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| Content Provider | Springer Nature Link |
|---|---|
| Author | Lee, Jinwon Park, Bumjin Kim, Jongpyo Park, Seung Bin |
| Copyright Year | 2015 |
| Abstract | Poly(vinylidene fluoride) (PVDF) dual-layer hollow fiber membranes with porous layers were successfully prepared by simultaneous spinning of thermally induced phase separation (TIPS) and non-solvent induced phase separation (NIPS) through a triple orifice spinneret (TOS). The support layer was produced using a TIPS system from PVDF, with γ-butyrolactone (GBL) as the diluent. The prepared membranes were evaluated by analysis of their morphology, water flux, and tensile strength. The NIPS dope solution plays an important role in suppressing the formation of the dense top layer and forms a porous coating layer on the TIPS support layer. In addition, the effect of various non-solvent additives (polyvinylpyrrolidone (PVP), lithium chloride (LiCl), ethylene glycol (EG), and glycerol (Gly)) employed in the TIPS process was investigated. A specific morphology, namely, micro-sized holes in the spherulite structure, was observed on addition of specific mixtures of the non-solvent additives PVP, LiCl, and glycerol. Controlling the amount of added glycerol can help tune the dimensions of the holes. Because of this structure, the water flux of the membrane significantly increased, while a slight decrease in the tensile strength was observed. The specific morphology (hole structure) was very effective in controlling the porosity of the support layer on PVDF dual-layer hollow fiber membranes. |
| Starting Page | 291 |
| Ending Page | 299 |
| Page Count | 9 |
| File Format | |
| ISSN | 15985032 |
| Journal | Macromolecular Research |
| Volume Number | 23 |
| Issue Number | 3 |
| e-ISSN | 20927673 |
| Language | English |
| Publisher | The Polymer Society of Korea |
| Publisher Date | 2015-02-19 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | poly(vinylidene fluoride) dual-layer hollow fiber membrane thermally induced phase separation non-solvent induced phase separation non-solvent additives Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Physical Chemistry Characterization and Evaluation of Materials Nanochemistry Nanotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Chemical Engineering Polymers and Plastics |
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