Example 2: Preparation of Polymer (I-a-0)

[0032]

[0033] Take 2 grams of (I-a-1) to make 20% N-methylpyrrolidone solution (NMP) (w / v), heat to reflux, and keep it for 1 hour, lower the temperature to 120°C, then pour it into deionized In water, a fibrous polymer was obtained, then soaked at 60-80°C for 10 hours, repeated 5 times, filtered, dried, and vacuum-dried to obtain 1.9 g of polymer (I-a-0) with a yield of 99%. Intrinsic viscosity: 0.54dL / g.

Embodiment 3-16

[0035] Referring to the test methods of Examples 1 and 2, feeding was carried out according to the molar ratio of ABFPPO: PBFPPO: BFPPO: BP=x:y:z:1, and a series of polymers (I-letter-1) and (I-letter-1) were prepared. -0) (letter=a-h):

[0036]

[0037]

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PUM

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Abstract

The invention discloses random polymers with a framework containing ammonium and phosphonic acid groups, and a preparation method thereof. According to the method, a dihalide monomer containing amino group, a dihalide monomer containing phosphonic acid group, and a diphenol monomer (or dithiol monomer) are mixed according to a certain ratio; under the existence of a medium-strong alkali and toluene, in a high-boiling-point aprotic solvent, the temperature is increased to a certain value, and a reaction is carried out; an obtained viscous material is treated, such that a polymer containing amino group and phosphinic acid group is obtained. The polymers are subjected to acidification and heating treatments, such that high-molecular materials with a framework containing zwitterionic groups is obtained. The novel random polymers show good nano-filtration / reverse osmosis desalination properties, and can be applied in the field of water treatment.

Description

[0001] This patent application is funded by the National Natural Science Foundation of China (project number: 51503151) and Tianjin Science and Technology Support Major Project (contract number: 12ZCDZSF07000). technical field [0002] The invention belongs to the technical field of polymer materials, relates to the field of preparation of membrane materials for nanofiltration and reverse osmosis water treatment, in particular to the preparation of random polyaryl ether (or sulfide) polymers containing ammonium and phosphonate groups The structure and its preparation method are more specifically a water treatment membrane material containing diionic groups and its preparation method. Background technique [0003] In recent years, zwitterionic polymers (polymers containing both cationic and anionic units) have emerged as good antifouling materials. Coating phospholipid-like polymers on ultrafiltration membranes, which contain amphoteric functional group units, can improve mem...

Claims

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Application Information

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IPC IPC(8): C08G65/40B01D71/68B01D61/02
CPCY02A20/131C08G65/4006B01D61/025B01D61/027B01D71/68C08G2650/50
Inventor 张中标汤红英张向涛吴笛张语嫣聂丽平
Owner TIANJIN NORMAL UNIVERSITY
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