Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • C. Banenzoué
  • C. N. Bewa
  • D. Fotio
  • H. K. Tchakouté
  • B. T. Tchanga
  • C. H. Rüscher

Organisationseinheiten

Externe Organisationen

  • University of Yaounde I
  • University of Douala
  • University of Maroua
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Details

OriginalspracheEnglisch
Seiten (von - bis)452-470
Seitenumfang19
FachzeitschriftJournal of the Korean Ceramic Society
Jahrgang58
Ausgabenummer4
Frühes Online-Datum12 Mai 2021
PublikationsstatusVeröffentlicht - Juli 2021

Abstract

The aim of this investigation is to compare the properties of poly(phospho-siloxo) and poly(sialate-siloxo) networks. Commercial sodium waterglass and sodium waterglass from rice husk ash were used as alkaline reagents and phosphoric acid with molarities 8 and 10 M was used as acid reagents. Local metakaolin and commercial ones containing 0.99 and 0.0% of Fe2O3, respectively, were used as aluminosilicate sources. The physical properties of the prepared poly(phospho-siloxo) and poly(sialate-siloxo) networks were monitored by measuring the apparent and absolute density. The microstructures were assessed by scanning electron microscopy and mercury intrusion porosimetry. The engineering property was checked by the determination of their compressive strengths. The results indicated that the apparent densities of poly(phospho-siloxo) and poly(sialate-siloxo) networks are in the ranges 1.918–2.177 and 1.814–1.959 g/cm3, respectively, while their absolute densities are not significantly different. Their compressive strengths are ranging from 14.21 to 30.03 and 50.22 to 75.77 MPa, respectively. The average pore diameters of the specimens from acid reagents are between 30.0 and 83.9 nm whereas those from alkaline reagents are between 8.3 and 14.8 nm. The log differential intrusion versus pore size diameters showed that the obtained products using acid and alkaline solutions are ranging from 6000 to 110,000 nm and 5.59 to 13.84 nm, respectively. This indicates that poly(phospho-siloxo) and poly(sialate-siloxo) networks are macroporous and mesoporous materials, respectively. It was found that the chemical and mineralogical compositions and the degree of the purity of the aluminosilicate source could significantly affect the physical properties and microstructures of poly(phospho-siloxo) network.

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Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins. / Banenzoué, C.; Bewa, C. N.; Fotio, D. et al.
in: Journal of the Korean Ceramic Society, Jahrgang 58, Nr. 4, 07.2021, S. 452-470.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Banenzoué, C, Bewa, CN, Fotio, D, Tchakouté, HK, Tchanga, BT & Rüscher, CH 2021, 'Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins', Journal of the Korean Ceramic Society, Jg. 58, Nr. 4, S. 452-470. https://doi.org/10.1007/s43207-021-00122-8
Banenzoué, C., Bewa, C. N., Fotio, D., Tchakouté, H. K., Tchanga, B. T., & Rüscher, C. H. (2021). Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins. Journal of the Korean Ceramic Society, 58(4), 452-470. https://doi.org/10.1007/s43207-021-00122-8
Banenzoué C, Bewa CN, Fotio D, Tchakouté HK, Tchanga BT, Rüscher CH. Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins. Journal of the Korean Ceramic Society. 2021 Jul;58(4):452-470. Epub 2021 Mai 12. doi: 10.1007/s43207-021-00122-8
Banenzoué, C. ; Bewa, C. N. ; Fotio, D. et al. / Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins. in: Journal of the Korean Ceramic Society. 2021 ; Jahrgang 58, Nr. 4. S. 452-470.
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title = "Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins",
abstract = "The aim of this investigation is to compare the properties of poly(phospho-siloxo) and poly(sialate-siloxo) networks. Commercial sodium waterglass and sodium waterglass from rice husk ash were used as alkaline reagents and phosphoric acid with molarities 8 and 10 M was used as acid reagents. Local metakaolin and commercial ones containing 0.99 and 0.0% of Fe2O3, respectively, were used as aluminosilicate sources. The physical properties of the prepared poly(phospho-siloxo) and poly(sialate-siloxo) networks were monitored by measuring the apparent and absolute density. The microstructures were assessed by scanning electron microscopy and mercury intrusion porosimetry. The engineering property was checked by the determination of their compressive strengths. The results indicated that the apparent densities of poly(phospho-siloxo) and poly(sialate-siloxo) networks are in the ranges 1.918–2.177 and 1.814–1.959 g/cm3, respectively, while their absolute densities are not significantly different. Their compressive strengths are ranging from 14.21 to 30.03 and 50.22 to 75.77 MPa, respectively. The average pore diameters of the specimens from acid reagents are between 30.0 and 83.9 nm whereas those from alkaline reagents are between 8.3 and 14.8 nm. The log differential intrusion versus pore size diameters showed that the obtained products using acid and alkaline solutions are ranging from 6000 to 110,000 nm and 5.59 to 13.84 nm, respectively. This indicates that poly(phospho-siloxo) and poly(sialate-siloxo) networks are macroporous and mesoporous materials, respectively. It was found that the chemical and mineralogical compositions and the degree of the purity of the aluminosilicate source could significantly affect the physical properties and microstructures of poly(phospho-siloxo) network.",
keywords = "Metakaolins, Microstructures, Phosphoric acid, Poly(phospho-siloxo), Poly(sialate-siloxo), Sodium waterglass",
author = "C. Banenzou{\'e} and Bewa, {C. N.} and D. Fotio and Tchakout{\'e}, {H. K.} and Tchanga, {B. T.} and R{\"u}scher, {C. H.}",
note = "Funding Information: Dr. Tchakout{\'e} Kouamo Herv{\'e} gratefully acknowledges the Alexander von Humboldt Foundation for its financial support to this work under grant N KAM/1155741 GFHERMES-P. The authors would like to thank Mr Valerie Petrov for SEM observations. ° ",
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Download

