Surface pinhole sunken porous resin sphere and preparation method

A porous resin and pinhole technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as porous polymer microspheres that have not yet been seen, and achieve the convenience of large-scale production, Ease of mass transfer, high external area effect

Active Publication Date: 2019-02-26
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no report on the preparation of porous polymer microspheres with pinhole-like depressions on the surface by one-step suspension polymerization

Method used

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  • Surface pinhole sunken porous resin sphere and preparation method
  • Surface pinhole sunken porous resin sphere and preparation method
  • Surface pinhole sunken porous resin sphere and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation of Surface Pinhole-like Depressed Porous Resin Balls

[0023] Take by weighing the aqueous solution 250g that is 1.75% gelatin, 0.2% polyvinyl alcohol (alcoholysis degree 80-88%, polymerization degree 1500-2000) and 0.5% sodium chloride that mass concentration is equipped with, add and be equipped with stirring and condensation In the three-necked bottle; weigh 0.70g of benzoyl peroxide, 7.00g of glycidyl methacrylate, 28.00g of styrene, 14.18g of ethylene glycol diacrylate, and 35.12g of toluene, fully dissolve and mix them into the three-necked bottle In the bottle, stand still for 5 minutes, start stirring at a stirring speed of 520rpm, after stirring for 30 minutes, raise the temperature of the system to 85°C, and react at a constant temperature for 6 hours; After treatment, the surface pinhole-shaped concave porous resin ball P (GMA-St-EGDA) can be obtained.

Embodiment 2

[0024] Example 2: Preparation of Surface Pinhole-like Depressed Porous Resin Balls

[0025] Take by weighing the aqueous solution 250g that is 1.75% gelatin, 0.2% polyvinyl alcohol (alcoholysis degree 80-88%, polymerization degree 1500-2000) and 0.5% sodium chloride that mass concentration is equipped with, add and be equipped with stirring and condensation In the three-necked bottle; weigh 0.76g of benzoyl peroxide, 7.60g of glycidyl methacrylate, 30.40g of styrene, 19.14g of ethylene glycol diacrylate, and 42.10g of toluene, fully dissolve, mix well and add to the three-necked bottle In the bottle, stand still for 5 minutes, start stirring at a stirring speed of 550rpm, after stirring for 30 minutes, raise the temperature of the system to 85°C, and react at a constant temperature for 6 hours; After treatment, the surface pinhole-shaped concave porous resin ball P (GMA-St-EGDA) can be obtained.

Embodiment 3

[0026] Example 3: Preparation of Surface Pinhole-like Depressed Porous Resin Balls

[0027] Take by weighing the aqueous solution 250g that is 1.75% gelatin, 0.2% polyvinyl alcohol (alcoholysis degree 80-88%, polymerization degree 1500-2000) and 0.5% sodium chloride that mass concentration is equipped with, add and be equipped with stirring and condensation In the three-necked bottle; weigh 1.00g of benzoyl peroxide, 10.00g of glycidyl methacrylate, 40.00g of styrene, 20.00g of ethylene glycol diacrylate, and 54.00g of toluene, fully dissolve and mix them into the three-necked bottle In the bottle, stand still for 5 minutes, start stirring at a stirring speed of 500 rpm, after stirring for 30 minutes, raise the temperature of the system to 85°C, and react at a constant temperature for 6 hours; After treatment, the surface pinhole-shaped concave porous resin ball P (GMA-St-EGDA) can be obtained.

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Abstract

The invention relates to surface pinhole sunken porous resin spheres and a preparation method. By compounding stabilizers in a conventional suspension polymerization system and effectively adjusting monomer proportions, water to oil ratios and the amount of a pore-foaming agent, porous resin spheres of a special morphology can be prepared after sufficient coordination. The surface pinhole sunken porous resin spheres have large appearance surfaces and rich epoxy groups when being compared with porous resin spheres of same scales and pore properties, and can be adopted for later amination treatment. Meanwhile, surface pinhole sunken parts can be transformed into through holes through thermal alkali solution treatment, and mass transfer can be facilitated. The resin spheres have reparation processes and devices identical to conventional processes and devices for preparing porous spheres through industrial suspension polymerization, so that the resin spheres are convenient in on-scale production and have potential application values in industrial separation and purification.

Description

technical field [0001] The invention belongs to the field of porous adsorption and separation materials, and relates to a pinhole-shaped concave porous resin ball on the surface and a preparation method thereof. Background technique [0002] The main methods for preparing polymer microspheres include emulsion polymerization, dispersion polymerization, and suspension polymerization. Emulsion polymerization is mainly used to prepare particles of nanometer and submicron scales. Dispersion polymerization generally prepares monodisperse particles of several microns to tens of microns. Suspension polymerization It is often used to prepare large particle size particles and porous polymer microspheres from tens of microns to several millimeters. However, it can be found that the surface of polymer microspheres obtained by traditional polymerization is smooth, which is based on the principle of the lowest surface energy, and the outer surface area of ​​smooth microspheres is the lowe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/32C08F222/14C08J9/28B01J20/26B01J20/28B01J20/30
CPCB01J20/264B01J20/28021C08F212/08C08J9/28C08J2325/08C08F220/325C08F222/102
Inventor 张宝亮杨作婷寇晓康张秋禹刘琼
Owner NORTHWESTERN POLYTECHNICAL UNIV
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