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Super light 3D hierarchical nanocellulose aerogel foam with superior oil adsorption

2018; Elsevier BV; Volume: 536; Linguagem: Inglês

10.1016/j.jcis.2018.10.038

1095-7103

Hongyuan Zhang, Shangyun Lyu, Xiaomin Zhou, Hongbo Gu, Chao Ma, Chunhui Wang, Tao Ding, Qian Shao, Hu Liu, Zhanhu Guo,

Surface Modification and Superhydrophobicity

In this work, the concentration effect of both nanocellulose and sodium dodecylsulfate (SDS) on the fabrication of a super light 3D hierarchical framework adsorbent nanocellulose aerogel foam (NAF) is exploited through a high speed mechanical foaming and solvent-free method by adding SDS. The results show that the optimal concentration of nanocellulose and SDS for preparation of this 3D NAF/SDS is 0.4 and 0.2 wt%, accordingly. By utilizing unique gridding framework of NAF/SDS, a low density of 1.50 mg cm-3 and high adsorption capacity of 206.79, 194.75 and 145.20 g g-1 towards cyclohexane, ethyl acetate, and vacuum pump oil, accordingly, are achieved in the as-prepared NAF/SDS, which is much higher than that of conventional nanocellulose aerogel (NA) (52.07, 81.12 and 34.52 g g-1, respectively). The results illustrate that this NAF/SDS is a promising candidate for preparing 3D hierarchical network structure from natural polymer cellulose in an environmental control for oil adsorption.