Influence of lithium flouride additive on polyethersulfone membranes
The objective of this research is to investigate the influence of the additive lithium fluoride anhydrous (LiF) concentration on the performance of polyethersulfone (PES) membrane. Various concentration of LiF has been mixed with PES in the range of 1-5% . This distinctive series of dope formulation...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2007
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| Online Access: | http://eprints.utm.my/5503/ http://eprints.utm.my/5503/1/AniIdris2007_InfluenceOfLithiumFlourideAdditive.pdf |
| _version_ | 1848891068811051008 |
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| author | Idris, Ani Ahmed, Iqbal Nihal Ah., Ansari Akhlaque Ah. Mohd Noor, Nur Diana |
| author_facet | Idris, Ani Ahmed, Iqbal Nihal Ah., Ansari Akhlaque Ah. Mohd Noor, Nur Diana |
| author_sort | Idris, Ani |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | The objective of this research is to investigate the influence of the additive lithium fluoride anhydrous (LiF) concentration on the performance of polyethersulfone (PES) membrane. Various concentration of LiF has been mixed with PES in the range of 1-5% . This distinctive series of dope formulations of PES and LiF was prepared using N,N-dimethylformamide (DMF) as solvent. Viscosities of the dope solution were measured and the performances of the PES membranes were evaluated in terms of polyethylene glycol (PEG) separation and its molecular weight cut off (MWCO) is determined. The results indicated that the additive LiF showed significant effect in reducing viscosity of dope solution by 2.5-5 times. Its presence has improved both the permeation and solute rejection rate with the best concentration kept to less than 3% by weight. Dope solutions containing 1%-3% were discovered to have highest rejection rate with MWCO at approximately 8.1 kDa, 7.1 kDa and 8.45 kDa respectively with reasonably flux rates. |
| first_indexed | 2025-11-15T20:52:06Z |
| format | Conference or Workshop Item |
| id | utm-5503 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:52:06Z |
| publishDate | 2007 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-55032017-08-02T07:15:04Z http://eprints.utm.my/5503/ Influence of lithium flouride additive on polyethersulfone membranes Idris, Ani Ahmed, Iqbal Nihal Ah., Ansari Akhlaque Ah. Mohd Noor, Nur Diana T Technology (General) The objective of this research is to investigate the influence of the additive lithium fluoride anhydrous (LiF) concentration on the performance of polyethersulfone (PES) membrane. Various concentration of LiF has been mixed with PES in the range of 1-5% . This distinctive series of dope formulations of PES and LiF was prepared using N,N-dimethylformamide (DMF) as solvent. Viscosities of the dope solution were measured and the performances of the PES membranes were evaluated in terms of polyethylene glycol (PEG) separation and its molecular weight cut off (MWCO) is determined. The results indicated that the additive LiF showed significant effect in reducing viscosity of dope solution by 2.5-5 times. Its presence has improved both the permeation and solute rejection rate with the best concentration kept to less than 3% by weight. Dope solutions containing 1%-3% were discovered to have highest rejection rate with MWCO at approximately 8.1 kDa, 7.1 kDa and 8.45 kDa respectively with reasonably flux rates. 2007 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/5503/1/AniIdris2007_InfluenceOfLithiumFlourideAdditive.pdf Idris, Ani and Ahmed, Iqbal and Nihal Ah., Ansari Akhlaque Ah. and Mohd Noor, Nur Diana (2007) Influence of lithium flouride additive on polyethersulfone membranes. In: 14th Regional Symposium On Chemical Engineering 2007, December 4-5, 2007, Melia Purosani Hotel, Yogyakarta, Indonesia. |
| spellingShingle | T Technology (General) Idris, Ani Ahmed, Iqbal Nihal Ah., Ansari Akhlaque Ah. Mohd Noor, Nur Diana Influence of lithium flouride additive on polyethersulfone membranes |
| title | Influence of lithium flouride additive on polyethersulfone membranes |
| title_full | Influence of lithium flouride additive on polyethersulfone membranes |
| title_fullStr | Influence of lithium flouride additive on polyethersulfone membranes |
| title_full_unstemmed | Influence of lithium flouride additive on polyethersulfone membranes |
| title_short | Influence of lithium flouride additive on polyethersulfone membranes |
| title_sort | influence of lithium flouride additive on polyethersulfone membranes |
| topic | T Technology (General) |
| url | http://eprints.utm.my/5503/ http://eprints.utm.my/5503/1/AniIdris2007_InfluenceOfLithiumFlourideAdditive.pdf |