Reticulated versus crenelated surfaces on macroporous polystyrene–divinylbenzene membranes

Swatling, D. K.; Manson, J. A.; Thomas, Dave; Sperling, L. H.

doi:10.1002/app.1981.070260218

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…Samples 1-3 in Table I represent compositions that were obtained by adding increasing amounts of MMA to a solution containing 75% water and 25% KAAS. Similarly, samples 4-6 were obtained by adding MMA to a 30% solution of KAAS in water and samples [7][8][9] were obtained by adding MMA to a 35% solution of KAAS in water. The trend in composition variation represented by these samples is also indicated in Table I.…”

Section: Morphology Of Polymeric Foammentioning

confidence: 99%

Formation of polymeric foams from aqueous foams stabilized using a polymerizable surfactant

Raj

Sasthav

Cheung

1993

J of Applied Polymer Sci

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SYNOPSISPolymerization of foams formed by purging with nitrogen an aqueous precursor system made up of a polymerizable surfactant, a monomer, and a cross-linking agent yielded stable polymeric foams. The precursor system for foaming contained hydrophobic components (methyl methacrylate as monomer and ethylene glycol dimethacrylate as cross-linking agent ) in water and was stabilized using the polymerizable surfactant potassium acrylamidostearate. The phase-behavior study for the precursor system was conducted followed by an investigation of the stability of the foams obtained on purging with nitrogen. Sonicating the precursor systems during the process of purging with nitrogen gas followed by polymerization resulted in aqueous foams having a uniform cell size. The aqueous foams were polymerized by a free-radical mechanism using photoinitiated and thermal techniques to form stable polymeric foams. The morphology and density of the polymeric foams obtained was determined and observed to be significantly dependent on the composition of the aqueous precursor that was foamed. These results indicate the feasibility of synthesizing polymeric foams without using hydrocarbon solvents or blowing agents during polymerization.

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Section: Morphology Of Polymeric Foammentioning

confidence: 99%

Formation of polymeric foams from aqueous foams stabilized using a polymerizable surfactant

Raj

Sasthav

Cheung

1993

J of Applied Polymer Sci

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Macroporous membranes, I. Reactive macroporous membranes based on glycidyl methacrylate‐ethylene dimethacrylate copolymer for high‐performance membrane chromatography

Švec

Jelı́nková

Votavová

1991

Angew. Makromol. Chem.

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Macroporous membranes were prepared by the radical polymerization of the organic phase, carried out in bulk, opposite to the usually employed suspension radical synthesis of macroporous beads. The properties of the membranes, such as porosity, specific surface area, pore size and distribution and others, approach those of the beads and can be modified by using the same procedures. Water permeability of the membranes is the property important with respect to their application. Dependences of permeability on the polymerization time, concentration of the crosslinking agent in the polymerization mixture, membrane thickness and the polymerization procedure were determined. ZUSAMMENFASSUNG.Durch radikalische Polymerisation einer nicht suspendierten organischen Phase, die normalerweise bei der Herstellung von makroporosen sphtirischen Teilchen in einer Suspension benutzt wird, wurden direkt in einer Form makroporose Membranen hergestellt. Ihre Eigenschaften wie z. B. die Porositat, spezifische Oberflache, PorengroRe, PorengroDeverteilung u. a. ahneln denen makroporoser Teilchen und konnen auch durch dieselben Methoden beeinflufit werden. Fur die Anwendung der Membranen ist die Wasserdurchlassigkeit von besonderer Wichtigkeit. Die Abhlngigkeiten der Wasserdurchlassigkeit von der Polymerisationsdauer, der Vernetzungsmittelkonzentration im Polymerisationsansatz, der Membrandicke und der Polymerisationsart wurden ermittelt.

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Resins containing extractants: Morphology of polymers prepared by polymerization of vinyl monomers in the presence of uranium‐selective extractants

Belfer

Egozy

Korngold

1984

J of Applied Polymer Sci

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The effect of a selective organophosphours extractant on the structure and properties of crosslinked polymers was studied. The extractant, incorporated in the polymerization mixture, affected the formation of the polymer. The uranium capacity of the resin was directly proportional to the amount of extractant. The use of scanning electron microscopy showed that the polymers are macroporous and that the porosity depends on the amounts of extractant and crosslinking agent.

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Reticulated versus crenelated surfaces on macroporous polystyrene–divinylbenzene membranes

Cited by 5 publications

References 7 publications

Formation of polymeric foams from aqueous foams stabilized using a polymerizable surfactant

Formation of polymeric foams from aqueous foams stabilized using a polymerizable surfactant

Macroporous membranes, I. Reactive macroporous membranes based on glycidyl methacrylate‐ethylene dimethacrylate copolymer for high‐performance membrane chromatography

Resins containing extractants: Morphology of polymers prepared by polymerization of vinyl monomers in the presence of uranium‐selective extractants

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