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Emergent adsorption material prepared through utilizing waste PET (polyethylene terephthalate) fibers and preparation method thereof

A technology of adsorption materials and fibers, which is applied in the field of emergency adsorption materials prepared by using waste PET fibers and its preparation, can solve the problems of low adsorption capacity, cumbersome preparation process, and difficult source of matrix, etc., achieve high adsorption capacity, simple synthesis process steps, The effect of easy separation

Active Publication Date: 2012-07-18
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the disadvantages of the existing fibrous adsorption material matrix source is not easy, the preparation process is cumbersome, and the adsorption capacity is low, the present invention provides an emergency adsorption material prepared by using waste PET fibers and a preparation method, which adopts a simple and easy method for waste PET (Polyethylene terephthalate) fibers are pretreated, and a new type of fibrous organic-inorganic composite emergency adsorption material is prepared by grafting reaction and chemical modification, which has a high adsorption rate and adsorption capacity for arsenic (V) in water. capacity

Method used

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  • Emergent adsorption material prepared through utilizing waste PET (polyethylene terephthalate) fibers and preparation method thereof
  • Emergent adsorption material prepared through utilizing waste PET (polyethylene terephthalate) fibers and preparation method thereof
  • Emergent adsorption material prepared through utilizing waste PET (polyethylene terephthalate) fibers and preparation method thereof

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Embodiment 1

[0036] Such as Figure 7 The synthesis process of an emergency adsorption material prepared by using waste PET fibers is as follows: use 5 g of waste PET fibers and add 250 grams of ethanol to extract in a Soxhlet extractor for 8 hours, place it in a 3-necked bottle after drying, add 250 Grams of DMF swell for 8 hours (40°C). Mix and stir 100 grams of acrylic acid and 200 grams of ethylenediamine (120r / min), stir and react at 40°C for 12 hours, then add 600 grams of DMF and 300 grams of polyoxyethylene sorbitan oleate (Tween-80) to prepare into an emulsion. Pour the emulsion into a 3-neck bottle filled with PET, add 1 g of benzoyl peroxide, heat in a water bath at 95°C, and stir the reaction at a speed of 120r / min for 12 hours. separated, washed with acetone, dried, and weighed

[0037] The grafting rate of PET-AA-NN was 470%. Soak PET-AA-NN in 1000 ml of 5% aluminum chloride solution, react for 12 hours at 40°C with a stirring rate of 120r / min, and take it out to obtain P...

Embodiment 2

[0042] Use 5g of waste PET (polyethylene terephthalate) fibers to add 250 grams of acetone to extract in a Soxhlet extractor for 8 hours, put it in a 3-necked bottle after drying, add 250 grams of dichloroethane to swell 8 hours (swelling temperature is 30 degrees Celsius). Mix 100 grams of acrylic acid with 400 grams of ethylenediamine, stir (120r / min) at 40°C for 12 hours, then add 1000 grams of dichloroethane and 500 grams of polyoxyethylene oleate (OE-6) to form an emulsion . Pour the emulsion into a 3-neck bottle filled with PET, add 1g of diacyl peroxide, heat in a water bath at 95°C, and stir the reaction at a speed of 120r / min for 12 hours, and perform solid-night separation of the obtained PET-AA-NN , washed with acetone, dried in the air, and the grafting rate of the PET-AA-NN obtained by weighing was 520%. Soak PET-AA-NN in 1000 ml of 20% aluminum chloride solution, react for 12 hours at 40°C with a stirring rate of 120r / min, and take it out to obtain PET-AA-NN-Al...

Embodiment 3

[0047] Use 5g of waste PET fiber and add 250g of petroleum ether to extract it in a Soxhlet extractor for 8 hours, put it in a 3-neck bottle after drying, add 250g of toluene to swell for 8 hours, and the swelling temperature is 40 degrees Celsius. After mixing 100 grams of acrylic acid and 300 grams of ethylenediamine, stir (120 r / min) at 40 ° C for 12 hours, then add 800 grams of toluene and 400 grams of diglycerol polypropylene glycol ether to form an emulsion. Pour the emulsion into a 3-neck bottle filled with PET, add 1g of azobisethylbutyronitrile, heat in a water bath at 95°C, and stir the reaction at a speed of 120r / min for 12 hours, and carry out solid- Separate at night, wash with acetone, dry in the air, and weigh the graft rate of the obtained PET-AA-NN to be 490%. Soak PET-AA-NN in 1000 ml of 10% aluminum chloride solution, react for 12 hours at 40°C with a stirring rate of 120r / min, and take it out to obtain PET-AA-NN-Al 3+ Fiber, PET-AA-NN-Al 3+ Soak the fiber...

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Abstract

The invention which discloses an emergent adsorption material prepared through utilizing waste PET fibers and a preparation method thereof belongs to the environmental material synthesis and application field. The material comprise a PET skeleton, amino groups grafted to the surface of the PET skeleton, and finally modified basic aluminum chloride, the average of the material is 40-60mum, the content of basic aluminum chloride in the material is 13.4-16.7%, the adsorption material is fibrous in shape, the surface contains basic aluminum chloride, the contact angle between the material and water is 52DEG, and the adsorption quantity of the material to arsenic is 9.982-14.989mg / g. The preparation method comprises the following steps: preprocessing the waste PET fibers, preparing a reaction emulsion, carrying out a grafting reaction, and carrying out a PET-AA-NN fiber loading metal reaction. The material is suitable for the emergent processing of emergent heavy metal water pollution events of natural water of rivers, lakes and the like. When the emergent adsorption material is prepared, the recovery and the utilization of the waste PET fibers are also realized.

Description

technical field [0001] The invention discloses an organic-inorganic composite emergency adsorption material prepared by using waste PET fibers and a preparation method thereof, more specifically based on an emergency adsorption fiber modified with basic aluminum chloride based on waste PET fibers as a matrix and its preparation method. Background technique [0002] As a polymer material, PET is widely used in the manufacture of fibers / fabrics, container packaging, and engineering materials. In 2010, the output of PET in the world exceeded 100 million tons, 70% of which were used to make fibers / fabrics. As the world's largest producer and consumer of PET, China produces and consumes a large amount of PET materials every year, but less than 10% of the PET is recycled. Since PET fibers are difficult to degrade in the environment and cannot be recycled by simple physical methods, how to recycle waste PET fibers has become a difficult problem [B.Kuczenski, R.Geyer, Material flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/58B09B3/00
Inventor 王津南孟颖许丽杨欣
Owner NANJING UNIV
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