Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition
Fibrous membranes of poly(trimethyl hexamethylene terephthalamide) (PA6(3)T) were fabricated by electrospinning and rendered hydrophobic by applying a conformal coating of poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) using initiated chemical vapor deposition (iCVD). A set of iCVD-treated electr...
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| Format: | Article |
| Language: | en_US |
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American Chemical Society (ACS)
2017
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| Online Access: | http://hdl.handle.net/1721.1/110950 https://orcid.org/0000-0002-8685-6891 https://orcid.org/0000-0001-6127-1056 https://orcid.org/0000-0001-8137-1732 |
| _version_ | 1826204436988428288 |
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| author | Guo, Fei Servi, Amelia T Liu, Andong Gleason, Karen K Rutledge, Gregory C |
| author2 | Massachusetts Institute of Technology. Department of Chemical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Chemical Engineering Guo, Fei Servi, Amelia T Liu, Andong Gleason, Karen K Rutledge, Gregory C |
| author_sort | Guo, Fei |
| collection | MIT |
| description | Fibrous membranes of poly(trimethyl hexamethylene terephthalamide) (PA6(3)T) were fabricated by electrospinning and rendered hydrophobic by applying a conformal coating of poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) using initiated chemical vapor deposition (iCVD). A set of iCVD-treated electrospun PA6(3)T fiber membranes with fiber diameters ranging from 0.25 to 1.8 μm were tested for desalination using the air gap membrane distillation configuration. Permeate fluxes of 2–11 kg/m²/h were observed for temperature differentials of 20–45 °C between the feed stream and condenser plate, with rejections in excess of 99.98%. The liquid entry pressure was observed to increase dramatically, from 15 to 373 kPa with reduction in fiber diameter. Contrary to expectation, for a given feed temperature the permeate flux was observed to increase for membranes of decreasing fiber diameter. The results for permeate flux and salt rejection show that it is possible to construct membranes for membrane distillation even from intrinsically hydrophilic materials after surface modification by iCVD and that the fiber diameter is shown to play an important role on the membrane distillation performance in terms of permeate flux, salt rejection, and liquid entry pressure. |
| first_indexed | 2024-09-23T12:55:02Z |
| format | Article |
| id | mit-1721.1/110950 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:55:02Z |
| publishDate | 2017 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/1109502022-09-28T10:56:00Z Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition Guo, Fei Servi, Amelia T Liu, Andong Gleason, Karen K Rutledge, Gregory C Massachusetts Institute of Technology. Department of Chemical Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Rutledge, Gregory C Guo, Fei Servi, Amelia T Liu, Andong Gleason, Karen K Rutledge, Gregory C Fibrous membranes of poly(trimethyl hexamethylene terephthalamide) (PA6(3)T) were fabricated by electrospinning and rendered hydrophobic by applying a conformal coating of poly(1H,1H,2H,2H-perfluorodecyl acrylate) (PPFDA) using initiated chemical vapor deposition (iCVD). A set of iCVD-treated electrospun PA6(3)T fiber membranes with fiber diameters ranging from 0.25 to 1.8 μm were tested for desalination using the air gap membrane distillation configuration. Permeate fluxes of 2–11 kg/m²/h were observed for temperature differentials of 20–45 °C between the feed stream and condenser plate, with rejections in excess of 99.98%. The liquid entry pressure was observed to increase dramatically, from 15 to 373 kPa with reduction in fiber diameter. Contrary to expectation, for a given feed temperature the permeate flux was observed to increase for membranes of decreasing fiber diameter. The results for permeate flux and salt rejection show that it is possible to construct membranes for membrane distillation even from intrinsically hydrophilic materials after surface modification by iCVD and that the fiber diameter is shown to play an important role on the membrane distillation performance in terms of permeate flux, salt rejection, and liquid entry pressure. 2017-08-15T14:49:48Z 2017-08-15T14:49:48Z 2015-04 2015-02 Article http://purl.org/eprint/type/JournalArticle 1944-8244 1944-8252 http://hdl.handle.net/1721.1/110950 Guo, Fei, et al. “Desalination by Membrane Distillation Using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition.” ACS Applied Materials & Interfaces 7, 15 (April 2015): 8225–8232 © 2015 American Chemical Society https://orcid.org/0000-0002-8685-6891 https://orcid.org/0000-0001-6127-1056 https://orcid.org/0000-0001-8137-1732 en_US http://dx.doi.org/10.1021/acsami.5b01197 ACS Applied Materials & Interfaces Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Rutledge via Erja Kajosalo |
| spellingShingle | Guo, Fei Servi, Amelia T Liu, Andong Gleason, Karen K Rutledge, Gregory C Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title | Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title_full | Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title_fullStr | Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title_full_unstemmed | Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title_short | Desalination by Membrane Distillation using Electrospun Polyamide Fiber Membranes with Surface Fluorination by Chemical Vapor Deposition |
| title_sort | desalination by membrane distillation using electrospun polyamide fiber membranes with surface fluorination by chemical vapor deposition |
| url | http://hdl.handle.net/1721.1/110950 https://orcid.org/0000-0002-8685-6891 https://orcid.org/0000-0001-6127-1056 https://orcid.org/0000-0001-8137-1732 |
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