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Nanocellulose-based lightweight porous materials: A review
Yan Sun1, Youlu Chu1, Weibing Wu2
1Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology, Nanjing Forestry University, Nanjing 210037, China.
Carbohydrate Polymers
|January 13, 2021
Summary
This review explores nanocellulose-based lightweight porous materials, highlighting their preparation via gelation and drying. These versatile materials show promise in adsorption, biomedicine, and energy storage applications.
Area of Science:
- Materials Science
- Nanotechnology
- Biomaterials Engineering
Background:
- Nanocellulose offers unique properties like high surface area and mechanical strength, making it ideal for lightweight porous materials.
- Recent years have seen increased interest and application of nanocellulose in advanced material development.
- Its renewability and biodegradability align with sustainable material design principles.
Purpose of the Study:
- To review preparation methods for nanocellulose-based lightweight porous materials.
- To analyze the impact of gelation and drying processes on material structure and properties.
- To summarize diverse applications of these advanced porous materials.
Main Methods:
- Gelation processes, including physical and chemical crosslinking mechanisms.
- Drying techniques: freeze-drying, supercritical drying, and evaporation drying.
- Characterization of porous structures and resulting material properties.
Main Results:
- Preparation involves gelation followed by controlled drying, with freeze, supercritical, and evaporation methods yielding distinct characteristics.
- Crosslinking strategies significantly influence the final porous architecture and performance.
- Drying methods critically affect pore structure, surface area, and mechanical integrity.
Conclusions:
- Nanocellulose-based lightweight porous materials can be tailored through precise control of gelation and drying.
- These materials exhibit broad applicability across adsorption, biomedicine, energy, insulation, and catalysis.
- Further research into optimizing preparation and exploring novel applications is warranted.
