Ceramic forming using enzyme catalyzed reactions

Gauckler, Ludwig J.; Graule, Th.; Baader, F.H.

doi:10.1016/s0254-0584(99)00117-0

Cited by 190 publications

(196 citation statements)

References 52 publications

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“…The short-chain amphiphiles modify in situ the wetting behavior of the particles' surfaces, as in a Pickering emulsion. Ultrastable wet foams can be produced by direct foaming using particles instead of surfactants as foams stabilizers [16,19,25]. Porous ceramics' properties are also highly influenced by their chemical compositions and microstructures, with porosity, pore morphology, and size distribution being tailored by different compositions, different physical structures of the starting materials, and the use of different amphiphiles [30][31][32][33][34][35][36].…”

Section: Direct Foamingmentioning

confidence: 99%

“…7). Tailoring particles' contact angles via modification of chemical composition enables the creation of foams with a variety of functionalities [19]. Contact angle depends on surface chemistry, roughness, impurities, particle size, and fluid phase composition.…”

Section: Contact Angle and Surface Tensionmentioning

confidence: 99%

“…The stabilization and destabilization mechanisms of coated bubbles exposed to surfactants to produce metallic foams are discussed elsewhere [18]. Colombo et al [19] discussed different novel processing methods for cellular ceramics, including the burning out of fugitive pore formers. Established methods of producing porous ceramics employ the burning out of templates.…”

Section: Introductionmentioning

confidence: 99%

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Porous Ceramics

Sarkar¹,

Kim²

2015

Advanced Ceramic Processing

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The unique chemical composition and microstructure of porous ceramics enable the ceramic products used in a number of applications such as filtration of molten metals and hot corrosive gases, high-temperature thermal insulation, support for catalytic reactions, filtration of diesel engine exhaust gases, etc. These applications take advantage of special characteristics of porous ceramics such as low thermal mass, low thermal conductivity, controlled permeability, high surface area, low density, and high specific strength. In this chapter, we emphasize on direct foaming method, a simple and versatile approach that allows fabrication of porous ceramics with tailored microstructure along with distinctive properties. Foam stability is achieved upon controlled addition of amphiphiles to the colloidal suspension, which induce in situ hydrophobization, allowing the wet foam to resist coarsening upon drying and sintering.

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Section: Direct Foamingmentioning

confidence: 99%

Section: Contact Angle and Surface Tensionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Porous Ceramics

Sarkar¹,

Kim²

2015

Advanced Ceramic Processing

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“…46,47 These techniques rely on either physical or chemical approaches to induce gelation in a concentrated colloidal suspension ( eff Ն 0.5). Gelation denotes the transition from a liquid (sol) to a solid (gel) state that occurs in the absence of fluid removal.…”

Section: (3) Consolidation Via Gelationmentioning

confidence: 99%

Colloidal Processing of Ceramics

Lewis

2000

Journal of the American Ceramic Society

1,205

640

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Colloidal processing of ceramics is reviewed with an emphasis on interparticle forces, suspension rheology, consolidation techniques, and drying behavior. Particular attention is given to the scientific concepts that underpin the fabrication of particulate-derived ceramic components. The complex interplay between suspension stability and its structural evolution during colloidal processing is highlighted.

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“…There are many shaping techniques in ceramic technology but most of them have important disadvantages such as nonhomogeneity of powder compacts, size and geometry limit of produced element, use of high pressure, long binder burnout and high costs. In order to overcome these limitations some novel shaping technologies have been recently developed on the basis of colloidal processing of ceramic powders, for example gelcasting [1][2][3], monomer based sol-gel, electrophoretic deposition [4,5] or direct coagulation casting [6,7]. Gelcasting allows obtaining high-quality, complex-shaped ceramic elements by means of an in situ polymerization, through which a macromolecular network is created to hold ceramic particles together (Fig.…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition of monosaccharides derivatives applied in ceramic gelcasting process investigated by the coupled DTA/TG/MS analysis

Bednarek

Szafran

2012

J Therm Anal Calorim

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The paper reports the decomposition of saccharides derivatives in comparison to commercial substances during the process of binder removal from ceramic samples. The saccharides derivatives are polymers synthesized from glucose and fructose with acryloyl group in the sugar molecule. The synthesized compounds played the role of binder in the shaping of ceramic powders by gelcasting method. The method belongs to colloidal processes and allows to produce ceramic elements of complicated geometry. As ceramic powder Al 2 O 3 was used. The thermal analysis have been done on apparatus coupled with mass spectrometer. MS analysis showed what types of gasses are released to the atmosphere during the thermal decomposition of polymers. The obtained results showed important differences in decomposition of polymers obtained from commercial acrylamide, 2-hydroxyethyl acrylate and N,N 0 -methylenebisacrylamide in comparison to synthesized glucose and fructose derivatives. The measurements allowed to establish the sintering program of the green ceramic samples and evaluate whether harmful NO x gases are released to the atmosphere.

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Ceramic forming using enzyme catalyzed reactions

Cited by 190 publications

References 52 publications

Porous Ceramics

Porous Ceramics

Colloidal Processing of Ceramics

Thermal decomposition of monosaccharides derivatives applied in ceramic gelcasting process investigated by the coupled DTA/TG/MS analysis

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