1997
DOI: 10.1021/ma961337h
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Oxidoreduction-Sensitive Control of Water Permeation through a Polymer Brushes-Grafted Porous Membrane

Abstract: An oxidoreduction-sensitive polymer, poly [3-carbamoyl-1-(p-vinylbenzyl)pyridinum chloride] (PCVPC), was grafted on a porous membrane, and the water permeation through the membrane was investigated. PCVPC homopolymer was found to be water soluble in the oxidized state but insoluble in the reduced state. It could be reversibly dissolved and precipitated in aqueous solutions of high ionic strengths. The polymer was grafted onto a glow-discharged fluoropolymer membrane. In the oxidized state the grafted chains we… Show more

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Cited by 77 publications
(54 citation statements)
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References 24 publications
(41 reference statements)
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“…Numerous research works were carried out for preparing various functional materials. Ito et al synthesized several stimuli-sensitive porous polymers, in which the permeation rate of liquid was altered responding to the change in temperature [14], PH [15], oxido-reduction [16], and photo field [17]. Choi et al grafted N -isopropylacrylamide (NIPAM) onto a porous membrane, and the obtained membrane was able to absorb hydrophobic solutes above the lower critical solution temperature (LCST) and hydrophilic solutes below the LCST [18].…”
Section: Introductionmentioning
confidence: 99%
“…Numerous research works were carried out for preparing various functional materials. Ito et al synthesized several stimuli-sensitive porous polymers, in which the permeation rate of liquid was altered responding to the change in temperature [14], PH [15], oxido-reduction [16], and photo field [17]. Choi et al grafted N -isopropylacrylamide (NIPAM) onto a porous membrane, and the obtained membrane was able to absorb hydrophobic solutes above the lower critical solution temperature (LCST) and hydrophilic solutes below the LCST [18].…”
Section: Introductionmentioning
confidence: 99%
“…An oxidoreduction-sensitive polymer, poly[3-carbamoyl-1-(p-vinylbenzyl)pyridinium chloride] (PCVPC), was grafted on a porous membrane, and the water permeation through the membrane was investigated [42].…”
Section: Oxidoreduction-sensitive Polymer-grafted Porous Membranementioning
confidence: 99%
“…[40,41] Modification of the inner surface of walls of microchannels with responsive thin films provides an alternative powerful means to switch interfacial energy in response to external stimuli such as temperature [42] or pH. [43][44][45] For example, responsive coatings grafted onto porous membranes were successfully used to gate liquid flow. [43,44,46,47] In this paper we extend the application of responsive coatings for the fabrication of smart microfludic channels.…”
mentioning
confidence: 99%
“…[43][44][45] For example, responsive coatings grafted onto porous membranes were successfully used to gate liquid flow. [43,44,46,47] In this paper we extend the application of responsive coatings for the fabrication of smart microfludic channels. We report here on the properties, fabrication, and use of smart microfluidic channels based on responsive gradient coatings constituted of mixed polymer brushes.…”
mentioning
confidence: 99%