Surface Wetting-Driven Separation of Surfactant-Stabilized Water-Oil Emulsions
文献类型：期刊论文
| 作者 | Zhang, Qian1,2; Li, Lei1; Li, Yanxiang1; Cao, Lixia1; Yang, Chuanfang1 |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2018-05-15 |
| 卷号 | 34期号:19页码:5505-5516 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/acs.langmuir.7b04248 |
| 英文摘要 | Four fluorocarbon polymers including polytetrafluoroethylene and polyvinylidene fluoride were coated on a stainless steel felt to separate emulsified water droplets from ultralow sulfur diesel (ULSD) fuels. The original fuel treated with clay to remove additives was additized again with four known surfactants including pentaerythrityoleate, (octadecadienoic acid) dipolymer, (octadecadienoic acid) tripolymer, and monoolein individually. The different surfactants adsorbed on the fuel water interface reduce the interfacial intension with different intensities. The separation efficiency at various surfactant concentrations was used to evaluate the coalescence effect exerted by these coatings. It was found the separation was both surfactant- and coating-dependent. A fluoro-polyurethane coating (FC1) stood out to counteract the adverse effect of all the surfactants. Solid free energy was then measured using acid base and Kaelble-Uy adhesion theories for all the coatings, but its correlation with coalescence was not found at all. Coating aging in surfactant-additized fuel on the coating's water wettability was also examined to better understand how historical wetting affects separation. A tumbled model for fluorocarbons was identified that well-explained the continuous decline of the water contact angle on the FC1 coating in fuel. Subject to the challenge of the foreign environment, the fluoroalkyl chains of the polymer tilt to expose the carbonyl groups underneath, resulting in favored coalescence separation in the presence of surfactants. |
| WOS关键词 | MOLECULAR AGGREGATION STRUCTURE ; ACRYLATE) THIN-FILMS ; GLASS-FIBER MEDIA ; FREE-ENERGY ; COALESCENCE ; WETTABILITY ; INTERFACE |
| 资助项目 | National Natural Science Foundation of China[21476237] ; National Key Research and Development Program of China[2017YFB0308002] |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000432417700018 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/24642]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yang, Chuanfang |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Qian,Li, Lei,Li, Yanxiang,et al. Surface Wetting-Driven Separation of Surfactant-Stabilized Water-Oil Emulsions[J]. LANGMUIR,2018,34(19):5505-5516. |
| APA | Zhang, Qian,Li, Lei,Li, Yanxiang,Cao, Lixia,&Yang, Chuanfang.(2018).Surface Wetting-Driven Separation of Surfactant-Stabilized Water-Oil Emulsions.LANGMUIR,34(19),5505-5516. |
| MLA | Zhang, Qian,et al."Surface Wetting-Driven Separation of Surfactant-Stabilized Water-Oil Emulsions".LANGMUIR 34.19(2018):5505-5516. |
入库方式： OAI收割
来源：过程工程研究所
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