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Curable compositions and membranes
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A composition and ionic compound technology, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve problems such as high resistance of multivalent ions
Active Publication Date: 2017-09-26
FUJIFILM MFG EURO
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[0003] One of the problems encountered with the membranes currently used for RED is their very high resistance to multivalent ions, especially magnesium ions
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[0164] Composite membranes were prepared using the following components:
[0165] MBA: N,N'-Methylenebisacrylamide from Sigma Aldrich.
[0166] AMPS: 2-acrylamido-2-methylpropanesulfonic acid from Hangzhou (China).
[0167] BAMPS: ammonium salt of 1,1-bis(acrylamido)-2-methylpropane-2-sulfonic acid synthesized as described in US 4,034,001.
[0168] DABCO: 1,4-Diazabicyclo[2.2.2]octane (triethylenediamine) from Sigma Aldrich.
[0169] Darocur TM 1173: 2-Hydroxy-2-methyl-1-phenyl-propan-1-one, a photoinitiator from BASF Resins, Paint & Coatings.
[0182] The curable compositions of Examples 1 to 9 were prepared by mixing the ingredients shown in Table 1, where all amounts are weight percent of the relevant components.
[0183] Table 1. Curable Compositions
[0184]
[0185] Note: The weight % data in Table 1 are calculated relative to the total weight of the composition.
[0186] Preparation of Membranes M1 to M9
[0187] Each of the curable compositions described in Table 1 was applied by hand at a speed of about 5 m / min using a 100 micron wire wound rod onto an aluminum subterranean support and then onto Novatexx2223-10 on a nonwoven carrier. Excess composition was scraped off using a wire wound rod (standard size 0 K rod, 0.05mm diameter wire, RK Print Coat Instruments Ltd) and a Light Hammer LH6 from Fusion UV Systems equipped with a D- Bulb and the speed is 30m / min (one way), through 0.21J / cm 2 A dose of UV light is irradiated on one side to cure the impregnated support. The curable compositions of Examp...
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Abstract
A curable composition comprising the components (i) 0 to 60 wt% non-ionic crosslinker(s); (ii) 20 to 85 wt% curable ionic compound(s) comprising an anionic group and at least one ethylenically unsaturated group; (iii) 15 to 45 wt% solvent(s); (iv) 0 to 10 wt% of photoinitiator(s); and (v) 2 to 45 wt% of structure modifier(s); wherein the molar ratio of component (v) : (ii) is 0.25 to 0.65. The compositions are useful for preparing membranes for (reverse) electrodialysis.
Description
technical field [0001] The present invention relates to curable compositions, the use of the curable compositions for the production of films and the use of such films. Background technique [0002] Reverse electrodialysis ("RED") is a known technique for generating electricity by mixing two ionic solutions of different salt concentrations. The technique typically uses a reverse electrodialysis unit that includes a membrane stack of alternating cation and anion exchange membranes, electrodes (usually at each end of the stack), a first pass through the reverse electrodialysis unit for a concentrated ionic solution channel, and a second channel for the dilute ionic solution through the reverse electrodialysis unit. When a concentrated ionic solution is fed through the first channel and a dilute ionic solution is fed through the second channel, the solute from the concentrated solution in the first channel migrates through the membrane to the dilute solution in the second chan...
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