| Durable superhydrophobic/superoleophilic PDMS sponges and their applications in selective oil absorption and in plugging oil leakages | |
Zhao, Xia1 ; Li, Lingxiao1,2; Li, Bucheng2; Zhang, Junping2; Wang, Aiqin2
| |
| 2014 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
 |
| ISSN | 2050-7488 |
| Volume | 2Issue:43Pages:18281-18287 |
| Abstract | 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. |
| Keyword | 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 |
| Indexed By | SCI ; SCIE |
| Language | 英语 |
| WOS Research Area | Chemistry ; Energy & Fuels ; Materials Science |
| WOS Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000344380000019 |
| Publisher | ROYAL SOC CHEMISTRY |
| EI Accession Number | 20144400137366 |
| EI Keywords | Silicones |
| EI Classification Number | 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 |
| Document Type | 期刊论文 |
| Identifier | https://ir.lut.edu.cn/handle/2XXMBERH/34548 |
| Collection | 石油化工学院 |
| Corresponding Author | Zhang, Junping |
| Affiliation | 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 |
| First Author Affilication | Coll Petrochem Engn |
| First Signature Affilication | Coll Petrochem Engn |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment