Method for preparing three-dimensional porous oil absorption material

An oil-absorbing material, three-dimensional porous technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve problems such as high cost, complicated process, and only 40% porosity. Achieve the effects of large oil absorption, simple process and fast oil absorption rate

Inactive Publication Date: 2017-01-18
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The Chinese patent application with the publication number CN105214602A discloses a porous oil-absorbing material and its preparation and regeneration method. The prepared oil-absorbing material has a strong oil-absorbing capacity, but its porosity is only 40%, and surface modification treatment is required. complex and expensive
The Chinese patent application with publication number CN103772627A discloses a method for preparing a polyacrylate / lignin composite oil-absorbing material. The oil-absorbing material prepared by this method has high oil absorption and good structural uniformity, but it can only partially biodegrade

Method used

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  • Method for preparing three-dimensional porous oil absorption material
  • Method for preparing three-dimensional porous oil absorption material
  • Method for preparing three-dimensional porous oil absorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Take by weighing 0.395g polylactic acid particles respectively with ME104E Mettler-Tolly electronic balance, be dissolved in 2ml dichloromethane, under room temperature, make it fully stir until completely dissolving, obtain the polylactic acid particle that concentration is 13%. Lactic acid solution.

[0031] (2) With the prepared polylactic acid solution, under the stirring of a magnetic stirrer, add 3ml of poor solvent drop by drop until the solution turns from clear to cloudy, leave it at room temperature for 24h, take it out, immerse it in anhydrous methanol, and place Shake it on a shaker, change it several times, and dry it under vacuum at room temperature to obtain a three-dimensional porous material.

[0032] (3) The oil absorption performance of the three-dimensional porous material was tested. The porosity of the porous material was 90%, the water contact angle was 141.7°, and the oil absorption was 13 g / g.

[0033] (4) Submerge the porous material after...

Embodiment 2

[0035] (1) Take by weighing 0.395g polylactic acid particles respectively with ME104E Mettler-Tolly electronic balance, be dissolved in 2ml dichloromethane, under room temperature, make it fully stir until completely dissolving, obtain the polylactic acid particle that concentration is 13%. Lactic acid solution.

[0036] (2) Add 0.07g of kapok fibers with a length of 0.2mm to the prepared polylactic acid solution under the stirring of a magnetic stirrer, stir evenly, add 3ml of poor solvent drop by drop until the solution is separated, and stand at room temperature for 24h , taken out, immersed in anhydrous methanol, and placed on a shaker to vibrate, after being replaced several times, vacuum-dried at room temperature to obtain a polylactic acid / kapok short fiber composite porous material.

[0037] (3) The oil absorption performance of the composite porous material was tested. The porosity of the porous material was 84.7%, the water contact angle was 141.4°, and the oil absor...

Embodiment 3

[0039] (1) Take by weighing 0.395g polylactic acid particles respectively with ME104E Mettler-Tolly electronic balance, be dissolved in 2ml dichloromethane, under room temperature, make it fully stir until completely dissolving, obtain the polylactic acid particle that concentration is 13%. Lactic acid solution.

[0040] (2) Add 0.07 g of kapok fibers with a length of 5 mm to the prepared polylactic acid solution under the stirring of a magnetic stirrer, stir evenly, add 3 ml of poor solvent drop by drop until the solution is separated into phases, and stand at room temperature for 24 hours. Take it out, immerse it in anhydrous methanol, and place it on a shaker to vibrate. After changing it several times, it is vacuum-dried at room temperature to obtain a polylactic acid / kapok long fiber composite porous material.

[0041] (3) The oil absorption performance of the composite porous material was tested. The porosity of the porous material was 87.3%, the water contact angle was ...

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Abstract

The invention relates to a method for preparing a three-dimensional porous oil absorption material. The method comprises the steps that polylactic acid is dissolved in a solvent and stirred to be dissolved, and a polylactic acid solution is obtained; under the stirring condition, a poor solvent is dropwise added into the polylactic acid solution till the solution turns turbid from clear, still standing is carried out at room temperature, replacement and vacuum drying are carried out, and the three-dimensional porous oil absorption material is obtained; or under the stirring condition, natural fibers are added into the polylactic acid solution, then the poor solvent is dropwise added till the solution phase is separated, still standing is carried out at room temperature, replacement is carried out, and the three-dimensional porous oil absorption material is obtained. The novel oil absorption material is controllable in aperture size and shape and can be suitable for different application occasions.

Description

technical field [0001] The invention belongs to the field of preparation of oil-absorbing materials, in particular to a method for preparing three-dimensional porous oil-absorbing materials. Background technique [0002] With the rapid development of industry, oil spill accidents will occur in the process of people's mining, transportation, utilization and storage of oil, which will lead to more and more serious pollution of water resources such as rivers and oceans. The damage of oil pollution to the environment and the harm to human beings have aroused widespread concern, and the oil spilled on the water surface must be removed in time and effectively. Currently commonly used oil pollution treatment materials include porous and highly absorbent powdered inorganic minerals, nanoscale composite membrane materials, and polypropylene melt-blown non-woven fabrics. [0003] The Chinese patent application with the publication number CN105214602A discloses a porous oil-absorbing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28
CPCB01J20/24B01J20/26B01J20/28054C02F1/28C02F1/285C02F1/286
Inventor 王新厚乔娟孙晓霞
Owner DONGHUA UNIV
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