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Fluorine-containing aromatic polyester-siloxane segmented copolymer as well as preparation method and application thereof

A technology of siloxane block and aromatic polyester, which is applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of separation membranes such as water resistance, solubility, and poor swelling, and achieve excellent hydrophobicity and lipophilicity. Effect of low surface energy and low adhesion

Active Publication Date: 2014-12-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many patent reports on the preparation method of oil-water separation membrane, such as application numbers 201310309217.6, 2012101445713, 200810100985.X, 201210435983.2, 201310027762.6, 201310224027 and other patents. , poor swelling and other problems
The research on the fluorine-containing polyaromatic polyester-siloxane block copolymer oil-water separation membrane prepared by the present invention has not yet been reported in the literature

Method used

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  • Fluorine-containing aromatic polyester-siloxane segmented copolymer as well as preparation method and application thereof
  • Fluorine-containing aromatic polyester-siloxane segmented copolymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of hydroxyl-terminated aromatic polyester : First add 10.5g 1,1-bis(4-hydroxyphenyl)-1-phenyltrifluoroethane, 2.65g NaOH, 80ml deionized water and 0.051g phase transfer catalyst tetrabutyl Ammonium bromide, stirring to dissolve 1,1-bis(4-hydroxyphenyl)-1-phenyltrifluoroethane in water to form an inorganic phase. Dissolve 2.90 g each of terephthaloyl dichloride and isophthaloyl dichloride in 150 ml of dichloromethane to form an organic phase with a certain concentration. Drop the organic phase into the inorganic phase at a temperature of 10°C, stir and react for 1 hour, increase the temperature, stir and react below 20°C for 3 hours, then add dilute hydrochloric acid to wash to neutral, and obtain hydroxyl-terminated aromatic polyphenols after drying. Esters, using GPC-MwA gel chromatography, the number average molecular weight of the aromatic polyester was 26300.

[0040] Preparation of fluorine-containing aromatic polyester-siloxane block copolymer: th...

Embodiment 2

[0043] Preparation of hydroxyl-terminated aromatic polyester : First, add 10.14 g of bisphenol AF, 2.64 g of NaOH, 100 ml of deionized water and 0.045 g of phase transfer catalyst tetrabutylammonium bromide into a three-necked flask, and stir to dissolve bisphenol AF in water to form an inorganic phase. Dissolve 4.05g of terephthaloyl chloride and 2.03g of simple phthaloyl chloride in 150 ml of dichloromethane to form an organic phase with a certain concentration. Slowly drop the organic phase into the inorganic phase at a temperature of 5°C, stir and react for 2 hours, raise the temperature, and stir and react for 3.5 hours below 10°C. The product was washed with dilute hydrochloric acid until neutral, and after drying, the hydroxyl-terminated aromatic polyester was obtained. The number-average molecular weight of the hydroxyl-terminated fluorine-containing aromatic polyester was measured to be 48,000 by using GPC-MwA gel chromatography.

[0044] Preparation of fluorine-c...

Embodiment 3

[0047] Preparation of hydroxyl-terminated aromatic polyester : First add 20.32g of trifluoromethylhydroquinone, 2.60g of NaOH, 80 ml of deionized water and 0.06 g of phase transfer catalyst tetrabutylammonium bromide in the there-necked flask, and stir to dissolve the trifluoromethylhydroquinone It forms an inorganic phase in water. Dissolve 4.05g of terephthaloyl chloride and 2.03g of phthaloyl chloride in 150 ml of dichloromethane to form an organic phase with a certain concentration. Slowly drop the organic phase into the inorganic phase at a temperature of 10°C, stir and react for 5 hours, and react at a temperature below 10°C for 2 hours after the drop is complete. The product was washed with dilute hydrochloric acid to neutrality, and the hydroxyl-terminated aromatic polyester was obtained after drying. The number-average molecular weight of the hydroxyl-terminated fluorine-containing aromatic polyester was measured to be 17,000 by using GPC-MwA gel chromatography.

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Abstract

The invention relates to a fluorine-containing aromatic polyester-siloxane segmented copolymer as well as a preparation method and application thereof, and belongs to the technical field of preparation of a high-molecular polymer. The fluorine-containing aromatic polyester-siloxane segmented copolymer is prepared by mixing terminated hydroxyl polysiloxane, diisocyanate, a catalyst and a solvent, and reacting for 2-5h at 60-100 DEG C; adding terminated hydroxyl fluorine-containing aromatic polyester, and reacting for 1-5h at 60-100 DEG C. The segmented copolymer disclosed by the invention is relatively low in surface energy, and excellent in hydrophobic performance and oleophylic performance; the segmented copolymer can be used for preparing an oil-water separation membrane and is applicable to oil-water separation; according to the prepared oil-water separation membrane, a water contact angle is more than 120 degrees and a contact angle of the membrane and oil is reduced to be less than 5 degrees within 1s in air.

Description

technical field [0001] The invention relates to a fluorine-containing aromatic polyester-siloxane block copolymer, a preparation method and application thereof, and belongs to the technical field of polymer preparation. Background technique [0002] With the acceleration of urban industrialization, people's awareness of environmental protection has gradually increased. Oily sewage is an important class of environmental pollutants, and the sewage discharged from the petroleum and chemical industry contains a large amount of oil, most of which are non-polar oils, which are difficult to biodegrade. Petroleum is easy to form an airtight oil film in water, which affects the local ecological environment and is also one of the important reasons for water pollution. At present, oil-water separation technology mainly uses oil-water separators, but complex equipment, high energy consumption and high cost are problems that restrict the development of this industry. At present, the oi...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/73C08G18/42C08G18/61B01D71/80B01D69/02B01D67/00B01D17/022
CPCB01D71/80C08G18/4009C08G18/4607C08G18/61C08G18/73C08G18/7671
Inventor 李辉吴鹏飞张书香咸立杰张传敏王盼盼
Owner UNIV OF JINAN
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