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Super-crosslinked polymer material and preparation method thereof

A polymer material and super-crosslinking technology, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of polymer micropore rupture, unsatisfactory VOCs adsorption performance, and weak adsorption capacity, etc., to achieve increased Effects of large porosity, increased size, and increased adsorption capacity

Inactive Publication Date: 2019-02-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter the HCPs prepared by one-step self-condensation method or crosslinking method are mainly microporous, they are more suitable for absorbing carbon dioxide and hydrogen; while VOCs have a relatively large molecular size, the adsorption capacity of traditional HCPs for VOCs is weak, and at the same time , HCPs will swell when they adsorb a large amount of VOCs. The swelling of traditional highly rigid HCPs will cause polymer micropores to rupture, so the adsorption performance of HCPs synthesized by traditional methods is not ideal for VOCs.

Method used

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  • Super-crosslinked polymer material and preparation method thereof
  • Super-crosslinked polymer material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] (1) Dissolve 0.15mol phenylethyl alcohol and 0.05mol dimethoxymethane into 15mL 1,2-dichloroethane, then add 0.15mol ferric chloride hexahydrate, stir at 50°C for 5h, then reflux at 80°C 24h, filter to obtain brown solid crude product;

[0021] (2) Ultrasonic disperse the brown solid crude product in absolute ethanol, and reflux for purification for 12 hours;

[0022] (3) After filtering the product obtained in step (2), ultrasonically disperse it in distilled water, and let it stand at 50°C for 6 hours;

[0023] (4) Filter the product prepared in step (3) and freeze-dry for 24 hours to obtain the hypercrosslinked polymer material HCP 1 .

[0024] figure 1 Electron microscope image of the resulting hypercrosslinked polymer material. It can be seen from the figure that the prepared hypercrosslinked polymer is a uniform needle-like structure.

Embodiment 2

[0043] (1) Dissolve 0.05mol phenylethyl alcohol and 0.05mol dimethoxymethane into 13mL 1,2-dichloroethane, then add 0.05mol ferric chloride hexahydrate, stir at 50°C for 5h, then reflux at 60°C 25h, filter to obtain brown solid crude product;

[0044] (2) Ultrasonic disperse the brown solid crude product in absolute ethanol, and reflux for purification for 12 hours;

[0045] (3) After filtering the product obtained in step (2), ultrasonically disperse it in distilled water, and let it stand at 50°C for 6 hours;

[0046] (4) Filter the product prepared in step (3), and freeze-dry for 24 hours to obtain a hypercrosslinked polymer material.

Embodiment 3

[0048](1) Dissolve 0.1mol phenylethyl alcohol and 0.05mol dimethoxymethane into 20mL 1,2-dichloroethane, then add 0.1mol ferric chloride hexahydrate, stir at 50°C for 5h, then reflux at 120°C 15h, filter to obtain brown solid crude product;

[0049] (2) Ultrasonic disperse the brown solid crude product in absolute ethanol, and reflux for purification for 12 hours;

[0050] (3) After filtering the product obtained in step (2), ultrasonically disperse it in distilled water, and let it stand at 50°C for 6 hours;

[0051] (4) Filter the product prepared in step (3), and freeze-dry for 24 hours to obtain a hypercrosslinked polymer material.

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Abstract

The invention discloses a super-crosslinked polymer material and a preparation method thereof. The preparation method comprises the following steps of by taking phenethyl alcohol as a monomer, dimethoxymethane as an external crosslinking agent and ferric trichloride hexahydrate as a catalyst, performing synthesis at a certain temperature to prepare a crude brown solid product, and then performingpurification with anhydrous ethanol, washing with hot water, filtering and freeze drying on the obtained crude brown solid product to obtain the super-crosslinked polymer material. For the super-crosslinked polymer material and the preparation method, by integrating the advantages of a one-step self-condensation method and an external crosslinking method, the size of molecules which can be adsorbed by the super-crosslinked polymer material is increased, the flexibility of the material is improved, and the super-crosslinked polymer material has good adsorption ability to VOCs; and in addition,the super-crosslinked polymer material is simple in preparation technology and low in energy consumption, does not cause secondary pollution and can be applied to adsorption treatment of the VOCs as anovel adsorbent.

Description

technical field [0001] The invention belongs to the field of adsorption functional materials, and in particular relates to a hypercrosslinked polymer material and a preparation method thereof. Background technique [0002] In my country, volatile organic compounds (VOCs) refer to organic compounds with a saturated vapor pressure greater than 133.32 Pa at normal temperature and a boiling point at 50-260°C at normal pressure, or any organic solid or liquid that can volatilize at normal temperature and pressure. Most of the VOCs are highly irritating and toxic, the most common are benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate (TDI), diisocyanate Cresyl, etc. At present, the treatment technologies of VOCs mainly include recycling method and destruction method. Whether from an environmental or economic point of view, the recycling law is worth advocating. VOCs recovery technology includes adsorption, condensation, absorption, m...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D53/02
CPCB01D53/02B01D2257/708B01J20/262B01J2220/4812
Inventor 李晓冒姣姣张卫英孙雪邢会昕
Owner FUZHOU UNIV
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