Dendritic high-density solid amine fiber material and preparation method therefor

A high-density, amine fiber technology, which is applied in the field of dendritic high-density solid amine fiber materials and its preparation, can solve the problems of insufficient adsorption capacity, and achieve the effects of increased adsorption capacity, high amine group density, and broad application prospects

Inactive Publication Date: 2015-09-23
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the defects and technical deficiencies of the insufficient adsorption capacity of the existing solid amine fiber materials, and provide a renewable and environmentally friendly adsorption material with strong adsorption capacity for acid gas, large adsorption capacity, and good regeneration performance

Method used

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  • Dendritic high-density solid amine fiber material and preparation method therefor
  • Dendritic high-density solid amine fiber material and preparation method therefor
  • Dendritic high-density solid amine fiber material and preparation method therefor

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Embodiment 1

[0044] 1. Preparation

[0045] The preparation reaction formula is attached figure 2 As shown, the specific steps are as follows:

[0046] (1) The polypropylene fiber was immersed in 15 wt% NaOH aqueous solution, soaked for 24 hours, the solution was poured out, and the fiber was washed with water several times until the washing liquid became neutral, and dried in a vacuum oven at 70 ℃ to constant weight.

[0047] (2) Weigh 10 g of the polypropylene fiber obtained in step (1), place it in a conical flask with a stopper, and seal it with a polytetrafluoroethylene film. Use cobalt 60 as the irradiation source, and control the irradiation measurement to 40 KGy, and the irradiation time to 50 h. Mix methyl acrylate and methanol at a volume percentage of 40:60 to make 160 mL of a uniform mixed solution, add 4 g of pre-irradiated polypropylene fiber at a bath ratio of 1:40 (weight: volume) at 60 ℃ Reaction for 3 h. After the grafting reaction is over, the fiber is taken out, and the gr...

Embodiment 2

[0054] 1. Preparation

[0055] (1) The polypropylene fiber was immersed in 15 wt% NaOH aqueous solution, soaked for 24 hours, the solution was poured out, and the fiber was washed with water several times until the washing liquid became neutral, and dried in a vacuum oven at 70 ℃ to constant weight.

[0056] (2) Weigh 10 g of the polypropylene fiber obtained in step (1), place it in a conical flask with a stopper, and seal it with a polytetrafluoroethylene film. Use cobalt 60 as the irradiation source, and control the irradiation measurement to 40 KGy, and the irradiation time to 50 h. Add 4 g of pre-irradiated polypropylene fiber to 25 / 75 (v / v)% methyl acrylate / water mixture at a bath ratio of 1:40 (weight: volume), and react at 80 ℃ 1 h. After the grafting reaction is over, the fiber is taken out, and the grafted fiber is washed repeatedly with N,N-dimethylformamide to remove homopolymer and unreacted grafted monomer, and finally washed with ethanol, and dried in vacuum to a co...

Embodiment 3

[0063] 1. Preparation

[0064] (1) Dip the viscose fiber into 8wt% NaOH aqueous solution, soak for 24 hours, pour off the solution, wash the fiber with water several times until the washing liquid is neutral, and dry it in a vacuum oven at 70 ℃ to constant weight.

[0065] (2) Weigh 10 g of the polypropylene fiber obtained in step (1), place it in a conical flask with a stopper, and seal it with a polytetrafluoroethylene film. Use cobalt 60 as the irradiation source, and control the irradiation measurement to 40 KGy, and the irradiation time to 50 h. Prepare a uniform mixture of acrylamide monomer and water at a mass-to-volume ratio of 15 / 85. Add 4.0 g of pre-irradiated viscose fiber at a bath ratio of 1:30 (weight: volume) at 70 ℃ Reaction for 4 h. After the grafting reaction is over, the fiber is taken out, and the grafted fiber is washed repeatedly with hot water to remove homopolymer and unreacted grafting monomer, and finally washed with ethanol, dried in vacuum to constant ...

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Abstract

The invention discloses a dendritic high-density solid amine fiber material and a preparation method therefor. The structural formula of the dendritic high-density solid amine fiber material is shown as formula (I); and in the formula (I) as shown in the specification, R1 is NH2 or OH, R2 is (CH2CH2NH)n, n is equal to 0, 1, 2, 3, and R3 is H or CH3. Organic fibers and natural fibers are used as matrix fibers, the matrix fibers pretreated by alkali liquor are radiated by using gamma rays of cobalt-60, and a Michael addition and amide substitution reaction is performed for chemical modification through graft acrylic acid monomers, amination substitution reaction, amino and unsaturated monomers so as to prepare the dendritic high-density solid amine fiber material. The fiber material is high in amido density, good in heat stability and chemical stability and high in adsorption capacity of acid gas, and can be regenerated through thermal desorption recycle; moreover, the fiber material has an antibacterial action, and has wide application prospects in the fields of environmental management, medical materials, functional garment materials and the like.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials. More specifically, it relates to a dendritic high-density solid amine fiber material and a preparation method thereof. Background technique [0002] Atmospheric CO 2 The intensification of the greenhouse effect caused by the increase of concentration has become one of the biggest energy and environmental problems in the world. Therefore, CO 2 capture of CO in flue gas 2 The capture and separation technology has become a research hotspot at home and abroad. Many new technologies and materials are continuously developed and applied to CO 2 in the capture. Among them, the adsorption separation technology is regarded as a promising flue gas CO due to its advantages of low corrosion, low energy consumption, and strong cycle adsorption and desorption capacity. 2 Separation technology. In practical application, one of the keys to determine the applicability of adsorption separation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/24B01J20/30B01D53/02A01N37/44A01P1/00A01P3/00
Inventor 陈水挟吴清华许腾何辉
Owner SUN YAT SEN UNIV
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