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Preparation and Oil Absorption Properties of Hydrophobic and Oil-philic Nanocellulose Aerogel
Received:February 06, 2022  
DOI：10.11980/j.issn.0254-508X.2023.02.002
Key Words:nanocellulose  aerogel  stearoyl chloride  hydrophobic  oil absorption  recyclability
Fund Project:浙江省“尖兵”“领雁”研发攻关计划项目（2023C01195）；衢州市科技计划项目（2021K48）。
Author NameAffiliationPostcode
HAN Yingying College of Environment and Resources， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZHANG Feiyang College of Environment and Resources， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
WU Jinhan College of Environment and Resources， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
YAN Zhongyu College of Environment and Resources， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
ZHAO Huifang* College of Environment and Resources， Zhejiang University of Science and Technology， Hangzhou， Zhejiang Province， 310023 310023
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Abstract:Nanocellulose （CNF， ECNF， and TCNF） prepared from softwood via different methods were used as the raw materials in this study. The aerogels were prepared by freeze drying and modified by impregnating with stearoyl chloride （SAC） solution. The results showed that particle size and charge distribution of TCNF were more uniform. The SAC modification had not changed the characteristics of lightweight and porous with porosity of 99.4%. The modified nanocellulose aerogels showed excellent hydrophobicity and great oil absorption ability. The S-ECNFA aerogel hydrophobic modified by SAC had the best hydrophobicity with the contact angle of 151.6°. S-TCNFA had the greatest oil absorption capacity with the edible oil adsorption capacity of 48.96 g/g aerogel， and had good recyclability. After 5 times reused， the adsorption capacity towards edible oil of S-TCNFA could still reach 60.8% of the initial adsorption capacity.
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