Adsorption material modified by photosensitive polymer and its preparation method and application

A technology of photosensitive polymer and adsorption material, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of poor oil retention, poor oil-water selectivity, low reaction efficiency, etc., and achieves simple and convenient polymer modification methods. Good oil-water selectivity and the effect of improving oil absorption rate

Active Publication Date: 2017-02-01
苏州灿燊环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional oil-absorbing materials (such as diatomaceous earth, oil-absorbing pads, fiber fabrics, etc.) are relatively low in cost but still have obvious deficiencies: (1) small adsorption capacity; (2) poor oil-water selectivity; (3) poor oil retention , low recycling efficiency
It has been reported in the literature that spiropyran small molecules are modified on the surface of substrate materials by dehydration condensation and other methods to obtain functional materials that are hydrophobic under visible light and hydrophilic under ultraviolet light, but this method also has low reaction efficiency. Insufficient

Method used

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  • Adsorption material modified by photosensitive polymer and its preparation method and application
  • Adsorption material modified by photosensitive polymer and its preparation method and application
  • Adsorption material modified by photosensitive polymer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Synthesis of photosensitive monomer spiropyran 2-methacrylate.

[0042] Under nitrogen protection, dissolve 1g (2.83mmol) spiropyran (SP-OH) in 15mL of anhydrous dichloromethane, add 300μl (3.1mmol) 2-methacryloyl chloride dropwise, and react under ice bath conditions After 12 hours, after the reaction was over, dichloromethane was removed by rotary evaporation, and the resulting crude product was purified by silica gel column chromatography (developing solvent was petroleum ether:dichloromethane=1:2), and 0.4 g of yellow solid was obtained after vacuum drying, namely Spiropyran 2-methacrylate (SPMA).

[0043]

[0044] 1 H-NMR (400MHz, CDCl 3 ), δ (ppm): 7.97-8.05 (m, 2H), 7.17-7.24 (m, 1H),7.09 (d, 1H), 6.89 (dd, 2H), 6.74 (dd, 2H), 6.07 (d, 1H), 5.87 (d, 1H), 5.56(d, 1H), 4.3 (t, 2H), 3.37-3.62 (m, 2H), 1.92 (s, 3H), 1.28 (s, 3H), 1.16 (s ,3H).

Embodiment 2

[0045]Example 2: Vinyltrichlorosilane modification of melamine foam.

[0046] Dissolve 1 g of vinyltrichlorosilane in 99 g of toluene to obtain a 1% by weight vinyltrichlorosilane toluene solution for use.

[0047] Cut melamine foam (purchased from Zhangjiagang Mingjie Sponge Products Co., Ltd.) into 2cm×2cm×2cm squares (65mg in weight), immerse in 26g of the above-mentioned vinyltrichlorosilane toluene solution, take out the foam after 20 minutes , squeeze out the silane solution in it, then wash the foam repeatedly with 50mL ethanol for 3 times, and dry it in an oven at 100°C to obtain vinyltrichlorosilane-modified melamine foam (66.5mg in weight).

Embodiment 3

[0048] Example 3: Copolymerization of spiropyran monomer SPMA and vinyl trichlorosilane modified melamine foam.

[0049] The feeding amount of various reactants in Example 1 was scaled up year-on-year, and 1 g of SPMA was prepared according to the same procedure. Weigh 840mg (2.1mmol) of SPMA, 5mg (0.03mmol) of AIBN and dissolve in 28.5g of DMF to obtain 29.345g of copolymer solution for use.

[0050] Submerge the vinyltrichlorosilane-modified melamine foam (2cm×2cm×2cm, 65.5mg) obtained in Example 2 into the above-mentioned copolymerization solution, squeeze repeatedly to make the copolymerization solution fully contact with the foam, and then, under the protection of argon, React at 70°C for 12 hours. After the reaction, take out the foam, squeeze out the solution, wash the foam three times with 50mL n-hexane, and finally dry it in an oven at 100°C to obtain the SPMA photosensitive polymer-modified melamine foam material.

[0051] The success of photopolymer modification o...

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Abstract

The invention discloses a photosensitive polymer modified adsorbing material and a preparation method and application of the photosensitive polymer modified adsorbing material. Particularly, the preparation method of the photosensitive polymer modified adsorbing material comprises the following steps: (1) synthesizing a spiropyrane photosensitive monomer; (2) performing silane coupling agent modification to a substrate material; and (3) copolymerizing the photosensitive monomer and the modified substrate material. According to the photosensitive polymer modified adsorbing material, the oil-water selectivity and the oil-keeping performance of the original substrate material are enhanced, the adsorbing material has the characteristics of light-operated adsorption / desorption of oils and organic solvents, and compared with the method for extruding for deoiling by use of mechanical pressure, the method has the advantages that the intelligentized function is achieved, the space and the time are almost not limited, and the operation is easy.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a spiropyran type photosensitive polymer-melamine foam composite adsorption material with ultraviolet light responsiveness, a preparation method thereof, and an application as an oil-absorbing material. Background technique [0002] In recent years, frequent oil and organic solvent leakage incidents not only bring serious harm to the natural environment, but also have a huge impact on the social economy, which is not conducive to the sustainable development of social cycles. At present, using oil-absorbing materials to deal with leaked oil and organic solvents is one of the most economical and effective methods. However, although the traditional oil-absorbing materials (such as diatomaceous earth, oil-absorbing pads, fiber fabrics, etc.) are relatively low in cost, they still have obvious deficiencies: (1) small adsorption capacity; (2) poor oil-wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30B01D17/022
CPCB01D17/0202B01J20/261
Inventor 路建美陈冬赟
Owner 苏州灿燊环保科技有限公司
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