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Method for continuously preparing water-in-oil type high internal phase emulsion and polymer porous material

A high internal phase emulsion, water-in-oil technology, which is applied in the fields of emulsion preparation and porous material preparation, can solve problems such as applications that have not yet been reported, and achieve the effects of simple and easy method, high quality and good temperature control.

Active Publication Date: 2019-06-14
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although twin-screw extrusion has been widely used in the field of polymer processing and modification, its application in the field of emulsion preparation has not been reported

Method used

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  • Method for continuously preparing water-in-oil type high internal phase emulsion and polymer porous material
  • Method for continuously preparing water-in-oil type high internal phase emulsion and polymer porous material
  • Method for continuously preparing water-in-oil type high internal phase emulsion and polymer porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Take 100 grams of Span 80 by weighing, add in the mixture of 1600 grams of styrene and 400 grams of divinylbenzene, the obtained organic solution is an oil phase. 300 grams of sodium chloride and 100 grams of potassium persulfate were weighed and added to 8000 grams of distilled water, and the resulting solution was the water phase. Heat the oil phase and the water phase to 30°C respectively, and then add the oil phase and the water phase at a volume ratio of 1:3 to the cylinder temperature set at 30°C and the twin-screw speed at 350 rpm through a constant flow pump. in a twin-screw extruder. After the water phase and the oil phase are sheared by the twin-screw, the high internal phase emulsion comes out from the outlet of the extruder. Heat the obtained high internal phase emulsion to 70°C to initiate polymerization of the monomers in the high internal phase emulsion, and react to obtain a white solid. Wash the solid product with rinsing solvent water, ethanol or thei...

Embodiment 2

[0061] Weigh 600 grams of Span 60, add 1600 grams of 2-hydroxyethyl methacrylate and 400 grams of ethylene glycol dimethacrylate into the mixture, and the resulting organic solution is an oil phase. Weigh 300 grams of sodium chloride and 300 grams of potassium persulfate and add them to 10,000 grams of distilled water, and the resulting solution is the water phase. Heat the oil phase and the water phase to 30°C respectively, and then add the oil phase and the water phase at a volume ratio of 1:4 to the cylinder temperature set at 30°C and the twin-screw speed at 100 rpm through a constant flow pump. in a twin-screw extruder. After the water phase and the oil phase are sheared by the twin-screw, the high internal phase emulsion comes out from the outlet of the extruder. Heat the obtained high internal phase emulsion to 70°C to initiate polymerization of the monomers in the high internal phase emulsion, and react to obtain a white solid. Wash the solid product with rinsing solv...

Embodiment 3

[0066] Weigh 200 grams of polyglycerol alkenyl succinate and 100 grams of HypermerT96, add 1600 grams of 2-ethylhexyl acrylate and 400 grams of divinylbenzene into the mixture, the resulting organic solution is an oil phase. Weigh 200 grams of sodium chloride and 300 grams of potassium persulfate and add them to 10,000 grams of distilled water, and the resulting solution is the water phase. Heat the oil phase and the water phase to 30°C respectively, and then add the oil phase and the water phase according to the volume ratio of 1:40 into the cylinder temperature set at 30°C and the twin-screw speed at 150 rpm through a constant flow pump. in a twin-screw extruder. After the water phase and the oil phase are sheared by the twin-screw, the high internal phase emulsion comes out from the outlet of the extruder. Heat the obtained high internal phase emulsion to 70°C to initiate polymerization of the monomers in the high internal phase emulsion, and react to obtain a white solid....

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Abstract

The invention relates to a method for continuously preparing a water-in-oil high internal phase emulsion and a polymer porous material. The method for preparing the polymer porous material comprises the steps of dissolving an emulsifier in a hydrophobic monomer to obtain a solution as an oil phase; taking an aqueous solution containing an electrolyte and an initiator as a water phase; continuouslyadding the oil phase and the water phase into a twin-screw extruder respectively, and fully emulsifying the oil phase and the water phase to form an emulsion through a twin-screw shearing effect; andafter the oil phase and the water phase are fully emulsified to form the emulsion, initiating the hydrophobic monomer in the emulsion by the initiator to obtain the polymer porous material with a pore structure and adjustable pore structure morphology. Compared with the prior art, the method is simple and easy to implement, can be used for continuously producing the high internal phase emulsion,and can be used for obtaining the porous material with the special pore structure.

Description

technical field [0001] The invention belongs to the technical field of emulsion preparation and porous material preparation, and in particular relates to a method for continuously preparing water-in-oil type high internal phase emulsion and polymer porous material. Background technique [0002] A high internal phase emulsion is an emulsion in which the volume of the dispersed phase accounts for 74.05% or more of the total volume of the emulsion. It has been widely used in the fields of food, fuel, oil recovery, cosmetics and porous materials. High internal phase emulsions are usually stabilized by non-ionic emulsifiers that account for 5-50% of the continuous phase. Recently, there are also reports of nanoparticles stabilizing high internal phase emulsions. High internal phase emulsions are usually prepared by gradually adding the dispersed phase to the continuous phase in emulsification under the action of a stabilizer. The emulsification methods include mechanical stirr...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F212/08C08F220/20C08F220/32C08F220/18C08F212/36C08F2/32C08F2/30C08J9/28C08L25/08C08L33/14C08L51/08
Inventor 章圣苗周策朱芸陈建定张晓宇王彦华乔敏
Owner EAST CHINA UNIV OF SCI & TECH
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