| Preparation of poly(vinylidene fluoride) (PVDF) dopamine-modified sodium montmorillonite (D-MMT) composite membrane with the enhanced permeability and the mechanical property | |
Cai, Ying; Lu, Jian; Wu, Jun
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| 2019-02 | |
| 发表期刊 | DESALINATION AND WATER TREATMENT
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| ISSN | 1944-3994 |
| 卷号 | 141页码:95-105 |
| 摘要 | Dopamine modified sodium montmorillonite (D-MMT) was firstly used as the inorganic filler of polyvinylidene fluoride (PVDF) composite membranes via nonsolvent induced phase separation (NIPS) method. The surface modification sodium-montmorillonite (Na-MMT) was characterized by Fourier transform infrared (FTIR), thermo gravimetric analysis (TGA), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The X-ray photoelectron spectroscopic (XPS) spectra and elemental mapping demonstrated that the D-MMT was incorporation and uniformly dispersed into PVDF composite membranes. Results showed that the incorporation of D-MMT into PVDF composite membranes significantly improved the mechanical property and hydrophilicity at a low D-MMT loading. The addition of 0.8 wt% D-MMT not only altered the morphology and structure of membranes, but also drastically increased tensile strength from 1.98 to 2.63 Mpa while elongation at break increased from 58% to 126%. In addition, the pure water flux of membranes increased by almost 50% from 15 to 22 L m(-2) h(-1) when 0.8 wt% D-MMT was added. These results suggested that the surface modification of Na-MMT played an important role inimproving mechanical properties and pure water flux of PVDF composite membranes. |
| DOI | 10.5004/dwt.2019.23461 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/34010 |
| 专题 | 盐湖地质与环境实验室 中国科学院青海盐湖研究所 |
| 推荐引用方式 GB/T 7714 | Cai, Ying,Lu, Jian,Wu, Jun. Preparation of poly(vinylidene fluoride) (PVDF) dopamine-modified sodium montmorillonite (D-MMT) composite membrane with the enhanced permeability and the mechanical property[J]. DESALINATION AND WATER TREATMENT,2019,141:95-105. |
| APA | Cai, Ying,Lu, Jian,&Wu, Jun.(2019).Preparation of poly(vinylidene fluoride) (PVDF) dopamine-modified sodium montmorillonite (D-MMT) composite membrane with the enhanced permeability and the mechanical property.DESALINATION AND WATER TREATMENT,141,95-105. |
| MLA | Cai, Ying,et al."Preparation of poly(vinylidene fluoride) (PVDF) dopamine-modified sodium montmorillonite (D-MMT) composite membrane with the enhanced permeability and the mechanical property".DESALINATION AND WATER TREATMENT 141(2019):95-105. |
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