The prediction of polymeric membrane characteristics prepared via nonsolvent induced phase separation by the apparent coagulation time

Ghasemi, Seyed Morteza; Mohammadi, Naser

doi:10.1016/j.polymer.2013.06.046

Cited by 24 publications

(6 citation statements)

References 38 publications

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“…The closed cell structure observed for HFM pores implies that the liquid-liquid phase separation based on nucleation and growth mechanism of polymer-lean phases (NG-L) dominates the morphology of produced HFMs regardless of drawing ratio. In literature (Young and Chen, 1995;Stropnik et al, 2000;Ghasemi and Mohammadi, 2013), liquid-liquid phase separation proceeds via nucleation and growth (NG) or spinodal decomposition (SD) mechanism. The former leads to closed cells while the latter is responsible for an interconnected network of pores also known as open cells.…”

Section: Resultsmentioning

confidence: 99%

CO 2 absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

Fashandi

Ghodsi

Saghafi

et al. 2016

International Journal of Greenhouse Gas Control

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Section: Resultsmentioning

confidence: 99%

CO 2 absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

Fashandi

Ghodsi

Saghafi

et al. 2016

International Journal of Greenhouse Gas Control

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“…W wet is the wet membrane weight after removing excess water from the surface, W dry is the weight of dry membrane after being left for 24 h at room temperature and ρ p (g/cm 3 ) is the polymer density, which is equal to 1.02 g/cm 3 :…”

Section: Methodsmentioning

confidence: 99%

Enhanced modification technique for polyacrylonitrile UF membranes by direct hydrolysis in the immersion bath

Cheraghali

Maghsoud

2019

J of Applied Polymer Sci

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Conventional hydrolysis modification of polyacrylonitrile (PAN) membranes is usually carried out in a post-treatment step during which hydrophilic groups are created on the membrane surface. In this article, however, direct hydrolysis in the immersion bath is proposed as a new and simple approach for simultaneous membrane preparation and modification. The main advantages of this method include lower alkali concentrations, promptness, and the lack of need for elevating temperature compared to other studies. The cast films were immersed in the coagulation bath containing aqueous NaOH solutions of various concentrations (0.003, 0.0125, 0.025, 0.05, and 0.1 M) for 1, 3, 5, and 10 min, which were then transferred to a bath of pure water. Membranes were characterized by pure water flux, porosity, average pore diameter, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle, mechanical properties, rejection, and flux recovery ratio (FRR) measurements. At all treatment times, the pure water flux of modified membranes reached its maximum at low NaOH concentrations with a substantial increase (210%) in the membrane treated with 0.0125 M NaOH for 1 min. Furthermore, the kinetics of the hydrolysis reaction was considered to provide deeper insights into morphological changes occurring during the hydrolysis.

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“…Mayes into regular solution model of Flory and Huggins [22], and this enhances its predictive capabilities. The versatility and reliability of regular solution model of Ruzette and Mayes for description of phase behavior of various solutions have been demonstrated in literature [18,[29][30][31][32].…”

Section: R I P T Dependent Interaction Parameter Implicitly Incorpora...mentioning

confidence: 99%

Contaminant uptake by polymeric passive samplers: A modeling study with experimental validation

Jooshani

Khansary

Marjani

et al. 2018

Chemical Engineering Research and Design

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The prediction of polymeric membrane characteristics prepared via nonsolvent induced phase separation by the apparent coagulation time

Cited by 24 publications

References 38 publications

CO 2 absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

CO 2 absorption using gas-liquid membrane contactors made of highly porous poly(vinyl chloride) hollow fiber membranes

Enhanced modification technique for polyacrylonitrile UF membranes by direct hydrolysis in the immersion bath

Contaminant uptake by polymeric passive samplers: A modeling study with experimental validation

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