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3. Carbon foams via ring-opening metathesis polymerization of emulsion templates : a facile method to make carbon current collectors for battery applicationsSebastijan Kovačič, Bettina Schafzahl, Nadejda B. Matsko, Katharina Gruber, Martin Schmuck, Stefan Koller, Stefan A. Freunberger, Christian Slugovc, 2022, original scientific article Keywords: emulsion templating, carbonization, ROMP, polyHIPEs, porous cathode
Published in DKUM: 10.04.2024; Views: 204; Downloads: 6
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4. Composite PLGA–nanobioceramic coating on moxifloxacin-loaded akermanite 3D porous scaffolds for bone tissue regenerationGeorgia K. Pouroutzidou, Lambrini Papadopoulou, Maria Lazaridou, Konstantinos Tsachouridis, Chrysanthi Papoulia, Dimitra Patsiaoura, Ioannis Tsamesidis, Konstantinos Chrissafis, George Vourlias, Konstantinos M. Paraskevopoulos, Antonios D. Anastasiou, Dimitrios Bikiaris, Eleana Kontonasaki, 2023, original scientific article Keywords: 3D porous scaffolds, foam replica technique, akermanite scaffolds, nanofillers, moxifloxacin- loaded scaffolds
Published in DKUM: 05.04.2024; Views: 191; Downloads: 11
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5. A point particle source model for conjugate heat and mass transfer in dispersed two-phase flows by BEM based methodsTimi Gomboc, Jurij Iljaž, Jure Ravnik, Matjaž Hriberšek, 2023, original scientific article Keywords: boundary-domain integral method, dispersed two-phase flow, two-way coupling, spherical porous particles, drying
Published in DKUM: 28.03.2024; Views: 210; Downloads: 13
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6. Modelling of downscale model design and parameters for filter validation extention : zaključno poročiloMatjaž Hriberšek, Jure Ravnik, Aleš Hribernik, Jurij Iljaž, Matjaž Ramšak, Matej Zadravec, Gorazd Bombek, Timi Gomboc, 2023, final research report Keywords: mechanics, porous materials, hydraulic model, mechanical properties
Published in DKUM: 03.11.2023; Views: 630; Downloads: 11 |
7. Porous beads from multiple emulsions with thiol-ene polymerisation : magistrsko deloStanko Kramer, 2019, master's thesis Abstract: This thesis aims to explain the process of porous bead synthesis. The porous beads were prepared from a multiple emulsion water-in-oil-in-water (W/OW) system. The W/O/W multiple emulsion was made up of a High Internal Phase Emulsion (HIPE (primary emulsion)) and a suspension phase. The HIPE consisted of pentaerythritol tetrakis (3 mercaptopropionate) (TT) in combination with either divinyl adipate (DVA) or trimethylolpropane triacrylate (TMPTA) and an internal phase volume fraction of 80 %. The suspension phase consisted of an aqueous phase with dissolved surfactants which stabilised the secondary emulsion. The surfactants which stabilised the secondary emulsion were polyvinylpyrrolidone K30 (PVP K30) and polyvinylpyrrolidone K90 (PVP K90).
The polymerisation was carried out thermally at first for 24 hours and later under UV light and daylight, as the thermally initiated polymerisation was unsuccessful due to coalesence. The beads that were obtained using the photoinitiated polymerisation were porous with a mostly bicontinuous structure and varying diameters. The viscosity of the primary emulsion (HIPE) had the greatest influence on the stability of the entire W/O/W emulsion. By adding more than 5 wt. % of toluene to the primary emulsion, the emulsion broke down and did not successfully polymerise. Another important factor was the ratio of the functional groups in the case of TT-co-TMPTA, which greatly affected the yield and structure of the obtained beads.
The diameters of the spherical particles were dependent on the viscosity, monomer ratio and surfactant used in the suspension phase. The inner structure of the beads was mostly bicontinuous with occasional pores that resembled a polyHIPE structure.
The obtained beads had a yield of up to 80 % in the case of TT-co-DVA and a yield of up to 90 % in the case of TMPTA-co-DVA
Keywords: polyHIPE, thiol-ene, suspension polymerisation, porous beads, HIPE
Published in DKUM: 17.09.2019; Views: 1586; Downloads: 227
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8. Double diffusive natural convection in a horizontal porous layer with the boundary domain integral methodRenata Jecl, Janja Kramer Stajnko, Leopold Škerget, 2009, original scientific article Abstract: We present the boundary-domain integral method, one of the numerical methods for solving the transport phenomena in porous media. The results for the case of double diffusive natural convection in a porous horizontal layer, which is fully saturated with an incompressible fluid, are obtained. Modified Navier-Stokes equations were used to describe the fluid motion in porous media in the form of conservation laws for mass, momentum, energy and species. Several results for different cases of double diffusive natural convection in a porous horizontal layer are presented and compared with some published studies in which calculations with other numerical methods were performed.
Keywords: porous media, boundary domain integral method, double diffusive natural convection, Darcy-Brinkman equation
Published in DKUM: 06.06.2018; Views: 1171; Downloads: 68
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10. From stochastic foam to designed structure: balancing cost and performance of cellular metalsDirk Lehmhus, Matej Vesenjak, Sven De Schampheleire, Thomas Fiedler, 2017, review article Keywords: cellular metal, metallic foam, metal foam, porous materials, lattice materials, costs, manufacturing, additive manufacturing, mechanical properties, energy absorption
Published in DKUM: 04.09.2017; Views: 1624; Downloads: 641
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