Cellulose acetate membranes fabricated by a combined vapor-induced/wet phase separation method: morphology and performance evaluation

Moghiseh, Marzieh; Safarpour, Mahdie; Barzin, Jalal

doi:10.1007/s13726-020-00847-z

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…12 Compared with inorganic PCMs, organic PCMs have the following advantages: high thermal energy storage density, low or no supercooling, chemical and thermal stabilities, and non-corrosiveness. 13 Among organic PCMs, polyethylene glycol (PEG) is multifunctional, exhibiting high latent heat of phase change, a wide range of temperature transitions, excellent thermal and chemical stabilities, 14 easy chemical modification, 15 good biocompatibility, 16 low vapor pressure, 17 has a non-competitive price, 18 and is non-toxic, and non-corrosive. 19 However, PEG also has disadvantages, such as its easy leakage during the phase change process, which limits its application.…”

Section: Introductionmentioning

confidence: 99%

Cross-Linked Poly(N-hydroxymethyl acrylamide)/Polyethylene Glycol Eutectic Microspheres with an Interpenetrating Polymer Network as a Composite Phase Change Material

et al. 2021

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This study presents a composite phase change material (CPCM) that uses emulsion polymerization to prepare crosslinked poly(N-hydroxymethyl acrylamide) (PN-MA)/polyethylene glycol (PEG) interpenetrating polymer network (IPN) eutectic microspheres. X-ray diffractogram shows that even after adding PN-MA for cross-linking, the PEG eutectic still exhibited crystallization ability. Differential scanning calorimetry shows that the CPCM melted at 31.58 °C with 94.61 J/g and solidified at 38.02 °C with 88.63 J/g. Thermogravimetric analysis suggested that the CPCM can be applied to thermal energy storage. After 25 thermal cycles, there was a change in the macrostructure of the CPCM and the latent heat of phase change. Scanning electron microscopy results shows that the CPCM is a kind of microsphere with uniform particle size distribution. The CPCM is expected to be used in fields such as smart textiles, thermal insulation materials, and industrial waste heat utilization.

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Section: Introductionmentioning

confidence: 99%

Cross-Linked Poly(N-hydroxymethyl acrylamide)/Polyethylene Glycol Eutectic Microspheres with an Interpenetrating Polymer Network as a Composite Phase Change Material

et al. 2021

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“…Polymer-based desalination membranes are the most used due to its low cost, flexibility, and versatility and can be from natural origin (e.g., cellulose [15][16][17] and rubber polyisoprene [18] ) or synthetic (polyethylene, [19] polyamide, [20,21] polyester, [22] polyimides, [23] benzimidazoles [24] and sulfonated polymers and its composites [25,26] ). Hwang et al [27] studied the effects of GOs incorporation on polysulfone membranes prepared by phase inversion method in the presence of polyvinyl pyrrolidone (PVP) on the antifouling performance in the ultrafiltration process.…”

mentioning

confidence: 99%

Synthesis of sulfonated poly(styrene‐co‐methyl methacrylate) by semicontinuous heterophase polymerization for filtration membranes

Ovando‐Medina

Escobar‐Villanueva

Martínez‐Gutiérrez

2021

Vinyl Additive Technology

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In this study, styrene (St) and methyl methacrylate (MMA) were copolymerized in semicontinuous heterophase using Hitenol-BC10 (HBC10) as polymerizable surfactant and ammonium persulfate as initiator to obtain copolymers of poly(Stco-MMA). The effects of St/MMA weight ratio and surfactant concentration on kinetics, and colloidal properties of latexes were studied. Copolymers and latexes were characterized by scanning electron microscopy, thermogravimetric analysis (TGA), gel permeation chromatography (GPC), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction analysis. Fast reaction rates under monomer starved conditions and high conversions (>85%) were observed in all cases, with a weight-average molecular weight in the range of 2.10 Â 10 6 to 0.96 Â 10 6 g mol À1 , decreasing with the HBC10 concentration due to an effect of chain transference to surfactant. Stable latexes with spherical particles with average diameter in the interval of 65-41 nm and Z-potential in the interval of À68.24 to À38.44 mV were obtained. Copolymers were sulfonated using acetyl sulfate as sulfonating agents and subsequently used for filtration membrane fabrication through the phase inversion method. Membranes were tested in simulated seawater filtration (3.5% NaCl) under constant pressure. At a pressure of 20 psia, permeated flux (J) of pure water and salt rejection (R) varied from 13.8 to 20.5 L m À2 h À1 and 37.8%-50.7%, respectively. It was concluded that membrane's performance is dependent on copolymer composition, the crystallinity of copolymers, and the ionic exchange capacity of membranes, being the best membrane composed of 90/10 of St-to-MMA weight ratio and using a monomer-to-surfactant weight ratio of 29.9.

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Membrane technology for CO2 removal from CO2-rich natural gas

Shovon,

Akash,

Monir

et al. 2024

Advances in Natural Gas: Formation, Processing, and Applications. Volume 2: Natural Gas Sweetening

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Cellulose acetate membranes fabricated by a combined vapor-induced/wet phase separation method: morphology and performance evaluation

Cited by 3 publications

References 31 publications

Cross-Linked Poly(N-hydroxymethyl acrylamide)/Polyethylene Glycol Eutectic Microspheres with an Interpenetrating Polymer Network as a Composite Phase Change Material

Cross-Linked Poly(N-hydroxymethyl acrylamide)/Polyethylene Glycol Eutectic Microspheres with an Interpenetrating Polymer Network as a Composite Phase Change Material

Synthesis of sulfonated poly(styrene‐co‐methyl methacrylate) by semicontinuous heterophase polymerization for filtration membranes

Membrane technology for CO2 removal from CO2-rich natural gas

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