蒋松涛,余松柏,李叶青,王云摇.超疏水SiO2/纤维素复合气凝胶的制备及吸油性能研究[J].中国造纸,2025,44(7):33-38 本文二维码信息
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超疏水SiO2/纤维素复合气凝胶的制备及吸油性能研究
Preparation and Oil Absorption Properties of Superhydrophobic Lipophilic SiO2/Cellulose Composite Aerogels
投稿时间：2025-02-13  修订日期：2025-03-06
DOI：10.11980/j.issn.0254-508X.2025.07.004
关键词:  气凝胶  纤维素  冷冻干燥  超疏水  吸油
Key Words:aerogel  cellulose  freeze-dried  superhydrophobic  oil absorption
基金项目:
作者单位邮编
蒋松涛* 华新水泥股份有限公司，湖北武汉，430073
绿色低碳水泥湖北省重点实验室， 湖北武汉，430073 		430073
余松柏 华新水泥股份有限公司，湖北武汉，430073
绿色低碳水泥湖北省重点实验室， 湖北武汉，430073 		430073
李叶青 华新水泥股份有限公司，湖北武汉，430073
绿色低碳水泥湖北省重点实验室， 湖北武汉，430073 		430073
王云摇* 华新水泥股份有限公司，湖北武汉，430073
绿色低碳水泥湖北省重点实验室， 湖北武汉，430073 		430073
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摘要:利用溶解再生方法制备纤维素水凝胶，在碱作为催化剂的条件下，通过对正硅酸乙酯（TEOS）水解-缩聚速率控制，调控生成的SiO2粒径尺寸，并实现纤维素、SiO2的复合，经冷冻干燥制得SiO2/纤维素复合气凝胶，用烷基硅氧烷进行疏水修饰后，制得超疏水SiO2/纤维素复合气凝胶。结果表明，纤维素气凝胶成功与SiO2复合，制备的超疏水SiO2/纤维素复合气凝胶呈现出多孔结构，当pH值为10时，制得的SiO2球体粒径50~200 nm，SiO2/纤维素复合气凝胶的静态接触角158.9°，滚动角3.2°，其吸油能力可达本身质量的12.8倍。
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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