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Hydrophilic and oleophilic sulfonated polystyrene/polystyrene abnormal composite microsphere and process

A technology for sulfonating polystyrene and polystyrene, which is applied in the field of polymer microsphere material preparation, can solve problems such as unreported reports, and achieve the effects of low price, mild conditions and high yield

Inactive Publication Date: 2014-08-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on amphiphilic composite particles with polar functional group sulfonic acid groups at present.

Method used

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  • Hydrophilic and oleophilic sulfonated polystyrene/polystyrene abnormal composite microsphere and process
  • Hydrophilic and oleophilic sulfonated polystyrene/polystyrene abnormal composite microsphere and process
  • Hydrophilic and oleophilic sulfonated polystyrene/polystyrene abnormal composite microsphere and process

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Step 1: Prepare crosslinked polystyrene microspheres by dispersion polymerization, and obtain polystyrene microspheres with a particle size of 3.5 μm and a crosslinking degree of 2% by dispersion polymerization.

[0020] Step 2: Disperse PS microspheres into concentrated H 2 SO 4 solution (the concentration of PS microspheres is 2.0wt.%), added to a three-necked flask equipped with mechanical stirring, sulfonated at 50°C for 6 hours, centrifuged and washed with deionized water and ethanol, and dried to obtain sulfonated polyphenylene Ethylene microspheres.

[0021] Step 3: Disperse sulfonated polystyrene microspheres in deionized water (the concentration of sulfonated polystyrene microspheres is 1.0wt.%), and add them into a four-necked flask equipped with mechanical stirring, a condenser and nitrogen. Dissolve AIBN (3.0% by mass of St) and DVB (1.0% by mass of St) into St (500% by mass of sulfonated polystyrene microspheres), stir well, and then use a syringe pump to...

example 2

[0024] Step 1: Prepare crosslinked polystyrene microspheres by dispersion polymerization, and obtain polystyrene microspheres with a particle size of 2.2 μm and a crosslinking degree of 1% by dispersion polymerization.

[0025] Step 2: Disperse PS microspheres into concentrated H 2 SO 4 solution (the concentration of PS microspheres is 5.0wt.%), added to a three-necked flask equipped with mechanical stirring, sulfonated at 40°C for 2 hours, centrifuged and washed with deionized water and ethanol, and dried to obtain sulfonated polyphenylene Ethylene microspheres.

[0026] Step 3: Disperse sulfonated polystyrene microspheres in deionized water (the concentration of sulfonated polystyrene microspheres is 6.0wt.%), and add them into a four-necked flask equipped with mechanical stirring, a condenser and nitrogen. Dissolve AIBN (0.5% by mass of St) and DVB (3.0% by mass of St) into St (300% by mass of sulfonated polystyrene microspheres), stir well, and then use a syringe pump to...

example 3

[0029] Step 1: Prepare crosslinked polystyrene microspheres by dispersion polymerization, and obtain polystyrene microspheres with a particle size of 4.0 μm and a crosslinking degree of 4% by dispersion polymerization.

[0030] Step 2: Disperse PS microspheres into concentrated H 2 SO 4 solution (the concentration of PS microspheres is 10.0wt.%), added to a three-necked flask equipped with mechanical stirring, sulfonated at 80°C for 1 hour, centrifuged and washed with deionized water and ethanol, and dried to obtain sulfonated polyphenylene Ethylene microspheres.

[0031] Step 3: Disperse sulfonated polystyrene microspheres in deionized water (the concentration of sulfonated polystyrene microspheres is 10.0wt.%), and add them into a four-necked flask equipped with mechanical stirring, condenser and nitrogen. Dissolve AIBN (1.0% by mass of St) and DVB (1.0% by mass of St) into St (300% by mass of sulfonated polystyrene microspheres), stir well, and then use a syringe pump to ...

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Abstract

The present invention relates to sulfonated polystyrene / polystyrene oil-water amphiphilic special-shaped composite microspheres and a process thereof. Cross-linked polystyrene microspheres were obtained by dispersion polymerization, and the surface was modified by sulfonation to obtain core-shell structure particles with hydrophilic sulfonated polystyrene on the surface and polystyrene inside, and then swelled Polymerization increases the inner core of the microspheres, and initial phase separation occurs, further swelling polymerization makes the phase separation more obvious, and a new PS oil phase grows from the hydrophilic surface to obtain amphiphilic sulfonated polystyrene SPS / polystyrene PS particles. Adjusting the seed cross-linking degree, swelling ratio, and swelling dose can control the surface morphology and the distribution of hydrophilic / hydrophobic regions of the polymer composite microspheres, and obtain amphiphilic polymer composite microspheres. The catalyst has good compatibility in the oil-water two-phase system, which improves the catalytic efficiency of the heterogeneous reaction; it can be used as a solid surfactant to promote the miscibility of the oil-water two-phase. In addition, the preparation method has mild conditions, high yield and low raw material price.

Description

technical field [0001] The invention belongs to the technical field of preparation of polymer microsphere materials, and in particular relates to sulfonated polystyrene / polystyrene (SPS / PS) oil-water amphiphilic special-shaped composite microspheres and a process thereof. Background technique [0002] Anisotropic polymeric microspheres are characterized by non-uniform surface chemistry and structure, allowing them to possess special functions not found in other materials. In the 1980s, the concept of "particle design" pointed out the direction for scholars to prepare anisotropic colloidal particles with certain structures and shapes. In 1991, DeGennes proposed the concept of Janus Particles in his Nobel Prize-winning speech to represent particles with two relative properties at the same time. Janus is a two-faced god Janus (Janus) with two faces in ancient Roman mythology. Later, the academic community continued to use this name, and vividly called the particles with two re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/06C08F212/08C08F8/36
Inventor 杨穆王戈郭阳光吴强
Owner UNIV OF SCI & TECH BEIJING