Physico-mechanical and gas permeability characteristics of kaolin based ceramic membranes prepared with a new pore-forming agent

Obada, David O.; Dodoo‐Arhin, David; Dauda, Mohammed; Anafi, Fatai O.; Ahmed, Abdulkarim S.; Ajayi, O.A.

doi:10.1016/j.clay.2017.09.014

Cited by 53 publications

(18 citation statements)

References 40 publications

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“…Strong dependence of mechanical properties on the level of porosity has been frequently reported for ceramic materials . The tendencies observed in the properties of illite in this study, that is, linearly decreasing Young's modulus, monotonically decreasing Compressive strength, and non‐monotonous dependence of Strain to fracture are consistent with trends typically observed for other ceramic materials .…”

Section: Discussionsupporting

confidence: 90%

“…Strong dependence of mechanical properties on the level of porosity has been frequently reported for ceramic materials. 4,[7][8][9][10][11][12][13][14][45][46][47] The tendencies observed in the properties of illite in this study, that is, linearly decreasing Young's modulus, monotonically decreasing Compressive strength, and non-monotonous dependence of Strain to fracture are consistent with trends typically observed for other ceramic materials. 4,48 To the best knowledge of authors, such data have not been available for illite and, therefore, this study aims to extend the validity of reported dependencies also for this material.…”

Section: Discussionsupporting

confidence: 89%

“…In addition to mechanical performance, plenty of other present‐day applications (ie, thermal insulation, filtration, fuel cell separators, burners, gas sensors, biological media, etc) often require particular control of porosity. Obviously, a good balance between porosity and a variety of desired physical properties must be attained …”

Section: Introductionmentioning

confidence: 99%

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Mechanical properties of illite‐based ceramics with controlled porosity studied by modern in situ techniques

et al. 2019

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Deformation tests combined with modern in situ acoustic emission (AE) and digital image correlation (DIC) techniques were applied to monitor low strain rate compressive behavior of illite‐based ceramics with controlled porosity (P). A strong effect of porosity on the mechanical performance was observed: Young's modulus decreased linearly from 29.4 ± 1.1 GPa (P = 14 vol%) to 3.0 ± 0.5 GPa (P = 55 vol%) and compressive strength decreased from 307 ± 13.6 MPa (P = 14 vol%) to 27.7 ± 1.0 MPa (P = 55 vol%). The AE and DIC techniques revealed a transition from brittle fracture to gradual localized crushing with increasing porosity. The AE signals possessed high‐energy burst‐like characteristics typical of brittle fracture and (micro)cracking. The AE data showed continuous activity from the beginning of loading, suggesting that true elasticity does not occur in this material. The combination of mechanical tests with in situ techniques, therefore, proved to be particularly effective in providing additional information on the deformation dynamics in ceramics.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 89%

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Mechanical properties of illite‐based ceramics with controlled porosity studied by modern in situ techniques

et al. 2019

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“…In a recent paper D.O. Obada et al have confirmed the pore interconnection mechanism associated with pore former addition [56], by using powdery high density polyethelene (PHDPE) as porogen agent. Thus, the authors showed that the addition of sufficient amount of PHDPE (20 wt.% was considered optimum) increases porosity and pore size as well as pore connectivity, owed to the increase of interconnected pores created by pore former burnout which gave rise to an increase of permeability.…”

Section: Pore Former Materialsmentioning

confidence: 95%

Low-cost ceramic membranes: A research opportunity for industrial application

Mestre

Gozalbo

Lorente-Ayza

et al. 2019

Journal of the European Ceramic Society

139

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“…Therefore, commercial hand mold, porcelain slip and porcelain hand mold fired at 1270 ∘ C had the zeta potential values higher than that of bone china slip and bone china hand mold fired at 1270 ∘ C. However, bone china hand mold fired at 1270 ∘ C was the most suitable for natural rubber latex because the zeta potential values of bone china hand mold was close to natural rubber latex at pH 10.5 to form solid gel or latex film casting. The obtained zeta potential was in the range ± 40 to ± 60 mV meaning of good stability whereas the zeta potential was higher than ± 60 mV meaning excellent stability [2,[34][35][36]. In addition, the bone china contained alumina content (41.99%wt) higher than that of porcelain (22.60%wt).…”

Section: Physical and Chemical Properties Of Ceramic Hand Moldsmentioning

confidence: 90%

Alternative of bone china and porcelain as ceramic hand molds for rubber latex glove films formation via dipping process

Tharasana

Wongaunjai

Sornsanee

et al. 2020

Reviews on Advanced Materials Science

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In general, the main compositions of porcelain and bone china composed of 54-65%wt silica (SiO2), 23-34% wt alumina (Al2O3) and 0.2-0.7%wt calcium oxide (CaO) suitable for preparation high quality ceramic products such as soft-hard porcelain products for teeth and bones, bioceramics, IC substrate and magneto-optoelectroceramics. The quality of ceramic hand mold is depended on raw material and its properties (pH, ionic strength, solid-liquid surface tension, particle size distribution, specific surface area, porosity, density, microstructure, weight ratio between solid and water, drying time, and firing temperatures). The suitable firing conditions for porcelain and bone china hand-mold preparation were firing at 1270°C for 10 h which resulted in superior working molds for making latex films from natural and synthetic rubber. The obtained fired porcelain hand molds at 1270°C for 10 h provided good chemical durability (10%NaOH, 5%HCl and 10%wtNaCl), low thermal expansion coefficient (5.8570 × 10−6 (°C−1)), good compressive (179.40 MPa) and good flexural strength (86 MPa). While thermal expansion coefficient, compressive and flexural strength of obtained fired bone china hand molds are equal to 6.9230 × 10−6 (°C−1), 128.40 and 73.70 MPa, respectively, good acid-base-salt resistance, a smooth mold surface, and easy hand mold fabrication. Both obtained porcelain and bone china hand molds are a low production cost, making them suitable for natural and synthetic rubber latex glove formation.

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Physico-mechanical and gas permeability characteristics of kaolin based ceramic membranes prepared with a new pore-forming agent

Cited by 53 publications

References 40 publications

Mechanical properties of illite‐based ceramics with controlled porosity studied by modern in situ techniques

Mechanical properties of illite‐based ceramics with controlled porosity studied by modern in situ techniques

Low-cost ceramic membranes: A research opportunity for industrial application

Alternative of bone china and porcelain as ceramic hand molds for rubber latex glove films formation via dipping process

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