Cross-condensation and particle growth in aqueous silane mixtures at low concentration

Heitz, Caroline; Laurent, Guillaume; Briard, R.

doi:10.1016/j.jcis.2005.12.011

Cited by 11 publications

(10 citation statements)

References 23 publications

(28 reference statements)

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“…It is clear that the support membrane is perfectly coated with PDMS since the spectra displaying the characteristics peaks of the PSf support membrane disappeared. Moreover, in PDMS/PSf spectra, the prominent peak at 798 cm −1 corresponds to the (SiOSi) symmetry stretching, weak shoulder peaks at 1087 cm −1 and the peak at 879 cm −1 relates to stretching vibrations of SiOCH 3 and SiOH, respectively . The peak at 1259 cm −1 attributed to (SiCH 3 bending), while peak at 1016 cm −1 corresponds to SiC stretching vibrations.…”

Section: Resultsmentioning

confidence: 95%

Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane

Wang

Zhang³

et al. 2019

J of Applied Polymer Sci

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In this work, ether oxide (EO)-based multilayer composite membranes were prepared via interfacial polymerization (IP) of trimesoyl chloride (TMC) and polyetheramine (PEA) on polydimethylsiloxane precoated polysulfone support membrane. The effects of preparation parameters, such as monomer concentrations, reaction time, and heat-treatment temperature on the membrane performance were investigated. The optimal preparation parameters have been concluded. The results showed the increasing monomers concentration of both PEA and TMC can lead to the decrease of CO 2 permeance and increase of CO 2 /N 2 selectivity. The optimal monomers concentration was found. When monomer concentrations are higher than the optimal values, the CO 2 permeance decreases continually while CO 2 /N 2 selectivity only shows a very limited improvement with the further increase of monomers concentration. The reaction time has similar effects on membrane performance as the monomers concentration. The effect of heat-treatment temperature was also studied. With the increasing heat-treatment temperature, the CO 2 permeance shows a decrease tendency, while the CO 2 /N 2 selectivity shows a maximum at 80 C. When PEA is 0.013 mol L −1 , TMC is 0.020 mol L −1 , reaction time is 3 min, and heat-treatment temperature is 80 C, the optimum preparation conditions are achieved with CO 2 permeance of 378.3 gas permeation unit (GPU) and CO 2 /N 2 selectivity of 51.7 at 0.03 MPa. This work may help to design and fabricate gas separation membranes with desired performance.

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Section: Resultsmentioning

confidence: 95%

Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane

Wang

Zhang³

et al. 2019

J of Applied Polymer Sci

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“…In fact, the hydrolyzed products of the aminosilanes are highly stable in the presence of water [6,7]. When the silane is well-hydrolyzed, it is beneficial to reduce the defects and form a dense film due to less Si(OEt) 3 groups and more silanol groups [8,9].…”

Section: Introductionmentioning

confidence: 99%

An environmentally friendly film formed on copper: Characterization and corrosion protection

Rahal¹,

Masmoudi²,

Abdelmouleh³

et al. 2015

Progress in Organic Coatings

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“…Compared to the ATR-FTIR spectrum of the neat polyether diamine (not shown here), the peak at 1100 cm À1 in the FTIR spectrum of PED 80 S 20 -3 h is more asymmetrical. This indicates that overlapping bands are present in the FTIR spectrum of PED 80 S 20 -3 h. The asymmetrical band at 1100 cm À1 can be attributed to a combination of the antisymmetric stretching mode SieOeSi [38] and the characteristic ether CeOeC stretching band. The presence of a SieOeSi network is evidenced by the presence of the shoulder peak at 1258 cm À1 that correlates to the asymmetric stretching vibrations of the SieOeSi bridging sequence [38].…”

Section: Resultsmentioning

confidence: 86%

“…This indicates that overlapping bands are present in the FTIR spectrum of PED 80 S 20 -3 h. The asymmetrical band at 1100 cm À1 can be attributed to a combination of the antisymmetric stretching mode SieOeSi [38] and the characteristic ether CeOeC stretching band. The presence of a SieOeSi network is evidenced by the presence of the shoulder peak at 1258 cm À1 that correlates to the asymmetric stretching vibrations of the SieOeSi bridging sequence [38]. The peak at 1038 cm À1 corresponds to the propyl chain attached to the silicon [38].…”

Section: Resultsmentioning

confidence: 86%

Molecular design of nanohybrid gas separation membranes for optimal CO2 separation

Lau

Paul

Chung

2012

Polymer

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Organic-inorganic materials comprising CO 2 -philic components may yield superior CO 2 transport properties and good CO 2 /H 2 gas selectivity. We report that a fine balance in size heterogeneity in the silicon-based structures is essential and a mixture of sizes up to 50 nm surrounded by 5e15 nm siliconbased nanostructures is the preferred inorganic phase morphology that yields optimal nanohybrid membranes. The combination of optimal synthesis conditions i.e. water/silicon ratio, condensation and ozone pre-treatment durations yields a nanohybrid membrane with a CO 2 permeability of 2000 Barrer while achieving a CO 2 /H 2 selectivity of 11. The findings of this work are important for the design of gas separation membranes using green materials.

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Cross-condensation and particle growth in aqueous silane mixtures at low concentration

Cited by 11 publications

References 23 publications

Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane

Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane

An environmentally friendly film formed on copper: Characterization and corrosion protection

Molecular design of nanohybrid gas separation membranes for optimal CO2 separation

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Cross-condensation and particle growth in aqueous silane mixtures at low concentration

Cited by 11 publications

References 23 publications

Effects of preparation parameters on CO2/N2 gas permselectivity of polyether thin film composite membrane

Effects of preparation parameters on CO2/N2 gas permselectivity of polyether thin film composite membrane

An environmentally friendly film formed on copper: Characterization and corrosion protection

Molecular design of nanohybrid gas separation membranes for optimal CO2 separation

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Product

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Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane

Effects of preparation parameters on CO₂/N₂ gas permselectivity of polyether thin film composite membrane