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Augusty AC, Rangkupan R, Klaysom C. Evaluating Post-Treatment Effects on Electrospun Nanofiber as a Support for Polyamide Thin-Film Formation. Polymers (Basel) 2024; 16:713. [PMID: 38475394 DOI: 10.3390/polym16050713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 02/24/2024] [Accepted: 03/01/2024] [Indexed: 03/14/2024] Open
Abstract
Poly(acrylonitrile-co-methyl acrylate) (PAN-co-MA) electrospun nanofiber (ENF) was used as the support for the formation of polyamide (PA) thin films. The ENF support layer was post-treated with heat-pressed treatment followed by NaOH hydrolysis to modify its support characteristics. The influence of heat-pressed conditions and NaOH hydrolysis on the support morphology and porosity, thin-film formation, surface chemistry, and membrane performances were investigated. This study revealed that applying heat-pressing followed by hydrolysis significantly enhances the physicochemical properties of the support material and aids in forming a uniform polyamide (PA) thin selective layer. Heat-pressing effectively densifies the support surface and reduces pore size, which is crucial for the even formation of the PA-selective layer. Additionally, the hydrolysis of the support increases its hydrophilicity and decreases pore size, leading to higher sodium chloride (NaCl) rejection rates and improved water permeance. When compared with membranes that underwent only heat-pressing, those treated with both heat-pressing and hydrolysis exhibited superior separation performance, with NaCl rejection rates rising from 83% to 98% while maintaining water permeance. Moreover, water permeance was further increased by 29% through n-hexane-rinsing post-interfacial polymerization. Thus, this simple yet effective combination of heat-pressing and hydrolysis presents a promising approach for developing high-performance thin-film nanocomposite (TFNC) membranes.
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Affiliation(s)
- Anniza Cornelia Augusty
- Center of Excellence in Particle and Material Processing Technology, Department of Chemical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
| | - Ratthapol Rangkupan
- Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chalida Klaysom
- Center of Excellence in Particle and Material Processing Technology, Department of Chemical Engineering, Chulalongkorn University, Bangkok 10330, Thailand
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Zhang X, Zheng J, Xu L, Yin M, Zhang G, Zhao W, Zhang Z, Shen C, Meng Q. Novel Thin Film Nanocomposite Forward Osmosis Membranes Prepared by Organic Phase Controlled Interfacial Polymerization with Functional Multi-Walled Carbon Nanotubes. MEMBRANES 2021; 11:476. [PMID: 34203205 PMCID: PMC8304348 DOI: 10.3390/membranes11070476] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 06/16/2021] [Accepted: 06/20/2021] [Indexed: 11/16/2022]
Abstract
Novel high-quality thin film nanocomposite (TFN) membranes for enhanced forward osmosis (FO) were first synthesized through organic phase controlled interfacial polymerization by utilizing functional multi-walled carbon nanotubes (MWCNTs). As 3-aminopropyltriethoxysilane (APTES) grafted MWCNTs via an amidation reaction significantly promoted the dispersion in organic solution, MWCNTs-APTES with better compatibility effectively restricted the penetration of trimesoyl chloride (TMC), thus adjusting the morphology and characters of TFN membranes. Various techniques such as Fourier transform infrared spectra (FTIR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), sessile droplet analysis and FO experiments and reverse osmosis (RO) operation were taken to characterize and evaluate the performance of nanocomposites and membranes. The prepared TFN FO membranes exhibited good hydrophilicity and separation efficiency, in which water flux was about twice those of thin film composite (TFC) membranes without MWCNTs-APTES in both AL-DS and AL-FS modes. Compared with the original TFC membrane, the membrane structural parameter of the novel TFN FO membrane sharply was cut down to 60.7%. Based on the large number of low mass-transfer resistance channels provided by functional nanocomposites, the progresses may provide a facile approach to fabricate novel TFN FO membranes with advanced selectivity and permeability.
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Affiliation(s)
- Xu Zhang
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Jiuhan Zheng
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Lusheng Xu
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Ming Yin
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Guoliang Zhang
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Wenqian Zhao
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Zeyu Zhang
- State Key Lab of Green Chemical Synthesis Technology, Center for Membrane and Water Science &Technology, Institute of Oceanic and Environmental Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; (X.Z.); (J.Z.); (L.X.); (M.Y.); (W.Z.); (Z.Z.)
| | - Chong Shen
- College of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, China;
| | - Qin Meng
- College of Chemical and Biological Engineering, State Key Laboratory of Chemical Engineering, Zhejiang University, Hangzhou 310027, China;
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