Study of the physicochemical and transport performance of neat Matrimid 5218 membrane with nanoparticles: A molecular dynamics simulation

Rashidian, Shahin; Nasrin, Mohammadreza Omidkhah; Pedram, Mona Zamani; Hoseinzadeh, Siamak

doi:10.1016/j.enganabound.2023.01.036

Cited by 4 publications

(2 citation statements)

References 156 publications

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“…All four composites depicted type IV isotherms, indicating the predominant mesoporous nature of this class of composites according to the IUPAC classification . The isotherms of the bare Matrimid showed an H1 hysteresis loop, indicating the presence of strait pores, whereas both Zr(OH) 4 @Matrimid-Inc and Zr(OH) 4 @Matrimid-Coat materials displayed H4 type hysteresis loops, implying the presence of slit-like pores . Notably, the higher N 2 uptake by the bare Matrimid than that by the bare Ultem could be attributed to the different polyimide’s structural architectures, as reported by Gonzalez-Revuelta et al Ultem is a poly(ether imide), while Matrimid is a polyimide, and the presence of the ether group in Ultem causes easy oxidation of the polymer when exposed to air and hence hardens quickly.…”

Section: Resultsmentioning

confidence: 88%

Assessing Detoxification Performance of Metal Hydroxide@Polymer Composites Prepared via Matrix-Incorporation and Spray-Coating Techniques

Aina,

Mondal,

Rownaghi

et al. 2024

ACS Appl. Eng. Mater.

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Polymer-based composites with tunable physiochemical properties are great candidates for efficient destruction of toxic chemicals and vapors. Herein, we report the development of metal hydoxide@polymer composites via matrix-incorporation and spray-coating methods and the assessment of the impact of different preparation methods on their physiochemical properties and detoxification performance. Specifically, Zr(OH) 4 and Ce(OH) 4 were used to enhance the catalytic activity of Ultem, Matrimid, and PIM-1 polymers toward hydrolysis of dimethyl 4-nitrophenylphosphonate (DMNP) simulant. Two different preparation techniques were employed to assess the structure-performance relations in the developed composites in terms of DMNP detoxification performance. The results obtained indicated that surface-coated metal hydoxide@polymer composites outperformed their respective incorporated analogues for both Zr(OH) 4 and Ce(OH) 4 due to the presence of more accessible surface active sites. Moreover, it was found that Ce(OH) 4 gave rise to a faster detoxification rate than Zr(OH) 4 in both matrix-incorporated and surfacecoated composites owing to higher Lewis acidity of Ce(OH) 4 than Zr(OH) 4 . Among the materials investigated, the best-performing material was found to be surface-coated Ce(OH) 4 @PIM-1, which exhibited the fastest DMNP detoxification rate of 0.08 min −1 and the shortest half-life of 8.67 min. The findings of this investigation highlight the potential of the spray-coating method for fabricating composites effective for detoxification of toxic chemicals and vapors.

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Section: Resultsmentioning

confidence: 88%

Assessing Detoxification Performance of Metal Hydroxide@Polymer Composites Prepared via Matrix-Incorporation and Spray-Coating Techniques

Aina,

Mondal,

Rownaghi

et al. 2024

ACS Appl. Eng. Mater.

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“…A simulation study of membranes based on a commercial aromatic polyimide (Matrimid ® ) filled with Calix [4]arene (0-1.5%) predicted improved CO 2 permeability, CO 2 /N 2 and CO 2 /CH 4 selectivity compared to the neat polymeric membrane with a maximum at a concentration of 0.75 vol% of calixarene [21].…”

Section: Introductionmentioning

confidence: 99%

Molecularly Mixed Composite Membranes for Gas Separation Based on Macrocycles Embedded in a Polyimide

Vuono,

Clarizia,

Ferreri

et al. 2024

Polymers

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Polyimides are a polymer class that has been extensively investigated as a membrane material for gas separation owing to its interesting permselective properties in a wide range of operation temperatures and pressures. In order to improve their properties, the addition of different filler types is currently studied. p-tert-Butylcalix[n]arene macrocycles (PTBCs) with different cavity sizes (PTBC4, PTBC6, PTBC8) were used as fillers in a commercial thermoplastic polyimide, with a concentration in the range 1–9 wt%, to develop nanocomposite membranes for gas separation. The selected macrocycles are attractive organic compounds owing to their porous structure and affinity with organic polymers. The nanocomposite membranes were prepared in the form of films in which the polymeric matrix is a continuous phase incorporating the dispersed additives. The preparation was carried out according to a pre-mixing approach in a mutual solvent, and the solution casting was followed by a controlled solvent evaporation. The films were characterized by investigating their miscibility, morphology, thermal and spectral properties. The gas transport through these films was examined as a function of the temperature and also time. The results evidenced that the incorporation of the chosen nanoporous fillers can be exploited to enhance molecular transport, offering additional pathways and promoting rearrangements of the polymeric chains.

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Investigation on Wettability Behaviour of Electrode Coatings using Silica-based SiO2-CaO-CaF2 and ZrO2-CaO-SiO2 Flux System

Mishra

Sharma

Chhibber

2023

Silicon

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Study of the physicochemical and transport performance of neat Matrimid 5218 membrane with nanoparticles: A molecular dynamics simulation

Cited by 4 publications

References 156 publications

Assessing Detoxification Performance of Metal Hydroxide@Polymer Composites Prepared via Matrix-Incorporation and Spray-Coating Techniques

Assessing Detoxification Performance of Metal Hydroxide@Polymer Composites Prepared via Matrix-Incorporation and Spray-Coating Techniques

Molecularly Mixed Composite Membranes for Gas Separation Based on Macrocycles Embedded in a Polyimide

Investigation on Wettability Behaviour of Electrode Coatings using Silica-based SiO2-CaO-CaF2 and ZrO2-CaO-SiO2 Flux System

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