Janus Polyvinylidene Fluoride Membrane with Extremely Opposite Wetting Surfaces via One Single-Step Unidirectional Segregation Strategy
文献类型：期刊论文
| 作者 | Lin, Haibo; Tang, Chuyang Y.; Li, Tiantian; Liu, Fu; Zhang, Shaofei; Wang, Jianqiang |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2018 |
| 卷号 | 10期号:29页码:24947-24954 |
| 关键词 | In-water Emulsions Oil/water Separation Efficient Separation Pickering Emulsions Oil Distillation Wettability Nanosheets Fabrics |
| 英文摘要 | Janus membranes with asymmetric wettability have attracted intense attention in oil/water separation, membrane distillation, liquid/fog collection, liquid diode, etc. Facile manipulation of the paradoxical wetting/antiwetting property on opposite surfaces of a 2D membrane is challenging. Different from most postmodification methods, herein, we propose one single-step unidirectional segregation strategy to fabricate a polymeric Janus membrane with extremely opposite wetting surfaces showing almost a 150 degrees contact angle difference for the first time. We achieved the unidirectional segregation of the hydrophilic copolymer poly(vinylpyrrolidone-vinyltriethoxysilane) in a polyvinylidene fluoride (PVDF) membrane during phase separation. A glycerol coating on the nonwoven fabric support locally limited the phase separation on the bottom surface, blocked the segregation of hydrophilic copolymer, and promoted the segregation to the top surface. Working collaboratively with the asymmetric micro-/nanostructure on both surfaces, the resulting Janus membrane exhibited a superhydrophilic top surface and a superhydrophobic bottom surface. The Janus PVDF membrane showed switchable separation performance and high separation efficiency for both oil-in-water emulsions and water-in-oil emulsions because of its anisotropic wettability compared with solely hydrophobic or hydrophilic PVDF membranes. |
| 学科主题 | Engineering ; Physics |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/17298]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Lin, Haibo,Tang, Chuyang Y.,Li, Tiantian,et al. Janus Polyvinylidene Fluoride Membrane with Extremely Opposite Wetting Surfaces via One Single-Step Unidirectional Segregation Strategy[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(29):24947-24954. |
| APA | Lin, Haibo,Tang, Chuyang Y.,Li, Tiantian,Liu, Fu,Zhang, Shaofei,&Wang, Jianqiang.(2018).Janus Polyvinylidene Fluoride Membrane with Extremely Opposite Wetting Surfaces via One Single-Step Unidirectional Segregation Strategy.ACS APPLIED MATERIALS & INTERFACES,10(29),24947-24954. |
| MLA | Lin, Haibo,et al."Janus Polyvinylidene Fluoride Membrane with Extremely Opposite Wetting Surfaces via One Single-Step Unidirectional Segregation Strategy".ACS APPLIED MATERIALS & INTERFACES 10.29(2018):24947-24954. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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