一种超亲水木材基乳液分离膜材料及其制备方法和应用
By constructing a dense regenerated cellulose layer on a wood substrate, the problems of oil-water separation membrane materials being easily contaminated by oil and having excessively large pore structures in existing technologies are solved, achieving efficient and biodegradable emulsified oil separation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING GREEN MFG IND INNOVATION RES INST
- Filing Date
- 2023-12-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing superhydrophobic/oleophilic oil-water separation membrane materials are easily contaminated by oil in practical applications, and are not suitable for gravity-driven separation, making it difficult to effectively remove emulsified oil. Furthermore, the pore structure of natural wood is too large, making it difficult to effectively retain small-sized emulsified oil.
Using porous wood substrate material, a dense regenerated cellulose layer is constructed on the wood surface through the dissolution and regeneration of plant cellulose, forming a superhydrophilic/underwater superoleophobic surface wetting property. Combined with hydrogen bonding, a tightly bound membrane structure is formed, and the pore structure is controlled to achieve high throughput and high separation efficiency.
It achieves effective retention and separation of small-sized emulsified oil droplets, the membrane structure is not easily contaminated by oil, the preparation process is green and environmentally friendly, meets the needs of sustainable development, and is low in cost and biodegradable.
Smart Images
Figure CN117771978B_ABST