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题名: Super-hydrophobic graphene coated polyurethane (GN@PU) sponge with great oil-water separation performance
作者: Zhang, Xiaotan;  Liu, Dongyan;  Ma, Yuling;  Nie, Jing;  Sui, Guoxin
发表日期: 2017-11-15
摘要: The graphene/polyurethane (GN@PU) sponge was prepared via simple dip-coating PU sponges in graphene aqueous suspension containing cellulose nanowhiskers (CNWs), where CNWs played a vital role to facilitate the uniform graphene sheets coated on the skeletons of polyurethane sponge (PU). The super-hydrophobic GN@PU sponge was obtained by optimizing the ratio of GN and CNWs to choose the final coating suspensions of GN/CNWs mixture or pure graphene. The GN@PU sponge showed densely packed graphene sheets, contributing super-hydrophobicity to the sponge with water contact angle of 152. and a large lubricating oil absorption value of 31 g g(-1). The elasticity, mechanical durability, thermal and chemical stability were all found to be improved after coating with the thin GN layers. Moreover, the GN@PU sponges possess outstanding recyclability and stability since no decline in absorption efficiency was observed after more than 100 cycles. (C) 2017 Elsevier B.V. All rights reserved.
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Recommended Citation:
Zhang, Xiaotan,Liu, Dongyan,Ma, Yuling,et al. Super-hydrophobic Graphene Coated Polyurethane (gn@pu) Sponge With Great Oil-water Separation Performance[J]. Elsevier Science Bv,2017,422:116-124.

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