Continuous modification of polyethylene with styrene and divinylbenzene in melt

Gozdz, A. S.; Trochimczuk, Witold

doi:10.1002/app.1980.070250520

Cited by 14 publications

(3 citation statements)

References 9 publications

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“…A variety of AEM backbones have been studied and developed so far, such as polystyrene [ 22 , 23 ], poly-phenylene oxide (PPO) [ 24 , 25 ], polysulfone [ 26 ] or fluorinated polymers [ 27 , 28 , 29 ], poly-ethylene-co-tetrafluoroethylene (ETFE) [ 30 ], polyetherimide (PEI) [ 31 ], polyvinyl alcohol (PVA) [ 32 ], poly-ether-ether ketone [ 33 ], poly(arylene ether ketone) [ 34 ], and poly-carbazole [ 35 ]. As well, the most extensively investigated functional groups are: –NH 3 + , –RNH 2 + , –R 2 NH + , =R 2 N 2+ , –R 3 P + , –R 2 S + , quaternary ammonium salts (QA) [ 36 , 37 ], and tertiary amines (e.g., BTMA) [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

et al. 2023

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Anion exchange membranes (AEM) have gained attention recently as a promising candidate for low-cost water electrolysis systems to produce hydrogen, linked with renewable energy resources as a sustainable alternative to fossil fuels. The development of potential materials for producing and analyzing AEM is an imperative step towards commercialization and plays a competitive role in the hydrogen production industry. In this article, we developed a composite anion exchange membrane prepared by activating a commercial support structure (Celgard® 3401) with a commercially available functional group (Fumion® FAA-3) through a phase-inversion process. Fourier-transform infrared spectroscopy (FTIR) and Scanning Electron Microscopy (SEM) analysis demonstrated the phase-inversion procedure as an effective methodology. Furthermore, the cell performance test result (with Celgard/Fumion) was very promising and even better in comparison with a commercial membrane commonly applied in alkaline electrolysis (Fumasep). We also developed a testing procedure for membrane performance evaluation during electrolysis which is very critical considering the effect of CO2 absorption on membrane conductivity.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

et al. 2023

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“…To date, many polymers have been used in the preparation of AEMs, for example, polystyrene [14][15][16], polysulfone [17], polyether imide [18], poly(arylene ether) [19], poly(phthalazinone ether ketone) (PPEK) [20], and poly(phthalazinone ether sulfone ketone) (PPESK) [21]. These polymers have been subjected to chloromethylation and thereafter converted for distinct membrane applications such as in fuel cell [22], biomedical devices [23,24], pervaporation [25], solid state polypeptide synthesis [26], etc.…”

Section: Introductionmentioning

confidence: 99%

Preparation of anion exchange membranes from BPPO and dimethylethanolamine for electrodialysis

Zheng²,

et al. 2017

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In this research work, the synthesis of anion exchanges membranes (AEMs) from brominated poly (2, 6-dimethyl-1, 4-phenylene oxide) (BPPO) and dimethyethanolamine (DMEA) has been investigated for electrodialysis (ED) application. Fourier transform infrared spectroscopy was used to confirm the functional groups in the membranes. The morphology of the prepared membranes was investigated by scanning electron microscopy. Physiochemical and electrochemical properties of the prepared membranes were studied in detail. The membranes possess ion exchange capacity of 0.66 mmol/g to 1.38 mmol/g, water uptake of 11.60 % to 48.50 %, volume expansion ratio of 8.58 % to 20.21 %, tensile strength of 32.52 MPa to 49.22 MPa and transport number of 0.94 to 0.98. These membranes have higher chemical stability in alkaline medium than QPPO membrane (quaternized with trimethylamine) at room temperature. The membranes DMEA-10 and DMEA-15 were selected for NaCl desalination by ED with a lab-scale electrodialysis cell at constant applied voltage. The prepared membranes DMEA-10

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“…Among these applications, the separation of specific salts from aqueous electrolyte solutions through ED is one of the most crucial utilizations as far as environmental protection is concerned [ 12 ]. Many types of polymers have been used in AEM fabrication, for instance, polystyrene [ 13 , 14 , 15 ], polysulfone [ 16 ], polyether imide [ 17 ], poly(2,6-dimethyl-1,6-phenylene oxide) (PPO) [ 18 ] poly(arylene ether) [ 19 ], poly(phthalazinone ether ketone) (PPEK) [ 20 ] and poly(phthalazinone ether sulfone ketone) (PPESK) [ 21 ]. These have been subjected to chloromethylation and thereafter converted for distinct membrane utilization such as in fuel cells [ 22 ], biomedical devices [ 23 , 24 ], evaporation [ 25 ], solid state polypeptide synthesis, etc.…”

Section: Introductionmentioning

confidence: 99%

Design of Anion Exchange Membranes and Electrodialysis Studies for Water Desalination

et al. 2016

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Anion exchange membranes are highly versatile and nowadays have many applications, ranging from water treatment to sensing materials. The preparation of anion exchange membranes (AEMs) from brominated poly(2,6-dimethyl-1,6-phenylene oxide) (BPPO) and methyl(diphenyl)phosphine (MDPP) for electrodialysis was performed. The physiochemical properties and electrochemical performance of fabricated membranes can be measured by changing MDPP contents in the membrane matrix. The influence of a quaternary phosphonium group associated with the removal of NaCl from water is discussed. The prepared membranes have ion exchange capacities (IEC) 1.09–1.52 mmol/g, water uptake (WR) 17.14%–21.77%, linear expansion ratio (LER) 7.96%–11.86%, tensile strength (TS) 16.66–23.97 MPa and elongation at break (Eb) 485.57%–647.98%. The prepared anion exchange membranes were employed for the electrodialytic removal of 0.1 M NaCl aqueous solution at a constant applied voltage. It is found that the reported membranes could be the promising candidate for NaCl removal via electrodialysis.

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Continuous modification of polyethylene with styrene and divinylbenzene in melt

Cited by 14 publications

References 9 publications

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

Synthesis and Characterization of a Composite Anion Exchange Membrane for Water Electrolyzers (AEMWE)

Preparation of anion exchange membranes from BPPO and dimethylethanolamine for electrodialysis

Design of Anion Exchange Membranes and Electrodialysis Studies for Water Desalination

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