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Preparation method of hydrophilic modified crosslinked polystyrene

A technology of cross-linked polystyrene and hydrophilic modification, applied in the direction of coating, etc., can solve the problems of poor hydrophilicity, and achieve the effect of low price, simple preparation method, and good environment friendliness

Active Publication Date: 2019-05-21
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose a method for preparing a hydrophilic modified cross-linked polystyrene to solve the problem of poor hydrophilicity of the existing cross-linked polystyrene

Method used

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  • Preparation method of hydrophilic modified crosslinked polystyrene
  • Preparation method of hydrophilic modified crosslinked polystyrene
  • Preparation method of hydrophilic modified crosslinked polystyrene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of preparation method of the cross-linked polystyrene of hydrophilic modification, specifically comprises the following steps:

[0024] Add diethanolamine to cross-linked polystyrene, heat at 80°C for 60 minutes, after the reaction is complete, pour the obtained solid-liquid mixture into a Buchner funnel for suction filtration, and then wash the solid obtained by suction filtration with ethanol , baked at 80°C for 12 hours, and after it was fully dried, a hydrophilic modified cross-linked polystyrene was obtained, wherein the mass ratio of diethanolamine to cross-linked polystyrene was 100.

[0025] The contact angle of the hydrophilic modified cross-linked polystyrene obtained in this embodiment is tested, and it is compared with the cross-linked polystyrene without hydrophilic modification. The test results are as follows: figure 1 and image 3 shown.

[0026] Depend on figure 1 and image 3 It is known that the contact angle of the hydrophilic modified cro...

Embodiment 2

[0033] The difference between this embodiment and embodiment 1 is that the organic base is triethanolamine.

[0034] The contact angle of the hydrophilic modified cross-linked polystyrene obtained in this embodiment is tested, and it is compared with the cross-linked polystyrene without hydrophilic modification. The test results are as follows: figure 2 and image 3 shown.

[0035] Depend on figure 2 and image 3 It is known that the contact angle of the hydrophilic modified cross-linked polystyrene obtained in the present embodiment is 107.0°, and the contact angle of the cross-linked polystyrene without hydrophilic modification is 143.8°, indicating that the present embodiment obtains The hydrophilicity of the cross-linked polystyrene with hydrophilic modification is significantly better than that of cross-linked polystyrene without hydrophilic modification.

[0036] 1000ppm p-nitrophenol was used to simulate phenol-containing wastewater, and the adsorption performance...

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Abstract

The invention provides a preparation method of hydrophilic modified crosslinked polystyrene. The method comprises the following steps: adding organic alkali to crosslinked polystyrene; heating; performing suction filtration on the obtained solid-liquid mixture after reaction ends completely; washing the solid obtained through suction filtration by using ethanol alcohol; drying to obtain the hydrophilic modified crosslinked polystyrene. According to the method, the organic alkali is added to the crosslinked polystyrene, so that the crosslinked polystyrene can be subjected to quaternization, andquaternary ammonium salt is obtained from benzyl chloride in the crosslinked polystyrene; the quaternary ammonium salt is in an ion form and is high in hydrophilic performance, and thus the hydrophilic modified crosslinked polystyrene is high in hydrophilic performance.

Description

technical field [0001] The invention relates to the technical field of material chemical industry, in particular to a preparation method of hydrophilic modified cross-linked polystyrene. Background technique [0002] At present, the synthesis of cross-linked polystyrene (CPS) usually uses linear PS as raw material, CCl 4 As a cross-linking agent, it can be obtained through Friedel-Crafts reaction. CPS is a kind of hierarchical porous material, which shows good pore structure performance, and contains active groups such as C-Cl and C=O, and has the potential to be used as an adsorbent. However, the structural unit of CPS is mainly composed of benzyl chloride, benzene, -CH 2 Cl is a hydrophobic group, so CPS has strong hydrophobicity, which makes it difficult for water to wet on the surface of CPS and inside the pore structure. When CPS is used to adsorb phenolic pollutants (such as nitrophenol) in sewage, its adsorption rate is slow, which limits its application in the fie...

Claims

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Application Information

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IPC IPC(8): C08F8/32C08F12/08C08J7/12C08J9/36C08L25/06
Inventor 涂蔚然严玮琳张可琢熊春艳姜兴茂高家俊
Owner WUHAN INSTITUTE OF TECHNOLOGY