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| Preparation and Performance Research of Magnetic Hydrophobic Cellulose Nanofibril Aerogel |
| Received:January 05, 2021 |
| DOI：10.11981/j.issn.1000-6842.2021.04.33 |
| Key Words:cellulose nanofibril;hexadecyltrimethoxysilane;Fe3O4 nanoparticles;aerogel |
| Fund Project:天津市教委科研计划资助项目（2018KJ098）。 |
| Author Name | Affiliation | Postcode | | HE Xinghua* | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | LUAN Yunhao | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | LI Yuhang | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | LIU Wanyi | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | WANG Cong | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | CAO Hui | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | LIU Pengtao | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | LIU Zhong | Tianjin Key Lab of Pulp and Paper， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 |
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| Abstract: |
| In this study， cellulose nanofibril （CNF） aerogel was prepared using TEMPO-oxidized CNF as raw material， and then modified by hexadecyltrimethoxysilane （HDTMS） and Fe3O4 nanoparticles to obtain magnetic hydrophobic CNF aerogel， the hydrophobicity， magnetism， adsorption， and other properties of which were characterized. The results indicated that the crosslinking agent N，N-methylenebisacrylamide （MBA） had a significant effect on the structure of the aerogel， which could increase the bonding strength between the filaments， rendering a more stable， unbreakable aerogel structure. The density and porosity of the prepared aerogel material reached 0.015 g/cm3 and 99.02%， respectively， and the water contact angle of the aerogel could reach 133°， showing excellent superhydrophobicity， and its adsorption capacity could reach 145 g/g （to motor oil）. Moreover， the addition of Fe3O4 nanoparticles endowed the aerogel with better magnetic response performance， which is beneficial to its recovery. |
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