Porous crosslinked polystyrene microsphere and preparation method thereof

A technology of cross-linked polystyrene and polystyrene, which is applied in the field of monodisperse cross-linked polystyrene microspheres and monodisperse porous cross-linked polystyrene microspheres. Uniform diameter and good monodispersity

Active Publication Date: 2015-08-26
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention lies in the problem that most of the microsphere holes in the prior art are concentrated on the surface of the microsphere, and then provides a preparation method of porous cross-linked polystyrene microspheres, and prepared by this method Porous cross-linked polystyrene microspheres, the porous cross-linked polystyrene microspheres have surface micropores and internal macroporous structure, good monodispersity, simple process, low production cost and good repeatability, and can be widely used in chromatographic columns Packing, adsorption materials and other fields

Method used

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  • Porous crosslinked polystyrene microsphere and preparation method thereof
  • Porous crosslinked polystyrene microsphere and preparation method thereof
  • Porous crosslinked polystyrene microsphere and preparation method thereof

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Embodiment 1

[0046] A kind of porous cross-linked polystyrene microsphere, described porous cross-linked polystyrene microsphere has surface micropore internal macroporous structure, the average pore diameter of described surface micropore is 20.62nm, and the average pore diameter of internal macropore is 1.2 μm.

[0047] The preparation method of the porous cross-linked polystyrene microspheres of the present embodiment comprises the following steps:

[0048] S1. Disperse 0.26 g of monodisperse polystyrene seed microspheres in 30 ml of distilled water to form a seed microsphere solution, add a pore-forming phase to the seed microsphere solution, treat with a cell pulverizer for 30 minutes, and stir for 24 hours to make the The polystyrene seed microspheres are fully swollen to obtain the first swollen product;

[0049] The porogenic phase comprises a mixture of emulsifier sodium dodecyl sulfonate, component A dibutyl phthalate and component B toluene;

[0050] The concentration of each ...

Embodiment 2

[0063] A kind of porous cross-linked polystyrene microsphere, described porous cross-linked polystyrene microsphere has surface micropore internal macroporous structure, the average pore diameter of described surface micropore is 19.45nm, and the average pore diameter of internal macropore is 0.92 μm.

[0064] The preparation method of the porous cross-linked polystyrene microspheres of the present embodiment comprises the following steps:

[0065] S1. Uniformly disperse monodisperse polystyrene seed microspheres in 30 ml of distilled water to form a seed microsphere solution, add a pore-forming phase to the seed microsphere solution, treat with a cell pulverizer for 20 minutes, and stir for 12 hours to make the The polystyrene seed microspheres are fully swollen to obtain the first swollen product;

[0066] The porogenic phase comprises a mixture of emulsifier sodium lauryl sulfate, component A diisobutyl phthalate and component B xylene;

[0067] The concentration of each ...

Embodiment 3

[0078] A kind of porous cross-linked polystyrene microsphere, described porous cross-linked polystyrene microsphere has surface micropore internal macroporous structure, the average pore diameter of described surface micropore is 18.64nm, and the average pore diameter of internal macropore is 1.12 μm.

[0079] The preparation method of the porous cross-linked polystyrene microspheres of the present embodiment comprises the following steps:

[0080] S1. Uniformly disperse monodisperse polystyrene seed microspheres in 30 ml of distilled water to form a seed microsphere solution, add a pore-forming phase to the seed microsphere solution, treat with a cell pulverizer for 40 minutes, and stir for 18 hours to make the The polystyrene seed microspheres are fully swollen to obtain the first swollen product;

[0081] The porogenic phase comprises a mixture of emulsifier sodium dodecyl sulfonate, component A diisobutyl phthalate and component B toluene;

[0082] The concentration of e...

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Abstract

The invention relates to a porous crosslinked polystyrene microsphere which has a surface micropore and internal macropore structure. Particularly, the mean pore size of surface micropores is 18.64-22.82nm, and the mean pore size of internal macropores is 0.75-1.64 micrometers. When the porous crosslinked polystyrene microsphere with the structure serves as chromatographic column filling, the column pressure can be effectively reduced; the internal macropore structure further increases action area between a detected substance and the microsphere; the retention time is prolonged; and substance separation can be better achieved.

Description

technical field [0001] The invention relates to a porous cross-linked polystyrene microsphere, in particular to a monodisperse porous cross-linked polystyrene microsphere with surface micropores and internal macroporous structure, which is precisely synthesized by an improved seed polymerization method Monodisperse cross-linked polystyrene microspheres with different pore structures on the surface and inside. Background technique [0002] Porous materials, such as silica gel, zeolite, activated carbon, porous metal, porous polymer materials, etc., are widely used in industrial separation and purification treatment, usually used as ion exchange resin, catalyst carrier and aerospace materials, etc., to realize liquid and gas purification and separation. Porous polymer materials are highly valued because of their low density, high porosity and easy functionalization. In the past few decades, various synthetic porous polymer materials, such as polystyrenes, polyacrylamides, po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/36C08F220/20C08F212/08C08F2/24
Inventor 丛海林于冰田超
Owner QINGDAO UNIV
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