Preparation method for polymer microspheres having mixed absorption mode

A technology of polymer microspheres and patterns, applied in the field of polymers, to achieve the effect of high mechanical strength

Inactive Publication Date: 2014-06-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is widely used due to the simplicity of the proc

Method used

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  • Preparation method for polymer microspheres having mixed absorption mode
  • Preparation method for polymer microspheres having mixed absorption mode

Examples

Experimental program
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Effect test

Embodiment 1

[0027] (1) Preparation of porous polystyrene resin

[0028] Prepare 1 L of an aqueous solution containing 10 g / L of polyvinyl alcohol and 20 g / L of gelatin as the aqueous phase solution of the reaction system for preparing polystyrene porous polymer microspheres by suspension polymerization. Dissolve 120mg of benzoyl peroxide in a mixed solution containing 12mL of styrene, 3mL of divinylbenzene and 18mL of n-heptane, add the oily mixed solution to 60mL of aqueous solution, and obtain a mixed system of oil-water two-phase layering Stir at room temperature with a mechanical stirring speed of 300 r.p.m. for 1 hour, then raise the temperature to 80° C., and polymerize for 20 hours. The obtained product polystyrene porous polymer microspheres are washed three times with acetone and ethanol in turn. Vacuum dry at 60°C for 12 hours before use.

[0029] Chloromethyl resin preparation

[0030] Slowly add 40mL of thionyl chloride into 40mL of methylal, stir for 1 hour, mix the resulti...

Embodiment 2

[0035] (1) Preparation of porous polystyrene resin

[0036] Prepare 1L of aqueous solution containing polyvinyl alcohol (PVA) as 8g / L and gelatin as 14g / L as the aqueous phase solution of the polystyrene porous polymer microsphere reaction system prepared by suspension polymerization. Dissolve 120mg of benzoyl peroxide (BPO) in a mixed solution containing 12mL of styrene, 3mL of divinylbenzene and 20mL of n-heptane, add the oily mixed solution to 60mL of aqueous solution, and the resulting oil-water two-phase separation The mixed system was stirred at room temperature with a mechanical stirring speed of 300r.p.m. for 1 hour, then the temperature was raised to 80°C, and the polymerization reaction was carried out for 20 hours, and the obtained product polystyrene porous polymer microspheres were washed with acetone and ethanol in sequence After three times, vacuum-dry at 60° C. for 12 hours before use.

[0037] Chloromethyl resin preparation

[0038] Slowly add 40mL of thiony...

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Abstract

The invention relates to the field of polymers, particularly to a preparation method for polymer microspheres having a mixed absorption mode. According to the present invention, a suspension polymerization method is adopted to obtain a porous polystyrene hydrophobic microsphere resin with a particle size of 100-500 mum, methylal and thionyl chloride are adopted as raw materials and are subjected to an indirect chloromethylation reaction in the presence of a catalyst to prepare a chloromethyl resin, different compounds are adopted to react with the active chlorine on the chloromethyl resin, and ion exchange groups with different types are introduced so as to obtain the polymer microspheres having the ion exchange group on the skeleton hydrophobic surface and having the mixed absorption mode; and the preparation method adopts the indirect chloromethylation reaction so as to avoid use of the carcinogen chloromethyl ether, easily achieve and provide the low production cost.

Description

technical field [0001] The invention belongs to the field of polymers, and relates to a preparation method and application of mixed adsorption mode polymer microspheres. Background technique [0002] Polymer adsorption materials refer to porous, highly cross-linked polymer adsorption resins, which have large specific surface area and appropriate pore size, and have selective affinity for certain ions or molecules. Become one of the important organic functional materials. There are many ways to prepare polymer microspheres. The classic methods include suspension polymerization, dispersion polymerization, emulsion polymerization, precipitation polymerization, etc. The diameter, pore size distribution and specific surface area of ​​microspheres prepared by various methods There are differences in the dispersion of microsphere diameters. Cited from literature: He Binglin, Huang Wenqiang; Ion exchange and adsorption resin; Shanghai Science and Technology Education Press, 1995. ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F2/20C08F8/32C08F8/24C08J9/28B01J20/26B01J20/30B01J13/14
Inventor 邹汉法董靖欧俊杰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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