A Novel Freeze-Drying-Free Strategy to Fabricate a Biobased Tough Aerogel for Separation of Oil/Water Mixtures

Journal of Agricultural and Food Chemistry
Kai LiHong Zhang

Abstract

Renewable biobased porous aerogels with excellent biodegradability have versatile applications in oil/water separation, catalysis, and tissue engineering. However, processing of the porous matrix is challenging due to the high energy consumption and low efficiency from the fabrication procedures, such as freeze-drying or critical-drying of the hydrogel, which need to be improved. In the present study, natural amphiphilic oligomer shellac secreted by the lac Kerriar Lacca insect was employed to fabricate the porous template, which could self-assemble into a continuous rigid network with a hydrophobic core. Because of the hydrophobic core, the hydrated shellac network could be directly dried without collapse by the ambient air. The air-drying shellac aerogel presented a great mechanical property. The silane-coating treatment converted this shellac aerogel into a hydrophobic material that absorbed various organic solvents and oils. Also, this silane-coated shellac aerogel also could remove organic solvent or oil from the bottom or surface of the water. Notably, the saturable aerogel rapidly degraded in pH 14 and released the solvent absorbed by this matrix. This porous and hydrophobic matrix also could be applied as a filter that ...Continue Reading

References

Nov 26, 2010·Journal of Agricultural and Food Chemistry·Manee Luangtana-ananSontaya Limmatvapirat
Oct 28, 2014·ACS Applied Materials & Interfaces·Bo DuanLina Zhang
Nov 27, 2014·Angewandte Chemie·Zonglin ChuStefan Seeger
Dec 15, 2016·Journal of Agricultural and Food Chemistry·Qingming LuoYanlin Sun
Apr 10, 2018·Carbohydrate Polymers·Patchiya PhanthongGuoqing Guan
Jun 8, 2018·Journal of Agricultural and Food Chemistry·Jianan GaoKai Li
Dec 5, 2019·ACS Applied Materials & Interfaces·Dong LiJin Huang

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