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| Preparation and Oil Absorption Properties of Superhydrophobic Lipophilic SiO2/Cellulose Composite Aerogels |
| Received:February 13, 2025 Revised:March 06, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.07.004 |
| Key Words:aerogel cellulose freeze-dried superhydrophobic oil absorption |
| Author Name | Affiliation | Postcode | | JIANG Songtao* | Huaxin Cement Co., Ltd., Wuhan, Hubei Province, 430073
Hubei Key Lab of Green Low-Carbon Cement, Wuhan, Hubei Province, 430073 | 430073 | | YU Songbai | Huaxin Cement Co., Ltd., Wuhan, Hubei Province, 430073
Hubei Key Lab of Green Low-Carbon Cement, Wuhan, Hubei Province, 430073 | 430073 | | LI Yeqing | Huaxin Cement Co., Ltd., Wuhan, Hubei Province, 430073
Hubei Key Lab of Green Low-Carbon Cement, Wuhan, Hubei Province, 430073 | 430073 | | WANG Yunyao* | Huaxin Cement Co., Ltd., Wuhan, Hubei Province, 430073
Hubei Key Lab of Green Low-Carbon Cement, Wuhan, Hubei Province, 430073 | 430073 |
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| Abstract:Using the dissolution regeneration method， cellulose hydrogel was prepared. Under alkaline as a catalyst， the hydrolysis-condensation rate of tetraethyl orthosilicate （TEOS） was controlled to regulate the size of the prepared SiO2 particles， followed by the composite of cellulose and SiO2， which was then freeze-dried to obtain a SiO2/cellulose composite aerogel. After hydrophobic modification with alkyl siloxane， a superhydrophobic oleophilic SiO2/cellulose composite aerogel was prepared. The results indicated successful SiO2 incorporation into the cellulose aerogel， and the prepared SiO2/cellulose composite aerogel had a porous structure. At a pH value of 10， SiO2 sphere had a size range of 50~200 nm， and SiO2/cellulose composite aerogel had a static contact angle of 158.9° and a roll-off angle of 3.2°， of which oil absorption capacity was 12.8 times its own weight. |
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