Large-area PVDF membranes with through-thickness porosity prepared by uni-directional freezing
DC Field | Value | Language |
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dc.contributor.author | Kim, Byoung Soo | - |
dc.contributor.author | Lee, Min Kyung | - |
dc.contributor.author | Lee, Jonghwi | - |
dc.date.available | 2019-03-09T02:36:46Z | - |
dc.date.issued | 2013-02 | - |
dc.identifier.issn | 1598-5032 | - |
dc.identifier.issn | 2092-7673 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/14898 | - |
dc.description.abstract | An ideal microporous membrane has uniformity through-thickness pores with low tortuosity. In this study, a novel uni-directional freezing method to manufacture poly(vinylidene fluoride) (PVDF) membranes with ideal pore structures is proposed. Crack-free large-area membranes can be produced by inducing the directional growth of cylindrical solvent crystals at a controlled freezing speed and removing them by freeze drying or solvent etching. These membranes are uniform and are regularly arrayed through-thickness pores and relatively strong mechanical properties (modulus=75 MPa and tensile strain to break=0.1). Filterability tests where membranes are produced via freeze drying reveal a fast average filtration rate compared to commercial membranes. In addition, Xray diffraction and infrared spectroscopy results confirmed that uni-directional freezing increased the beta phase content, possibly by inducing polymer chain alignment through directional solvent crystal growth. The obtained findings show that the uni-directional freezing method is a simple and effective process to control through-thickness pore structures. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | POLYMER SOC KOREA | - |
dc.title | Large-area PVDF membranes with through-thickness porosity prepared by uni-directional freezing | - |
dc.type | Article | - |
dc.identifier.doi | 10.1007/s13233-013-1020-y | - |
dc.identifier.bibliographicCitation | MACROMOLECULAR RESEARCH, v.21, no.2, pp 194 - 201 | - |
dc.identifier.kciid | ART001742292 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000315449700012 | - |
dc.identifier.scopusid | 2-s2.0-84878482864 | - |
dc.citation.endPage | 201 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 194 | - |
dc.citation.title | MACROMOLECULAR RESEARCH | - |
dc.citation.volume | 21 | - |
dc.type.docType | Article | - |
dc.publisher.location | 대한민국 | - |
dc.subject.keywordAuthor | porous membrane | - |
dc.subject.keywordAuthor | through-thick porosity | - |
dc.subject.keywordAuthor | poly(vinylidene fluoride) (PVDF) | - |
dc.subject.keywordAuthor | freeze-drying | - |
dc.subject.keywordAuthor | directional freezing | - |
dc.subject.keywordPlus | POLY(VINYLIDENE FLUORIDE) | - |
dc.subject.keywordPlus | POLYVINYLIDENE FLUORIDE | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | MICROPOROUS MEMBRANE | - |
dc.subject.keywordPlus | POLYMER ELECTROLYTES | - |
dc.subject.keywordPlus | SOL-GEL | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | MORPHOLOGY | - |
dc.subject.keywordPlus | SCAFFOLDS | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
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