Highly Hydrophobic Cellulose Nanofiber/Polylactic Acid Composite Aerogels by Pickering Emulsion Strategy

被引：0
|
作者：
Xie P. [1 ]
Xie H. [1 ]
Li S. [1 ]
Zhang C. [1 ]
Li M. [1 ]
Wang Y. [1 ]
Liu H. [1 ]
机构：
[1] Guangxi Key Laboratory of Optical and Electronic Materials and Devices, College of Material Science & Engineering, Guilin University of Technology, Guilin
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2022年 / 38卷 / 06期
关键词：
Cellulose nanofiber; Composite aerogel; Oil/water separation; Pickering emulsion;
D O I：
10.16865/j.cnki.1000-7555.2022.0129
中图分类号：
学科分类号：
摘要：
With the worsening of the oil-product pollution problem, oil-water separation has attracted more and more attention in recent years. In this study, a highly hydrophobic cellulose nanofiber (CNF)/polylactic acid (PLA) aerogel as effective oil absorbent was fabricated from Pickering emulsion gel stabilized by CNF with PLA/1, 2- dichloroethane droplets, followed by simple chemical graft of polymethylhydrosiloxane (PMHS) onto the surface of the CNF/PLA composite aerogel. It is worth mentioning that in this study, polymers were directly used as silane modifier and further explored the hydrophobic mechanism of PMHS modified CNF/PLA aerogels. The resulting hydrophobic CNF/PLA composite aerogels (HCPCA) still keep their original porous structure and have excellent hydrophobicity. Their water contact angle is increased with the increased dosage of PMHS, and the water contact angle of the HCPCA- 3 reaches up to 141.0°. In the meantime, the composite aerogel has excellent oil/water selectivity and relatively high absorption capacity (132 times its own mass) to various oils and chemical solvents. These studies demonstrate that the material is viable candidate for use in oil- water separation and environmental protection. © 2022, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：125 / 131
页数：6
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