Cellulose acetate/sericin blend membranes for use in dialysis

Waheed, Hira; Minhas, Fozia T.; Hussain, Arshad

doi:10.1007/s00289-017-2238-1

Cited by 14 publications

(11 citation statements)

References 28 publications

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“…W is the weight of the wet and dry membranes (grams), 𝝆w is the density of the pure water (gm/cm 3 ) and 𝝆p is the density of polymer (gm/cm 3 ), respectively [25].…”

Section: Porositymentioning

confidence: 99%

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Nano architectured cues as sustainable membranes for ultrafiltration in blood hemodialysis

Ali

Jahan

Sher

et al. 2021

Materials Science and Engineering: C

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“…W is the weight of the wet and dry membranes (grams), 𝝆w is the density of the pure water (gm/cm 3 ) and 𝝆p is the density of polymer (gm/cm 3 ), respectively [25].…”

Section: Porositymentioning

confidence: 99%

“…( 3) and Eq. ( 4) [25]. Where J is the flux in L/m 2 h. V is the volume of the permeated water in Litres.…”

Section: Water Flux and Permeabilitymentioning

confidence: 99%

Nano architectured cues as sustainable membranes for ultrafiltration in blood hemodialysis

Ali

Jahan

Sher

et al. 2021

Materials Science and Engineering: C

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“… Operating conditions and/or engineering design facts Input parameter Description Unit Literature reference Suggested range Reference situation T air A ir temperature °C 20 [6] , 25 [5] 20–25 20 t degas,PS PS degassing duration H – 19 19 t degas,BL BL degassing duration H – 0 0 n filt,PS Number of PS filtrations – 2 [11] 0–2 2 Technical constraints Input parameter Description Unit Literature reference Suggested range Reference situation x degas PS Thickness of PS degassing vessel M – 0–0.01 0.005 x degas BL Thickness of BL degassing vessel M – 0–0.01 0.005 λ degas PS PS vessel jacket thermal conductivity W m − 1 K − 1 14–16 [12] 14–16 15 λ degas BL BL vessel jacket thermal conductivity W m − 1 K − 1 14–16 [12] 14–16 15 h air Convective heat transfer coefficient for air W m − 2 K − 1 2–25 …”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

“… Operating conditions and/or engineering design facts Input parameter Description Unit Literature reference Suggested range Reference situation T NS N S temperature during coagulation °C 25 [5] , 25–75 [2] , 25 [4] 25–50 35 w solvent,coag Mass fraction solvent in coagulation tank – – 0–0.05 0.03

Ratio NS recirculation flow: NS input flow – – 0–15 1.5

Ratio NS input flow: NS coagulation output flow – – 0–100 40 Technical constraints Input parameter Description Unit Literature reference Suggested range Reference situation Δh recirc NS Total manometric head of NS recirculation pump M – 0–5 1 ɳ pump Pump efficiency – 0.7–0.9 [9] 0.7–0.9 0.7 ɳ thermal,continuous Thermal transfer efficiency for continuous unit operations – – 0–1.0 0.93 …”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Modeling equations and dataset of model parameters for ultrafiltration membrane fabrication

et al. 2020

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In the related research article, entitled “A generic process modeling ‒ LCA approach for UF membrane fabrication: Application to cellulose acetate membranes” [1] , a generic model is described and used to obtain the list of material and energy flows as a function of operating conditions for ultrafiltration (UF) hollow fibers preparation by non-solvent induced phase separation. In this data article, equations of the model, a dataset of model parameters and modelled data are detailed. modeling equations are developed from material and energy balances for each unit operation ( i.e. from polymer solution mixing to module conditioning) based on an industrial membrane fabrication process of UF cellulose acetate modules. These equations may be reused as such or adapted to other membrane materials and industrial practices. The dataset of model parameters relates to industrial on-site measurements and scientific literature for the existing cellulose-based module. The modelled data corresponds to a reference situation for which hollow fibers (inner and outer diameters equal to 0.93 mm and 1.67 mm, respectively) are fabricated from a polymer solution composition of 20 wt.% of cellulose triacetate, 78 wt.% N-methyl-2-pyrrolidone and 2 wt.% lithium chloride.

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“…However, there are several limitations because of its hydrophobic moiety. Therefore, various additives are commonly added to the polymer solution during the preparation process to enhance membrane hydrophilicity, 3 such as sericin, 4 Cu 2 O nanoparticles, 5 carboxylic multiwall carbon nanotubes, 6,7 polyvinylpyrrolidone (PVP), 3,8,9 and others. Among these additives, PVP is used frequently as a water‐soluble non‐solvent polymeric additive 7,10–16 …”

Section: Introductionmentioning

confidence: 99%

Rheological behavior of PES/PVP/DMAc solution and PVP structural regulation for hollow fiber membrane

Zhang

Jiang

et al. 2022

J of Applied Polymer Sci

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Rheological study plays a significant role in hollow fiber membrane spinning process and membrane structure regulation. In this work, the rheological behaviors of polyethersulfone (PES) spinning solutions added the polyvinylpyrrolidone (grade of PVP‐K30, PVP‐K60, and PVP‐K90) were systematically investigated by rotational rheometry to understand how the PES membrane structure changes. Results show that PVP of variable molecular weights change the rheological properties of PES spinning solution, such as the viscosity (ηa), non‐Newtonian index (n), flow activation energy (Eη), structural viscosity index (∆η), storage modulus (G′), and loss modulus (G′′). The mixture with PVP‐K30 exhibits optimal spinnability but the finger‐like membrane structure is undesirable for the hemodialysis. The rheological behaviors of PES/PVP‐K60 and PES/PVP‐K90 reveal that increasing shear rate and temperature are effective ways to improve the spinnability of the mixture and the membrane structure is regulated. Meanwhile, the addition of PVP‐K60 or PVP‐K90 at their critical concentration to the PES solution can fabricate a hollow membrane with a sponge‐like structure. Combining spinnability and membrane structure, PVP‐K90 is a suitable additive for the hemodialysis membrane.

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Cellulose acetate/sericin blend membranes for use in dialysis

Cited by 14 publications

References 28 publications

Nano architectured cues as sustainable membranes for ultrafiltration in blood hemodialysis

Nano architectured cues as sustainable membranes for ultrafiltration in blood hemodialysis

Modeling equations and dataset of model parameters for ultrafiltration membrane fabrication

Rheological behavior of PES/PVP/DMAc solution and PVP structural regulation for hollow fiber membrane

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