Structure design and performance study on braid-reinforced cellulose acetate hollow fiber membranes

Fan, Zuwei; Xiao, Changfa; Liu, Hailiang; Huang, Qinglin; Zhao, Jianqing

doi:10.1016/j.memsci.2015.03.066

Cited by 61 publications

(44 citation statements)

References 18 publications

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“…The concentrations of feed and permeate solution were determined by UV-Vis spectroscopy at 280 nm using a Camspec spectrophotometer. [16] RESULTS AND DISCUSSION…”

Section: Methodsmentioning

confidence: 99%

Fabrication of cellulose triacetate/graphene oxide porous membrane

Ioniță

Crică

Voicu

et al. 2015

Polym. Adv. Technol.

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Cellulose triacetate (AC)/graphene oxide (GO) porous membranes were successfully fabricated by combining ultrasonication and phase inversion method. The structures and morphologies of the resultant composite membranes were investigated by X-ray diffraction (XRD), scanning electron microscopy, and transmission electron microscopy, respectively. Microscopic and X-ray diffraction measurements revealed that GO sheets were uniformly dispersed within the AC matrix. The pore size and structure were modulated by changing GO concentration from 0.25 to 1 wt%. Membrane thermal properties were also studied. Among all tested membranes, the most favorable GO amount was 1 wt%, giving Td 3% of 274°C, which represents a 22°C enhancement compared with AC. Conversely, the membranes showed improved barrier properties against water and ethanol. The decrease of both ethanol and water fluxes was assigned to the stabilization of composite membrane structure, as a result of GO progressive addition. Bovine serum albumin rejection assay indicated an increasing from 78% in the case of CA membrane to 99% in the case of CA/GO 1 wt% of the rejection degree after 90 min.

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“…The concentrations of feed and permeate solution were determined by UV-Vis spectroscopy at 280 nm using a Camspec spectrophotometer. [16] RESULTS AND DISCUSSION…”

Section: Methodsmentioning

confidence: 99%

Fabrication of cellulose triacetate/graphene oxide porous membrane

Ioniță

Crică

Voicu

et al. 2015

Polym. Adv. Technol.

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“…That was also the reason why we added LiCl and CaCl 2 to the DMAc solution when we prepared the doping solution. 46 So we considered that the effort of the hybrid braid combined with the PET and PMIA bers may have no signicance in the present work compared to others, 12 though it would reduce the cost of the BR PMIA hollow ber membranes. The reinforced braid prepared with the PMIA lament was thus employed in our following study.…”

Section: Morphology Of the Membranesmentioning

confidence: 97%

“…It is desirable that the homogeneous reinforced (HMR) hollow ber membrane uses the same material between the reinforced matrix and the separation layer to enhance the interfacial bonding. Fan 12,13 prepared HMR cellulose acetate (CA) hollow ber membranes by coating CA solution onto the CA hollow tubular braids. Liu 14,15 and Zhang 7,16 fabricated reinforced polyvinyl chloride (PVC) and reinforced polyvinylidene uoride (PVDF) hollow ber membranes, respectively, and found that the HMR membranes had a more favorable interfacial bonding between the reinforced matrix and the separation layer compared with HTR membranes.…”

Section: Introductionmentioning

confidence: 99%

Study on the structural design and performance of novel braid-reinforced and thermostable poly(m-phenylene isophthalamide) hollow fiber membranes

et al. 2017

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Novel braid-reinforced (BR) and thermostable poly(m-phenylene isophthalamide) (PMIA) hollow fiber membranes comprising reinforced braids and a separation layer were prepared by a dry-wet spinning process for the first time. The effects of PMIA concentration and the braid composition on the structure and performance of the BR PMIA hollow fiber membranes were investigated. Field emission scanning electron microscopy (FESEM) was used to observe the morphologies of the BR PMIA hollow fiber membranes. An increase in PMIA concentration resulted in an increase of the protein rejection rate and a decrease in the pure water flux. The higher flux recovery rate indicated that the BR PMIA membranes had excellent antifouling property compared to commercial PVDF membranes. In the BR PMIA membranes existed favorable interfacial bonding between the separation layer and the reinforced braids as the tensile strength of the BR PMIA membranes exceeded 170 MPa. Moreover, when the operating temperature was increased from 25 C to 90 C, the water flux increased more than two-fold with stable ink solution rejection, which showed an excellent thermal stability.

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“…It has been estimated that an optimized HF NF module would give a 100% increase in performance compared to an optimized spiral‐wound module . One disadvantage of HF membranes is their poor mechanical strength, which limits HF applications in high‐pressure separations …”

Section: Introductionmentioning

confidence: 99%

Reinforced thin‐film composite nanofiltration membranes: Fabrication, characterization, and performance testing

Türken

Şengür-Taşdemir

Sayinli

et al. 2019

J of Applied Polymer Sci

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Hollow‐fiber (HF) membranes have the advantage of a higher packing density compared to flat‐sheet and spiral‐wound configurations. However, the low pressure tolerance of HF membranes limits their applications in nanofiltration (NF). In this study, reinforced thin‐film composite (r‐TFC) HF NF membranes were fabricated and evaluated in tests with water containing different salts and organic matter. Reinforced polysulfone ultrafiltration membranes were used as a support for a polyamide layer prepared from piperazine and trimesoyl chloride monomers. The interfacial polymerization conditions were optimized via selection of the trimesoyl chloride reaction time that gave the highest membrane performance. A specific permeate flux of 5.1 L m–2 h–1 bar–1, an MgSO4 rejection of 69%, and an NaCl rejection of 26% at a transmembrane pressure of 6 bars were obtained with the optimized r‐TFC membranes. Performance studies with water characterized by synthetic solution demonstrated removals of the total organic carbon, ultraviolet absorbance at 254 nm, and turbidity in excess of 65, 80, and 90%, respectively. The results of this study illustrate the feasibility of manufacturing r‐TFC HFs and using them in water‐treatment applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48001.

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Structure design and performance study on braid-reinforced cellulose acetate hollow fiber membranes

Cited by 61 publications

References 18 publications

Fabrication of cellulose triacetate/graphene oxide porous membrane

Fabrication of cellulose triacetate/graphene oxide porous membrane

Study on the structural design and performance of novel braid-reinforced and thermostable poly(m-phenylene isophthalamide) hollow fiber membranes

Reinforced thin‐film composite nanofiltration membranes: Fabrication, characterization, and performance testing

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