TY - JOUR

T1 - Physical properties and microstructures of poly(phospho-siloxo) and poly(sialate-siloxo) networks from two metakaolins

AU - Banenzoué, C.

AU - Bewa, C. N.

AU - Fotio, D.

AU - Tchakouté, H. K.

AU - Tchanga, B. T.

AU - Rüscher, C. H.

N1 - Funding Information: Dr. Tchakouté Kouamo Hervé gratefully acknowledges the Alexander von Humboldt Foundation for its financial support to this work under grant N KAM/1155741 GFHERMES-P. The authors would like to thank Mr Valerie Petrov for SEM observations. °

PY - 2021/7

Y1 - 2021/7

N2 - The aim of this investigation is to compare the properties of poly(phospho-siloxo) and poly(sialate-siloxo) networks. Commercial sodium waterglass and sodium waterglass from rice husk ash were used as alkaline reagents and phosphoric acid with molarities 8 and 10 M was used as acid reagents. Local metakaolin and commercial ones containing 0.99 and 0.0% of Fe2O3, respectively, were used as aluminosilicate sources. The physical properties of the prepared poly(phospho-siloxo) and poly(sialate-siloxo) networks were monitored by measuring the apparent and absolute density. The microstructures were assessed by scanning electron microscopy and mercury intrusion porosimetry. The engineering property was checked by the determination of their compressive strengths. The results indicated that the apparent densities of poly(phospho-siloxo) and poly(sialate-siloxo) networks are in the ranges 1.918–2.177 and 1.814–1.959 g/cm3, respectively, while their absolute densities are not significantly different. Their compressive strengths are ranging from 14.21 to 30.03 and 50.22 to 75.77 MPa, respectively. The average pore diameters of the specimens from acid reagents are between 30.0 and 83.9 nm whereas those from alkaline reagents are between 8.3 and 14.8 nm. The log differential intrusion versus pore size diameters showed that the obtained products using acid and alkaline solutions are ranging from 6000 to 110,000 nm and 5.59 to 13.84 nm, respectively. This indicates that poly(phospho-siloxo) and poly(sialate-siloxo) networks are macroporous and mesoporous materials, respectively. It was found that the chemical and mineralogical compositions and the degree of the purity of the aluminosilicate source could significantly affect the physical properties and microstructures of poly(phospho-siloxo) network.

AB - The aim of this investigation is to compare the properties of poly(phospho-siloxo) and poly(sialate-siloxo) networks. Commercial sodium waterglass and sodium waterglass from rice husk ash were used as alkaline reagents and phosphoric acid with molarities 8 and 10 M was used as acid reagents. Local metakaolin and commercial ones containing 0.99 and 0.0% of Fe2O3, respectively, were used as aluminosilicate sources. The physical properties of the prepared poly(phospho-siloxo) and poly(sialate-siloxo) networks were monitored by measuring the apparent and absolute density. The microstructures were assessed by scanning electron microscopy and mercury intrusion porosimetry. The engineering property was checked by the determination of their compressive strengths. The results indicated that the apparent densities of poly(phospho-siloxo) and poly(sialate-siloxo) networks are in the ranges 1.918–2.177 and 1.814–1.959 g/cm3, respectively, while their absolute densities are not significantly different. Their compressive strengths are ranging from 14.21 to 30.03 and 50.22 to 75.77 MPa, respectively. The average pore diameters of the specimens from acid reagents are between 30.0 and 83.9 nm whereas those from alkaline reagents are between 8.3 and 14.8 nm. The log differential intrusion versus pore size diameters showed that the obtained products using acid and alkaline solutions are ranging from 6000 to 110,000 nm and 5.59 to 13.84 nm, respectively. This indicates that poly(phospho-siloxo) and poly(sialate-siloxo) networks are macroporous and mesoporous materials, respectively. It was found that the chemical and mineralogical compositions and the degree of the purity of the aluminosilicate source could significantly affect the physical properties and microstructures of poly(phospho-siloxo) network.

KW - Metakaolins

KW - Microstructures

KW - Phosphoric acid

KW - Poly(phospho-siloxo)

KW - Poly(sialate-siloxo)

KW - Sodium waterglass

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U2 - 10.1007/s43207-021-00122-8

DO - 10.1007/s43207-021-00122-8

M3 - Article

AN - SCOPUS:85105848149

VL - 58

SP - 452

EP - 470

JO - Journal of the Korean Ceramic Society

JF - Journal of the Korean Ceramic Society

SN - 1229-7801

IS - 4

ER -