Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages

doi:10.1039/c4ta04406a

IR > 石油化工学院

	Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages
	Zhao, Xia1 ; Li, Lingxiao 1,2; Li, Bucheng 2; Zhang, Junping 2; Wang, Aiqin 2
	2014
发表期刊	JOURNAL OF MATERIALS CHEMISTRY A
ISSN	2050-7488
卷号	2 期号:43 页码:18281-18287
摘要	A facile method for preparing porous polydimethylsiloxane (PDMS) sponges is reported. The PDMS sponges are fabricated by the polymerization of the PDMS prepolymer and a curing agent in dimethicone using NaCl microparticles as the hard templates. The porous structure of the PDMS sponges is controllable simply by regulating the weight ratio of prepolymer to dimethicone and the size of the NaCl microparticles. The PDMS sponges feature high compressibility and stretchability, excellent superhydrophobicity/superoleophilicity, as well as high chemical and thermal stability. The PDMS sponge can completely recover its original shape even after 50 cycles of 90% strain. The elongation at breaking the sponge is as high as 97%. The PDMS sponge is superhydrophobic with a water contact angle of 151.5 degrees but can be easily wetted by oils. The sponge also exhibits excellent repellency to corrosive aqueous liquids. The flexibility and superhydrophobicity of the sponge remain unchanged even after keeping in liquid nitrogen or at 250 degrees C for 24 h. Long-term immersion in various organics has no obvious influence on superhydrophobicity, oil absorbency, or weight of the sponge. The PDMS sponge can selectively absorb a large amount of floating oils on the water surface and heavy oils under the water, and furthermore, is reusable. Moreover, the PDMS sponge swells quickly after the adsorption of oils, which makes it a promising material for plugging oil leakages.
关键词	Chemical stability Contact angle Crude oil Heavy oil production Leakage (fluid) Liquefied gases Microchannels Monomers Polydimethylsiloxane Sodium chloride Superhydrophobicity Aqueous liquids Hard templates Long-term immersions Micro-particles Oil absorbencies Polydimethylsiloxane PDMS Porous structures Water contact angle
DOI	10.1039/c4ta04406a
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000344380000019
出版者	ROYAL SOC CHEMISTRY
EI入藏号	20144400137366
EI主题词	Silicones
EI分类号	511.1 Oil Field Production Operations - 512.1 Petroleum Deposits - 801 Chemistry - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 931.2 Physical Properties of Gases, Liquids and Solids
引用统计	被引频次：236[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/34548
专题	石油化工学院
通讯作者	Zhang, Junping
作者单位	1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China
第一作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Zhao, Xia,Li, Lingxiao,Li, Bucheng,et al. Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(43):18281-18287.
APA	Zhao, Xia,Li, Lingxiao,Li, Bucheng,Zhang, Junping,&Wang, Aiqin.(2014).Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages.JOURNAL OF MATERIALS CHEMISTRY A,2(43),18281-18287.
MLA	Zhao, Xia,et al."Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages".JOURNAL OF MATERIALS CHEMISTRY A 2.43(2014):18281-18287.