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Oil-absorption material and preparation method thereof

An oil-absorbing material, polylactic acid technology, which is applied in separation methods, chemical instruments and methods, grease/oily substances/floating matter removal devices, etc. Good oil absorption effect, simple preparation method and good biocompatibility

Active Publication Date: 2012-10-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this material mainly utilizes the inherent lipophilic and hydrophobic properties of PHBV, and does not improve the selectivity to oil and water, and does not improve the wettability of the material.

Method used

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  • Oil-absorption material and preparation method thereof
  • Oil-absorption material and preparation method thereof
  • Oil-absorption material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, preparation and functional identification of oil-absorbing ball

[0043] 1. Preparation of oil-absorbing balls

[0044] Dissolve PLA (polylactic acid, Shenzhen Guanghua Weiye Industrial Co., Ltd., molecular weight = 69000, L-polylactic acid) in 1,4-dioxane solvent to prepare a PLA solution with a concentration of 0.1g / mL, and cast the PLA solution Put it into a corresponding spherical mold, and immerse in absolute ethanol for phase separation for 30 minutes. The 1,4-dioxane solvent is removed and PLA precipitates into a solid at the same time. The solid phase is collected as an oil-absorbing material, and then it is simply processed ( dry) to get oil-absorbing balls.

[0045] 2. Functional identification of oil-absorbing materials

[0046] The oil-absorbing ball obtained in the above 1 was scanned by an electron microscope, and the surface morphology was observed at a magnification of 410 times. The results were as follows figure 1 As shown, it can be s...

Embodiment 2

[0050] Embodiment 2, preparation and functional identification of oil-absorbing sheet

[0051] 1. Preparation of oil-absorbing tablets

[0052] Dissolve PLA (polylactic acid, Shenzhen Guanghua Weiye Industrial Co., Ltd., L-polylactic acid) with a molecular weight of 69,000 in 1,4-dioxane solvent to prepare a PLA solution with a concentration of 0.1g / mL. Spread on a glass substrate, immerse in absolute ethanol for phase separation for 30 minutes, remove the 1,4-dioxane solvent and at the same time PLA precipitate into a solid, collect the solid phase as the oil-absorbing material, the shape is a sheet, and then the sheet Put the shaped oil-absorbing material at 40°C and dry in an oven to obtain an oil-absorbing sheet.

[0053] 2. Function identification of oil-absorbing sheet

[0054]Scan the oil-absorbing sheet obtained in the above 1 with an electron microscope, and magnify it 14,000 times to observe the surface morphology. The results are as follows: Figure 5 As shown, i...

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Abstract

The invention discloses an oil-absorption material and a preparation method thereof. The preparation method of the oil-absorption material includes the following steps: 1) dissolving polyactic acid into organic solvent capable of dissolving the polyactic acid so as to obtain polyactic acid solution; and 2) performing phase separation on the polyactic acid to obtain the oil-absorption material. According to experiments, the preparation method of the oil-absorption material is easy and requires no other chemical additives, synthetic materials are wide in source, the prepared oil-absorption material has good oil-absorption effect, and the materials are biodegradable, so that the problems of secondary pollution caused by treatment of burning, burying and the like are well solved. The oil-absorption material can be used for treating sewage containing oil, cleaning floating oil on water surface, purifying water bodies and the like, and is nontoxic and harmless and strong in applicability.

Description

technical field [0001] The invention relates to the technical fields of chemical engineering and functional materials, in particular to an oil-absorbing material and a preparation method thereof. Background technique [0002] In recent years, the frequent occurrence of offshore oil spill accidents and the massive discharge of industrial oily sewage have made the problem of oil-water separation become the focus of attention again. Oily sewage has a wide range of sources, such as oil spills, land mining of petroleum ore, food, textiles, machinery processing and many other industries discharge a large amount of oily sewage into the environment. Whether it is industrial oily sewage or domestic oily sewage, any discharge is harmful to production. The living environment has caused great pollution, and the resulting environmental problems cannot be ignored. There are many methods for the treatment of oily sewage. Traditional oil-water separation methods include gravity separation,...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08L67/04B01D17/022C02F1/40
Inventor 冯琳孙中雪薛众鑫陈雨宁卢飞刘娜高常锐张诗妍危岩
Owner TSINGHUA UNIV
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