Flory-Huggins Based Model to Determine Thermodynamic Property of Polymeric Membrane Solution

Aryanti, P.T.P.; Ariono, Danu; Hakim, Ahmad N.; Wenten, I Gede

doi:10.1088/1742-6596/1090/1/012074

Cited by 18 publications

(15 citation statements)

References 43 publications

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“…It has been previously studied that the binodal curve or equilibrium boundary of the membrane solution is strongly affected by the interaction between the components, namely non-solvent (NS), solvent (S), and polymer (P). 41 The interaction of components in membrane solution is commonly notified as g 12 for NS and S, g 13 for NS and P, and g 23 for S and P. 35,47 These interactions influence the mass transfer rate between S and NS during the immersion process in a coagulation bath (Figure 4c). A small value of g 12 implies a stronger polar interaction between S and NS.…”

Section: Determination Of Uf Membrane Porositymentioning

confidence: 99%

“…In the NIPS method, the binodal curve is influenced by the interaction between polymer, solvent, and nonsolvent components. 35,36 There are many factors affecting the phase separation in membrane solution, including polymer concentration, type and composition of solvent and non-solvent, and operating condition. [37][38][39] High interaction between components in the membrane system results in delay phase separation, which produces a membrane with an open porous surface and spongelike structure below the surface layer.…”

Section: Introductionmentioning

confidence: 99%

“…In the NIPS method, the binodal curve is influenced by the interaction between polymer, solvent, and non‐solvent components 35,36 . There are many factors affecting the phase separation in membrane solution, including polymer concentration, type and composition of solvent and non‐solvent, and operating condition 37–39 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation of highly selective PSf/ZnO/PEG400 tight ultrafiltration membrane for dyes removal

Aryanti

Nugroho

Widiasa

et al. 2022

J of Applied Polymer Sci

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Tight ultrafiltration (UF) has increasingly been developed to overcome the low selectivity of conventional UF membranes towards soluble contaminants. In this work, a tight structure of polysulfone-based (PSf) UF membrane was prepared by blending PSf with polyethylene glycol (PEG400), ZnO nanoparticle (ZnO-Np), and acetone (Ac) in dimethylacetamide (DMAc). The influences of Ac/DMAc ratio (1: 15 to 1:25) and PEG400 concentration (0-25 wt%) on the binodal curve of the polymer solution, characteristics, and performances of the UF membrane were studied. The membrane performances were investigated by observing the permeate flux and dye rejection during real textile wastewater treatment. The binodal curves are close to the polymer line, which means that rapid demixing occurred after the casted solution was immersed in the coagulation bath. Based on FTIR analysis, PEG400 and ZnO-Np were partially entrapped in the UF membrane structure. Over 90% of color removal at a permeate flux of 72 L.m À2 .h À1 could be achieved when the Ac/DMAC ratio was 1:12. The tight-UF membrane removed TDS and Naphthol AS by 74.5% and 92.8%, respectively. Since the experimental result showed a high contaminants removal, the tight-UF could be used as clean technology to produce clean water for water reuse purposes at low energy requirements.

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Section: Determination Of Uf Membrane Porositymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation of highly selective PSf/ZnO/PEG400 tight ultrafiltration membrane for dyes removal

Aryanti

Nugroho

Widiasa

et al. 2022

J of Applied Polymer Sci

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“…Binodal and spinodal curves are represented in ternary-phase diagrams. As a result of the addition of photocatalytic nanoparticles, such as TiO 2 , the diagram of the binodal curve of the ternary system is displaced as depicted in the red line plotted in Figure 3 [102,103]. This will ultimately affect the porous morphology of the polymer membrane and it should be analyzed in detail for each quaternary system.…”

