Cellulose membranes for Organc Solvent Nanofiltration

Date

2018-06-13

Author

Sukma, Faqıh
Konca, Kübra
Çulfaz Emecen, Pınar Zeynep

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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URI

https://hdl.handle.net/11511/96165

Conference Name

North American Membrane Society Annual Meeting

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Department of Chemical Engineering, Conference / Seminar

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Cellulose Membranes for Organic Solvent Nanofiltration Sukma, Faqih Muhamad; Çulfaz Emecen, Pınar Zeynep (2016-07-21)
Cellulose membranes for organic solvent nanofiltration Sukma, Faqih Muhamad; Çulfaz Emecen, Pınar Zeynep; Department of Chemical Engineering (2016) Cellulose is an alternative polymer that can be used in Organic Solvent Nanofiltration (OSN) where lack of chemically-stable membranes is a major problem. Cellulose, due to strong inter and intramolecular hydrogen bonding, is difficult to dissolve in many solvents, which is an advantage for OSN applications. Common solvent systems like Sodium Hydroxide/Carbon Disulfide (NaOH/CS2) or N-Methylmorpholine-N-oxide (NMMO) for cellulose solubilization are either toxic or unstable. Recent studies have shown that th...
Cellulose membranes for organic solvent nanofiltration Sukma, F. M.; Çulfaz Emecen, Pınar Zeynep (2018-01-01) Cellulose membranes were fabricated by phase inversion from solutions of cellulose in 1-ethyl-3-methylimidazolium acetate ([EMIM] OAc) as solvent and acetone as volatile cosolvent. The rejection of Bromothymol Blue ( 624 Da) in ethanol increased and the permeance decreased by increasing the cellulose concentration in the solution prior to coagulation, either by having more cellulose in the starting solution or by evaporating the volatile cosolvent. Drying the membranes after coagulation further increased th...
Cellulose-based membranes via phase inversion using [EMIM]OAc-DMSO mixtures as solvent Durmaz, Elif Nur; Çulfaz Emecen, Pınar Zeynep (2018-03-16) Cellulose and cellulose acetate membranes were fabricated by phase inversion from their solutions in 1-ethyl-3-methylimidazolium acetate ([EMIM] OAc), or its mixture with dimethyl sulfoxide (DMSO). Inclusion of DMSO in the solution decreased crystallinity and rejection for both polymers. When cellulose solutions were coagulated in ethanol crystallinity and rejections were lower, and cellulose acetate membranes coagulated in ethanol had a loose, macroporous morphology, which was attributed to the poor nonsol...
Cellulose acetate-gelatin-coated boron-bioactive glass biocomposite scaffolds for bone tissue engineering Rad, Reza Moonesi; ALSHEMARY, AMMAR ZEIDAN GHAILAN; Evis, Zafer; Keskin, Dilek; Tezcaner, Ayşen (IOP Publishing, 2020-11-01) In this study, we aimed to prepare and characterize porous scaffolds composed of pure and boron oxide (B2O3)-doped bioactive glass (BG) that were infiltrated by cellulose acetate-gelatin (CA-GE) polymer solution for bone tissue engineering applications. Composite scaffolds were cross-linked with glutaraldehyde after polymer coating to protect the structural integrity of the polymeric-coated scaffolds. The impact of B(2)O(3)incorporation into BG-polymer porous scaffolds on the cross-sectional morphology, por...

Citation Formats

F. Sukma, K. Konca, and P. Z. Çulfaz Emecen, “Cellulose membranes for Organc Solvent Nanofiltration,” presented at the North American Membrane Society Annual Meeting, Kentucky, Amerika Birleşik Devletleri, 2018, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/96165.