Gelcasting of alumina with a new monomer synthesized from glucose

Bednarek, Paulina; Szafran, M.; Sakka, Yoshio; Mizerski, Tadeusz

doi:10.1016/j.jeurceramsoc.2010.01.036

Cited by 47 publications

(30 citation statements)

References 18 publications

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“…They are non-toxic, watersoluble, inexpensive and renewable substances. Moreover, derivatives of monosaccharides can be used as organic monomers in gelcasting process, they can be easily removed from samples during binder decomposition process and they have the positive influence on mechanical strength of green bodies [15].…”

Section: Introductionmentioning

confidence: 99%

“…The synthesis of these compounds have been elaborated by authors and described elsewhere as well as the properties of obtained ceramic parts [15][16][17]. Saccharides have many hydroxyl groups in a molecule; thereby the cross-linked polymer network can be created by forming hydrogen bonds between polymeric chains.…”

Section: Introductionmentioning

confidence: 99%

“…The samples were composed of alumina powder with selected monomers and obtained by gelcasting shaping technique. The mentioned monosaccharides derivatives have been chosen due to their positive influence on the properties of both ceramic suspensions and green bodies, as described elsewhere [15]. DTA/TG/MS analysis allows to recognize decomposition products of glucose and fructose derivatives which is important concerning practical application of these monomers and environmental issues.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…Then the option of thermally activated polymerization reaction, using polysaccharides like agar, agarose or carragenan 23) has been also reported, or the use of a traditional binder such as PVA paired with a furan ring, 24) as well as new attempts to synthesize monomers derivated from the glucose molecule. 25) But not only aqueous formulations have received attention. Non-aqueous gelcasting systems 26),27) have been also investigating, triggering the new range of possibilities of application of this efficient shaping technique.…”

Section: Gelcastingmentioning

confidence: 99%

Recent trends in shape forming from colloidal processing: A review

Tallón

Franks

2011

J. Ceram. Soc. Japan

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Shaping ceramic materials is a research area which has continuing innovation and excellence. Dry processing routes gave way to colloidal techniques enabling the preparation of more complex shapes for a wide and growing field of applications. Both dense and porous ceramics with improved properties can be produced. The development of colloidal processing led to the creation of the near-net-shaping concept, performed through slip casting, gelcasting and freeze casting. Even though these concepts have been used for the last few decades, different trends and combinations of these techniques are refreshing the processing strategies in recent years. New chemistries and concepts continue to emerge. This paper creates an overview of the recent trends in near-net-shaping routes, having a deeper look into gelcasting and freeze casting, since both processes are used in the preparation of tailored and custom dense and porous ceramics.

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“…Hydroxyethyl methacrylate (HEMA) [6], glycerol monoacrylate [7], acrylic acid [8], N,N-dimethyl acrylamide (DMAA) [9], epoxy resin [10], urea formaldehyde [11] and dimethylformamide [12], as well as alternative natural gelling agents, such as, for example, agar [13], agarose [13], carrageenan gums [13], egg white [14], chitosan [15], gelatin [16,17], sodium alginate [18], polyvinyl alcohol [19], glutin-urea [20] and glucose [21] have been extensively tested in these last years.…”

Section: Introductionmentioning

confidence: 99%

Development and mechanical characterization of novel ceramic foams fabricated by gel-casting

Tulliani

Lombardi

Palmero

et al. 2013

Journal of the European Ceramic Society

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Porous ceramic materials are of considerable interest for a variety of chemical and industrial applications in extremely harsh conditions, particularly at very high temperatures for long times. A modified gelcasting process employing agar as a natural gelling agent and polyethylene spheres as pore formers was exploited to produce porous ceramic bodies. Alumina and alumina-ZrO 2 (AZ) powders were used to prepare samples having a porosity of about 65-70-75 vol%. The composite powder was produced by a surface modification route, i.e. by coating a well dispersed alphaalumina powder with a zirconium chloride aqueous solution. Upon thermal treatment, ultra-fine tetragonal zirconia grains formed on the surface of the alumina particles. SEM observations and image analysis were used to characterize the microstructure of porous samples and uniaxial compressive tests were used to measure their mechanical behavior.

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Gelcasting of alumina with a new monomer synthesized from glucose

Cited by 47 publications

References 18 publications

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

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

Recent trends in shape forming from colloidal processing: A review

Development and mechanical characterization of novel ceramic foams fabricated by gel-casting

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