Zhang, HuixingHuixingZhangFidelis, Clara LanaClara LanaFidelisServa, Ana Luiza TeixeiraAna Luiza TeixeiraServaWilhelm, MichaelaMichaelaWilhelmRezwan, KuroschKuroschRezwan2023-09-222023-09-222017-05-0700027820https://media.suub.uni-bremen.de/handle/elib/717810.26092/elib/2498The hydrophobic properties of methyl poly siloxane (MK) were pushed into the“hydrophilic”range by cross-linking it with (3-aminopropyl)triethoxysilane(APTES) and subsequent pyrolysis to enable water-based freeze casting. Fillerproperties are investigated by varying the ratios of MK to APTES (1:1, 1:2, 1:3,1:4, 1:5), and pyrolysis temperatures (400°C, 500°C, 600°C) for the purpose ofdetermining an optimal set of characteristics for freeze casting. Additionally, fillerselection for this purpose is facilitated by analysis of zeta potential values andvapor adsorption. It was found that water-based freeze casting with hybrid fillers,followed by a pyrolysis step (600°C-700°C), leads to a SiOC ceramic monolithwith a lamellar pore morphology and a hierarchically ordered micro/meso/macrop-ore structure. Samples pyrolyzed at 1000°C contain mesopores, having a SSA ashigh as 51.6 m2/g. The hierarchically porous structure is very promising for appli-cations involving gas or liquid transportation.12enAlle Rechte vorbehaltenAlle Rechte vorbehaltenfreeze castingmicro/meso/macroporepolymer derived ceramicssilicon oxycarbidesurfacecharacteristicsMimenima660Artikel/Aufsatzurn:nbn:de:gbv:46-elib71784