Entwicklung von Gas-(Dampf-)Hohlfasermembranen auf Basis eines nachhaltigen Herstellungsverfahrens und einer neuen 3D-Gewebekonstruktionen von Membranmodulen
Zusammenfassung der Projektergebnisse
Currently integrated membrane systems designed for particular gas separation purposes are widely required, e. g. for biogas or natural gas conditioning. Poly-4-methylpentene-1(PMP) is a promising polymer since it has excellent gas transfer properties and chemical resistance under harsh conditions. In this project hollow fibers (HF) from PMP were developed using the “green” melt spinning in contrast to conventional solvent spinning where harmful solvents and precipitants are. The second process step included drawing and crazing of the HF continuously between godets and discontinuously in an immersion bath in order to further decrease the wall thickness and to obtain a porous structure with a thin selective layer. For the research, TPXTM MX002 from Mitsui Chemicals, Inc., Minato, Tokyo, Japan, was used in pellet form. The polymer has been comprehensively investigated (DSC, TGA, WAXD, high temperature GPC). In the pilot and in the lab scale using two different spinneret concepts, melt spinning parameter were identified which lead to low-oriented HF with cross section geometries suitable for gas separation applications (outer diameter: 200 µm, wall thickness: about 20 µm). The textile properties like fineness, strength, elongation at break and hot air shrinkage of the resulting HF, both unadditivated and functionalized with 0.5 w.-% of calcium carbonate, were investigated. The post-treatment lead to porous HF morphologies with channels in radial direction. Especially acetone as active liquid at temperatures below the glass transition temperature of additivated PMP lead to a promising morphology. In addition, 3D membrane modules were developed using textile processes to obtain modules with improved hydrodynamic properties. Tubular lab scale modules with a length of about 25 cm and a diameter of about 1 cm were obtained using triaxial braiding and tape weaving. The modules were examined using textile processes. The development of 3D membrane modules provides a new range of easily scalable membrane devices of almost any shape demanded. The textile approach is worth to be investigated also for HF membranes already existing in the market. Key words: poly-4-methylpentene-1(PMP), hollow fibers, melt-spinning, membrane separation, 3D textile membrane modules, filtration
Projektbezogene Publikationen (Auswahl)
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Application prospects of dense gas separation hollow fibers based on poly(4-methyl-1-pentene). Chemical Papers, 74(6), 1917-1921.
Markova, Svetlana; Shalygin, Maxim; Pelzer, Martin; Gries, Thomas & Teplyakov, Vladimir
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Melt spinning and characterization of hollow fibers from poly(4‐methyl‐1‐pentene). Journal of Applied Polymer Science, 138(1).
Pelzer, Martin; Vad, Thomas; Becker, Amrei; Gries, Thomas; Markova, Svetlana & Teplyakov, Vladimir
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Poly(4-methyl-1-pentene) as a semicrystalline polymeric matrix for gas separating membranes. Journal of Membrane Science, 598, 117754.
Markova, Svetlana Yu.; Gries, Thomas & Teplyakov, Vladimir V.
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Designing 3D Membrane Modules for Gas Separation Based on Hollow Fibers from Poly(4-methyl-1-pentene). Membranes, 12(1), 36.
Markova, Svetlana Yu.; Dukhov, Anton V.; Pelzer, Martin; Shalygin, Maxim G.; Vad, Thomas; Gries, Thomas & Teplyakov, Vladimir V.
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Gas separating hollow fibres from Poly(4-methyl-1-pentene): A new development. Separation and Purification Technology, 278, 119534.
Markova, Svetlana Yu.; Pelzer, Martin; Shalygin, Maxim G.; Vad, Thomas; Gries, Thomas & Teplyakov, Vladimir V.
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Peculiarities of Butane Transfer in Poly(4-Methyl-1-Pentene). Membranes and Membrane Technologies, 3(6), 426-433.
Markova, S. Yu.; Pelzer, M. & Shalygin, M. G.
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Preparation of Hollow Fiber Membranes Based On Poly(4-methyl-1-pentene) for Gas Separation. Fibers, 10(1), 1.
Dukhov, Anton; Pelzer, Martin; Markova, Svetlana; Syrtsova, Daria; Shalygin, Maxim; Gries, Thomas & Teplyakov, Vladimir
