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Modified polyether sulfone and preparation method and application thereof

A polyethersulfone and modification technology, applied in the field of modified polyethersulfone and its preparation, can solve the problems of poor hydrophilic stability of polyethersulfone hollow fiber membrane, and achieve good biocompatibility and antifouling property , The effect of more chemical properties and stable chemical properties

Active Publication Date: 2019-07-26
SHENZHEN ZHONGXING NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyvinylpyrrolidone is very soluble in water, making it very easy to wash out, resulting in poor hydrophilic stability of polyethersulfone hollow fiber membranes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this example, the slightly hydrolyzed fluorosulfated polyvinylpyrrolidone is bonded to the end group of polyethersulfone through a click chemical reaction based on the exchange of hexavalent sulfur and fluorine to form a modified polyethersulfone, and thus prepare a polyethersulfone hollow Fiber membrane, details are as follows:

[0041] Preparation of slightly hydrolyzed polyvinylpyrrolidone: dissolve 1kg of polyvinylpyrrolidone in 2.5L of pure water, add sodium hydroxide to it until the concentration of sodium hydroxide is 10wt%, then stir and reflux at 100°C for 10 hours, and cool to normal temperature Finally, the reaction solution is filtered, purified with acetone, and the cation exchange resin absorbs small molecular impurities to obtain slightly hydrolyzed polyvinylpyrrolidone. use 1 The spectrogram after the H-NMR test calculates that the hydrolysis rate of the slightly hydrolyzed polyvinylpyrrolidone in this example is 25%.

[0042] Fluorosulfation of sli...

Embodiment 2

[0049] This example adopts the same principle as in Example 1 to prepare modified polyethersulfone and polyethersulfone hollow fiber membranes. The difference is that the specific reaction conditions are changed, as detailed below:

[0050] Preparation of slightly hydrolyzed polyvinylpyrrolidone: Dissolve 1kg of polyvinylpyrrolidone in 2.5L of pure water, then add sodium hydroxide until the concentration of sodium hydroxide is 10wt%, then stir and reflux at 100°C for 8 hours, cool to normal temperature, The reaction solution is filtered, purified with acetone, and the cation exchange resin absorbs small molecular impurities to obtain slightly hydrolyzed polyvinylpyrrolidone. use 1 The spectrogram after the H-NMR test calculates that the hydrolysis rate of the slightly hydrolyzed polyvinylpyrrolidone of this example is 10%.

[0051] Fluorosulfation of slightly hydrolyzed polyvinylpyrrolidone: Dissolve 500g of slightly hydrolyzed polyvinylpyrrolidone in 1L of dichloromethane so...

Embodiment 3

[0056] This example adopts the same principle as in Example 1 to prepare modified polyethersulfone and polyethersulfone hollow fiber membranes. The difference is that the specific reaction conditions are changed, as detailed below:

[0057] Preparation of slightly hydrolyzed polyvinylpyrrolidone: Dissolve 1kg of polyvinylpyrrolidone in 2.5L of pure water, then add sodium hydroxide until the concentration of sodium hydroxide is 10wt%, then stir and reflux at 100°C for 12 hours, cool to normal temperature, The reaction solution is filtered, purified with acetone, and the cation exchange resin absorbs small molecular impurities to obtain slightly hydrolyzed polyvinylpyrrolidone. use 1 The spectrogram after the H-NMR test calculates that the hydrolysis rate of the slightly hydrolyzed polyvinylpyrrolidone in this example is 40%.

[0058] Fluorosulfation of slightly hydrolyzed polyvinylpyrrolidone: Dissolve 500g of slightly hydrolyzed polyvinylpyrrolidone in 1L of dichloromethane s...

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Abstract

The invention discloses modified polyether sulfone and a preparation method and application thereof. Modified polyether sulfone is prepared by grafting slightly-hydrolyzed polyvinylpyrrolidone onto polyether sulfone through click chemical reaction. By grafting slightly-hydrolyzed polyvinylpyrrolidone onto polyether sulfone through click chemical reaction, polyvinylpyrrolidone is less prone to elution, so that a prepared polyether sulfone hollow fiber membrane is more stable in chemical property, heat-resistant, more stable in hydrophilicity and water wettability and high biocompatibility and antifouling performance.

Description

technical field [0001] The application relates to the field of polyethersulfone hollow fibers, in particular to a modified polyethersulfone and its preparation method and application. Background technique [0002] As a thermoplastic polymer material with excellent physical and chemical properties, such as heat resistance, acid resistance, alkali resistance, oxidation resistance, etc., the hollow fiber membrane prepared from it is widely used in the fields of water treatment and blood purification . When used in the field of blood purification, since polyethersulfone is a hydrophobic material, the prepared polyethersulfone hollow fiber membrane needs to be modified by hydrophilicity to enhance its water wettability. [0003] At present, the conventional hydrophilic modification treatment method for polyethersulfone hollow fiber membranes is to introduce polyvinylpyrrolidone into polyethersulfone and blend them to prepare hollow fiber membranes, so as to improve the blood pur...

Claims

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Application Information

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IPC IPC(8): B01D71/78B01D69/12B01D69/08
CPCB01D69/08B01D69/125B01D71/78
Inventor 肖智贤曹志锋丁云海
Owner SHENZHEN ZHONGXING NEW MATERIAL TECH CO LTD
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