Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting
Flat microfiltration mullite (3Al2O32SiO2) membranes were prepared via phase-inversion tape casting method. The sintering temperature has been reduced from 1700°C to 1450°C by adding 3 wt.% of magnesium oxide (MgO) as a sintering aid. The effect of this compound on the membrane properties was system...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-07-01
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| Series: | Journal of Asian Ceramic Societies |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21870764.2021.1952747 |
| _version_ | 1818716765870358528 |
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| author | Rafael Kenji Nishihora Ellen Rudolph Mara Gabriela Novy Quadri Dachamir Hotza Kurosch Rezwan Michaela Wilhelm |
| author_facet | Rafael Kenji Nishihora Ellen Rudolph Mara Gabriela Novy Quadri Dachamir Hotza Kurosch Rezwan Michaela Wilhelm |
| author_sort | Rafael Kenji Nishihora |
| collection | DOAJ |
| description | Flat microfiltration mullite (3Al2O32SiO2) membranes were prepared via phase-inversion tape casting method. The sintering temperature has been reduced from 1700°C to 1450°C by adding 3 wt.% of magnesium oxide (MgO) as a sintering aid. The effect of this compound on the membrane properties was systematically investigated. The presence of MgO promoted at the same time a change in membrane morphology resulting in a symmetric structure, which is opposite to the asymmetrical structure obtained for mullite membranes prepared without this sintering aid. Porosity of 38.9% and average pore size of 2.33 μm was achieved. Water and n-heptane vapor adsorption analysis showed an increment in hydrophilic behavior due to MgO. The reduction of sintering temperature from 1700°C (MgO free) to 1450°C (MgO added) produced mechanical stable samples with flexural strength about 15.3 MPa. The membrane was resistant enough to withstand the water flux permeation test up to 3 bar. Compared to the pure mullite membranes, the MgO containing sample displayed higher water permeation fluxes, which might be related to both the larger superficial pore size and its hydrophilicity. |
| first_indexed | 2024-12-17T19:24:28Z |
| format | Article |
| id | doaj.art-6191670c944747579a5f5d6971606692 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-12-17T19:24:28Z |
| publishDate | 2021-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-6191670c944747579a5f5d69716066922022-12-21T21:35:25ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642021-07-01931228123810.1080/21870764.2021.19527471952747Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape castingRafael Kenji Nishihora0Ellen Rudolph1Mara Gabriela Novy Quadri2Dachamir Hotza3Kurosch Rezwan4Michaela Wilhelm5University of BremenUniversity of BremenFederal University of Santa Catarina (UFSC)Federal University of Santa Catarina (UFSC)University of BremenUniversity of BremenFlat microfiltration mullite (3Al2O32SiO2) membranes were prepared via phase-inversion tape casting method. The sintering temperature has been reduced from 1700°C to 1450°C by adding 3 wt.% of magnesium oxide (MgO) as a sintering aid. The effect of this compound on the membrane properties was systematically investigated. The presence of MgO promoted at the same time a change in membrane morphology resulting in a symmetric structure, which is opposite to the asymmetrical structure obtained for mullite membranes prepared without this sintering aid. Porosity of 38.9% and average pore size of 2.33 μm was achieved. Water and n-heptane vapor adsorption analysis showed an increment in hydrophilic behavior due to MgO. The reduction of sintering temperature from 1700°C (MgO free) to 1450°C (MgO added) produced mechanical stable samples with flexural strength about 15.3 MPa. The membrane was resistant enough to withstand the water flux permeation test up to 3 bar. Compared to the pure mullite membranes, the MgO containing sample displayed higher water permeation fluxes, which might be related to both the larger superficial pore size and its hydrophilicity.http://dx.doi.org/10.1080/21870764.2021.1952747ceramic membranesphase-inversionmullitemgosintering aid |
| spellingShingle | Rafael Kenji Nishihora Ellen Rudolph Mara Gabriela Novy Quadri Dachamir Hotza Kurosch Rezwan Michaela Wilhelm Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting Journal of Asian Ceramic Societies ceramic membranes phase-inversion mullite mgo sintering aid |
| title | Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting |
| title_full | Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting |
| title_fullStr | Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting |
| title_full_unstemmed | Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting |
| title_short | Effect of MgO on the microstructure and properties of mullite membranes made by phase-inversion tape casting |
| title_sort | effect of mgo on the microstructure and properties of mullite membranes made by phase inversion tape casting |
| topic | ceramic membranes phase-inversion mullite mgo sintering aid |
| url | http://dx.doi.org/10.1080/21870764.2021.1952747 |
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