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	Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets
	Zhang, XT; Liu, DY; Sui, GX; Sui, GX (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
刊名	ADVANCED MATERIALS INTERFACES
	2018-01-23
卷号	5期号:2页码:-
关键词	Organic-solvents Surfaces Films Wettability Oil Superhydrophobicity Aerogel Robust Oxide Water
ISSN号	2196-7350
英文摘要	Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil. It is generally accepted that graphene-based assemblies are hydrophobic. Here, novel superamphiphilic polyurethane (PU) foams by the synergetic effect of cellulose nanowhiskers (CNWs) and graphene nanosheets (GNs) are reported. This process involves the creation of CNWs' base coating on the surface of PU network prior to GN coatings to obtain superamphiphilic surfaces by the simple dip-coating method. Wetting behaviors of the foams start to turn from hydrophobicity into superamphiphilicity by increasing the concentration of the CNWs up to 0.5 wt%. The hydrophobicity recovers when the concentration of CNWs reaches 1.0 wt%. The superamphiphilic foam (CNWs' concentration is 0.75 wt%) exhibits high storage capacity for water and various organic solvents up to 22-24 times of its own weight. Moreover, the coated foams can be reused for absorbing liquids for more than 20 cycles without losing their superamphiphilicity, exhibiting good reusability and durability. The discovery of this superamphiphilic foam is of great significance for the development of superwetting materials and finding their applications in oil emulsions purifying and catalyst anchoring fields.; Superamphiphilic materials are attracting significant attention because of their unique affinity to both water and oil. It is generally accepted that graphene-based assemblies are hydrophobic. Here, novel superamphiphilic polyurethane (PU) foams by the synergetic effect of cellulose nanowhiskers (CNWs) and graphene nanosheets (GNs) are reported. This process involves the creation of CNWs' base coating on the surface of PU network prior to GN coatings to obtain superamphiphilic surfaces by the simple dip-coating method. Wetting behaviors of the foams start to turn from hydrophobicity into superamphiphilicity by increasing the concentration of the CNWs up to 0.5 wt%. The hydrophobicity recovers when the concentration of CNWs reaches 1.0 wt%. The superamphiphilic foam (CNWs' concentration is 0.75 wt%) exhibits high storage capacity for water and various organic solvents up to 22-24 times of its own weight. Moreover, the coated foams can be reused for absorbing liquids for more than 20 cycles without losing their superamphiphilicity, exhibiting good reusability and durability. The discovery of this superamphiphilic foam is of great significance for the development of superwetting materials and finding their applications in oil emulsions purifying and catalyst anchoring fields.
学科主题	Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary
语种	英语
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79571]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sui, GX (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Zhang, XT,Liu, DY,Sui, GX,et al. Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets[J]. ADVANCED MATERIALS INTERFACES,2018,5(2):-.
APA	Zhang, XT,Liu, DY,Sui, GX,&Sui, GX .(2018).Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets.ADVANCED MATERIALS INTERFACES,5(2),-.
MLA	Zhang, XT,et al."Superamphiphilic Polyurethane Foams Synergized from Cellulose Nanowhiskers and Graphene Nanoplatelets".ADVANCED MATERIALS INTERFACES 5.2(2018):-.

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