Section: Phase Inversionmentioning

confidence: 99%

Critical Issues and Guidelines to Improve the Performance of Photocatalytic Polymeric Membranes

et al. 2020

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Photocatalytic membrane reactors (PMR), with immobilized photocatalysts, play an important role in process intensification strategies; this approach offers a simple solution to the typical catalyst recovery problem of photocatalytic processes and, by simultaneous filtration and photocatalysis of the aqueous streams, facilitates clean water production in a single unit. The synthesis of polymer photocatalytic membranes has been widely explored, while studies focused on ceramic photocatalytic membranes represent a minority. However, previous reports have identified that the successful synthesis of polymeric photocatalytic membranes still faces certain challenges that demand further research, e.g., (i) reduced photocatalytic activity, (ii) photocatalyst stability, and (iii) membrane aging, to achieve technological competitiveness with respect to suspended photocatalytic systems. The novelty of this review is to go a step further to preceding literature by first, critically analyzing the factors behind these major limitations and second, establishing useful guidelines. This information will help researchers in the field in the selection of the membrane materials and synthesis methodology for a better performance of polymeric photocatalytic membranes with targeted functionality; special attention is focused on factors affecting membrane aging and photocatalyst stability.

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“…The process of making membranes with the phase inversion method begins with the homogenization process of the solvent and polymer, after the homogenization process takes place, the polymer solution is printed in a membrane printer equipped with a cutting knife, after the process the membrane is immersed in a coagulation bath containing nonsolvent (Nurkhamidah et al, 2020), the soaking process serves to evaporate the remaining solvent which eventually forms membrane pores, this process is called liquid-liquid mixing (L-L Demixing) which is continued with solid-liquid mixing or what is called phase separation followed by membrane compaction. The parameters that determine the mechanism of membrane formation are based on thermodynamics including Solvent-Polymer-Solvent-Nonsolvent phase separation described through a phase diagram (Flory-Huggins Theory) (Aryanti et al, 2018;Heydarinasab, 2016) and Solubility Effects between Polymer-solvent and Solvent-Non-solvent (Solubility Parameter) (Gaikwad et al, 2017), and kinetically during membrane formation which includes solvent diffusion (out of membrane) and nonsolvent diffusion (into polymer film) (Lua & Shen, 2013).…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Thermodynamic Studies in Cellulose Acetate-Polybutylene Succinate(CA-PBS)/Single Solvent/Water System for Desalination Membrane

Nyamiati

Nurkhamidah

Rahmawati

et al. 2023

Eksergi

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The most important part of the membrane synthesis process so that it has the desired pores is the solidification process of the membrane, the process begins with a change from one liquid phase into two liquid phases (liquid-liquid demixing). At a certain period during demixing, the polymer-rich phase solidifies; thus, a dense membrane matrix is formed. Parameters that determine the mechanism of membrane formation are based on thermodynamics including phase separation of Solvent-Polymer-Non-solvent which is explained through a phase diagram (Flory-Huggins Theory). This study aims to determine the initial prediction of the formation of CA-PBS membranes with various solvents used and variations of non-solvents in the best system, which is proven by its characteristics and performance when applied to desalination membranes which include ternary diagrams using cloud point data, solubility parameters with Hansesn solubility, the solvent-non-solvent diffusivity using the Tyn Calus Equation approach and the morphological proofing of the membrane through SEM photos, and the performance of the resulting membrane through salt rejection and permeate flux. The results of the difference in solubility parameters are can be predicted that using DMF solvent on the CA-PBS membrane can reduce the pore size and eliminate voids and macrovoids in the membrane morphology.

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Flory-Huggins Based Model to Determine Thermodynamic Property of Polymeric Membrane Solution

Cited by 18 publications

References 43 publications

Preparation of highly selective PSf/ZnO/PEG400 tight ultrafiltration membrane for dyes removal

Preparation of highly selective PSf/ZnO/PEG400 tight ultrafiltration membrane for dyes removal

Critical Issues and Guidelines to Improve the Performance of Photocatalytic Polymeric Membranes

Kinetic and Thermodynamic Studies in Cellulose Acetate-Polybutylene Succinate(CA-PBS)/Single Solvent/Water System for Desalination Membrane

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