Highly porous corundum–mullite ceramics – Structure and properties

Zaķe-Tiļuga, Ieva; Švinka, Ruta; Švinka, Visvaldis

doi:10.1016/j.ceramint.2013.09.139

Cited by 37 publications

(11 citation statements)

References 11 publications

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“…They have been utilized to produce separation membranes, thermal insulation systems, catalyst supports, implantable bioceramics, and other uses. In particular, porous alumina ceramics—as one of the most popular oxide ceramics—have been used for a wide range of applications, including: separation materials, membranes, and implantable bioceramics . Nowadays, it has been prepared by various methods, including: freeze‐casting, chemical foams method, extrusion molding, and pore‐forming agent method …”

Section: Introductionmentioning

confidence: 99%

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Chen

Cui

et al. 2018

Int J Applied Ceramic Tech

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Porous alumina ceramics were fabricated by starch consolidation casting using corn starch as a curing agent while their microstructure, mechanical properties, pore size distribution, and corrosion resistance were examined. Results showed that the porous alumina ceramics with the flexural strength of about 44.31MPa, apparent porosity of about 47.67% and pore size distribution in the range of 1‐4 μm could be obtained with 3wt% SiO2 and 3wt% MgO additives. Corrosion resistance results showed mass losses: hot H2SO4 solution and NaOH solution for 10 hours were 0.77% and 2.19%, which showed that these porous alumina ceramics may offer better corrosion resistance in acidic conditions.

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Section: Introductionmentioning

confidence: 99%

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Chen

Cui

et al. 2018

Int J Applied Ceramic Tech

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“…Our recent research has shown that the two main crystalline phases in the investigated materials were corundum and mullite [18].…”

Section: Resultsmentioning

confidence: 99%

“…The scheme and details of the sample preparation are described elsewhere [18]. Dried samples were sintered at 1750°C; heating rate -140º/h (2.3º/min); holding time at the maximum temperature -1 h.…”

Section: Raw Materials and Sample Preparationmentioning

confidence: 99%

Thermal shock resistance of porous Al2O3-mullite ceramics

Zaķe-Tiļuga

Švinka

et al. 2015

Ceramics International

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“…Inorganic porous membranes of sintered corundum particles (ALOX-membranes) were used as substrates for polymer functionalization [33,34]. The surface of ALOX-membranes contains hydroxyl groups, which can be used for chemical modification [35].…”

Section: Resultsmentioning

confidence: 99%

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

Stott

Schneider

2020

Beilstein J. Nanotechnol.

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Surface functionalization of porous materials allows for the introduction of additional functionality coupled with high mechanical stability of functionalized inner pores. Herein, we investigate the surface-initiated ring-opening polymerization (SI-ROP) of phenylalanine-N-carboxyanhydride (PA-NCA) in porous alumina membranes (ALOX-membranes) with respect to different solvent mixtures (tetrahydrofuran (THF) and dichloromethane (DCM)). It was found that increasing the volume fraction of DCM leads to an increasing amount of fibrillar polymer structures within the porous ALOX-membrane. A three-dimensional fibrillar network with intrinsic porosity was formed in DCM, whereas in THF, a dense and smooth polypeptide film was observed. A post-treatment with a mixture of chloroform and dichloroacetic acid leads to rearrangement of the morphology of the grafted polymer films. The analysis by scanning electron microscopy (SEM), near-infrared spectroscopy (NIR) and contact angle measurements (CA) reveals a change in morphology of the grafted polymer films, which is due to the rearrangement of the secondary structure of the polypeptides. No significant loss of the surface-grafted polypeptides was determined by thermogravimetric (TG) measurements, which indicates that the change in morphology of the polymer films is solely a result of a conformational change of the surface-grafted polypeptides. Furthermore, adsorption of a test analyte (chloroanilic acid) was investigated with respect to different polymer functionalization schemes for reversed-phase solid phase extraction applications. The adsorption capability of the functionalized composite membrane was increased from 16.7% to 38.1% compared to the native ALOX-membrane.

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Highly porous corundum–mullite ceramics – Structure and properties

Cited by 37 publications

References 11 publications

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Thermal shock resistance of porous Al2O3-mullite ceramics

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

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Highly porous corundum–mullite ceramics – Structure and properties

Cited by 37 publications

References 11 publications

Preparation of porous Al2O3 ceramics by starch consolidation casting method

Preparation of porous Al2O3 ceramics by starch consolidation casting method

Thermal shock resistance of porous Al2O3-mullite ceramics

A 3D-polyphenylalanine network inside porous alumina: Synthesis and characterization of an inorganic–organic composite membrane

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Preparation of porous Al₂O₃ ceramics by starch consolidation casting method

Preparation of porous Al₂O₃ ceramics by starch consolidation casting method