Preparation method of ultralight and hydrophobic nano fibrillated cellulose aerogel with high oil absorption
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NORTHEAST FORESTRY UNIVERSITY
- Publication Date
- 2014-04-30
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a preparation method of cellulose airgel. Background technique
[0002] Oil spills have brought heavy disasters to our ecological environment. Oil flows into the sea, and some toxic substances contained in it flow into the biological chain, and its poisonous effect is from lower algae to higher animals and plants. Moreover, oil spills also cause immeasurable harm to groundwater, marine organisms, and seawater environments. At present, the method favored by people to deal with oil spills is to use some special, cheap, highly absorbent, hydrophobic and lipophilic adsorbent material to absorb oil from the oil-water mixture and obtain relatively pure oil by simple mechanical extrusion. Oil, to achieve oil-water separation. Cellulose aerogels, as the new third-generation aerogels, have both the high porosity, high specific surface area, low sound velocity, low optical refractive index, and low dielectric strength of silicon aerog...