Scientific Program

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Virtual poster session

Adapting polymer derived ceramic membranes for emulsification process

Wednesday (07.10.2020)
19:40 - 19:43 Room 1
Part of:
Line-Up:
18:40 Virtual poster session Development of CFRP - hybrid foam composites for improved light-weight design of electric vehicles 1 Joachim Baumeister
18:43 Virtual poster session Study of the thermal conductivity of powdered microcellular polymers based on PMMA 1 Ph.D. Ismael Sánchez
18:46 Virtual poster session Manufacturing of functional aluminium matrix syntactic foams 1 Alexandra Kemény
18:49 Virtual poster session Manufacturing and comparison of AlSi12 matrix unimodal and bimodal syntactic metal foams 1 Borbála Leveles
18:52 Virtual poster session The effect of elastomer viscosity in pp/poe foams produced by core-back injection moulding over impact properties 1 Ph.D. Santiago Muñoz Pascual
18:55 Virtual poster session Modelling of the mechanisms of heat transfer in glass foams at different temperatures 1 Paula Cimavilla-Román
18:58 Virtual poster session Thermal conductivity of polyisocyanurate foams (PIR) produced using hydrofluoroolefins (HFOs) as blowing agents 1 Ph.D. Patricia Torres
19:01 Virtual poster session Multiscale modeling of biopolymer aerogels 1 Dr.-Ing. Ameya Rege
19:04 Virtual poster session On the way to mass production of unit-cell based auxetic materials 1 Angela Schwarz
19:07 Virtual poster session Wavy knits – enabling the production of auxetic materials 1 Angela Schwarz
19:10 Virtual poster session Influence of Sample Size on Dynamic Compression of Metal Syntactic Foams 1 Nima Movahedi
19:13 Virtual poster session Synthesis of new non-isocyanate polyurethane foams based on cyclic triscarbonates and diamines 1 Ph.D. Mercedes Santiago-Calvo
19:16 Virtual poster session Formation of monodisperse surfactant foams 1 Prof. Dr. Rumen Krastev
19:19 Virtual poster session Analysis of a AlMg2.5 matrix syntactic foam produced via thixoinfiltration of loosely packed and micro structured recycled balloons 1 João Paulo Paschoal
19:22 Virtual poster session In-situ observation of combustion foaming process for synthesizing porous Al3Ti by X-ray radioscopy 1 Takamasa Inukai
19:25 Virtual poster session Characterization of 3D printed PHBV+BG scaffolds for bone regeneration 1 Prof. Dr. Elida B. Hermida
19:28 Virtual poster session Rheology of a hydrogel-ink, printing fidelity and elastic behavior of 3D-printed scaffolds 1 Prof. Dr. Elida B. Hermida
19:31 Virtual poster session Keratinocytes hacat proliferation on 3D-printed chitosan-collagen scaffolds 1 Prof. Dr. Elida B. Hermida
19:34 Virtual poster session The microhardness and microstructure studies on the sintered open-cell nickel foam 0 Faeze Barzegar
19:37 Virtual poster session Characterization of porous titanium implants produced by 3D printer technique 0 Dr. Akram Salehi
19:40 Virtual poster session Adapting polymer derived ceramic membranes for emulsification process 1 Natália Cristina Fontão
19:43 Virtual poster session Poster discussion in video chat rooms 0
Session Chair


Session V.1: Session 1
Belongs to:
General Topic V: Virtual poster session


Porous membranes with well-defined pore sizes present great potential applications in water treatment and emulsifications process. Ceramic membranes can be synthesized via cross-linking and pyrolysis of a suitable polymeric precursor, at lower temperatures, originating a new class of materials denominated polymer-derived ceramics (PDC). Preceramic polymers can be processed or shaped using usual polymer-forming techniques. The structure and surface characteristics of PDCs can be easily tailored by changing the chemical nature of the starting precursor and the pyrolysis conditions. Therefore, the proper combination of raw materials and processing techniques produces a porous PDC structure with appropriate characteristics to meet the requirements for different membrane applications. In this study, asymmetric porous SiOC membranes with different pore characteristic and membrane morphology were produced by adapting the phase-inversion tape casting technique to the PDC route. Polymethylsiloxane was used as a ceramic precursor. The produced tapes were pyrolyzed under N2 atmosphere. The structure and surface characteristics were tailored by changing the pyrolysis temperatures (600 and 1000 °C) and the additives contents, such as and polyvinylpyrrolidone and solid loading. Scanning electron microscopy analysis revealed the asymmetric morphology composed by a thin skin-layer (average pore size < 2 µm) and a sponge-like support. The differences in membranes porosity (33-47%) and overall pore size distribution (1 - 10 μm) can be controlled according to the slurry composition. Higher mechanical strengths and enhanced hydrophilic character were associated with the higher pyrolysis temperature (ceramization process). The water permeation performances of membranes pyrolyzed at 1000 °C were assessed in a dead-end configuration device under different pressures (1 – 3 bar). The obtained water permeation fluxes (5 – 55 m3/m2.h, at 3 bar) indicated the advantages of the asymmetric structure - a porous skin-layer followed by a porous support-layer which minimizes mass transport limitations. Preliminary premix emulsification tests showed that the number of cycles and the overall pore size of the membrane present the most significant influences on the droplet size distribution. It turned out that the phase-inversion tape casting technique is a flexible and promising alternative to produce tailorable PDC membranes suitable for emulsification applications.

Speaker:
Natália Cristina Fontão
Universität Bremen
Additional Authors:
  • Dr. Michaela Wilhelm
    Universität Bremen
  • Prof. Dr. Kurosch Rezwan
    Universität Bremen

Dateien

Category Short file description File description File Size
Poster Poster_CellMat2020 Poster related to the submitted abstract. 2 MB Download