Details
| Originalsprache | Englisch |
|---|---|
| Aufsatznummer | 916 |
| Fachzeitschrift | SN Applied Sciences |
| Jahrgang | 1 |
| Ausgabenummer | 8 |
| Publikationsstatus | Veröffentlicht - 25 Juli 2019 |
Abstract
The main objective of this work is to investigate the influence of the curing temperature on the properties of poly(phospho-ferro-siloxo) networks using laterite as an aluminoferrosilicate source and phosphoric acid as a hardener. Poly(phospho-ferro-siloxo) networks were obtained by mixing phosphoric acid with calcined laterite and the fresh specimens were cast in different moulds. The prepared specimens were cured at room temperature, 40, 50, 60, 70, 80 and 90 °C for 24 h and then maintained at an ambient atmosphere of the laboratory for 28 days. The poly(phospho-ferro-siloxo) networks cured at room temperature were demoulded after 3 days due to its low rate of the hardening process. The obtained poly(phospho-ferro-siloxo) networks were characterized by measuring the compressive strengths, apparent density, X-ray diffractometry, infrared spectroscopy and scanning electron microscopy. The results show that the values of the compressive strengths of the final products decrease from room temperature (83 MPa) to 40 °C (48 MPa) and increase from 40 to 50 °C (65 MPa) afterwards decrease from 50 to 90 °C (24 MPa). It was found that the highest value of the compressive strength of poly(phospho-ferro-siloxo) network is around 83 MPa corresponding to the specimen demoulded after 3 days and maintained at room temperature for 28 days. Whereas, when the polycondensation reaction is accelerated, the most convenient curing temperature is around 50 °C which belongs to a compressive strength at about 65 MPa. Graphic abstract: [Figure not available: see fulltext.]
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in: SN Applied Sciences, Jahrgang 1, Nr. 8, 916, 25.07.2019.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Influence of the curing temperature on the properties of poly(phospho-ferro-siloxo) networks from laterite
AU - Bewa, Christelle N.
AU - Tchakouté, Hervé K.
AU - Rüscher, Claus H.
AU - Authority, Local Materials
AU - Leonelli, Cristina
N1 - Funding information: Ms Christelle Nobouassia Bewa gratefully acknowledges the Alexander von Humboldt Foundation for its financial support for this work under Grant No. KAM/1208243 NW. The authors would also like to thank Mr Valerie Petrov for SEM observations and Dr. Mark Bediako for XRF measurement.
PY - 2019/7/25
Y1 - 2019/7/25
N2 - The main objective of this work is to investigate the influence of the curing temperature on the properties of poly(phospho-ferro-siloxo) networks using laterite as an aluminoferrosilicate source and phosphoric acid as a hardener. Poly(phospho-ferro-siloxo) networks were obtained by mixing phosphoric acid with calcined laterite and the fresh specimens were cast in different moulds. The prepared specimens were cured at room temperature, 40, 50, 60, 70, 80 and 90 °C for 24 h and then maintained at an ambient atmosphere of the laboratory for 28 days. The poly(phospho-ferro-siloxo) networks cured at room temperature were demoulded after 3 days due to its low rate of the hardening process. The obtained poly(phospho-ferro-siloxo) networks were characterized by measuring the compressive strengths, apparent density, X-ray diffractometry, infrared spectroscopy and scanning electron microscopy. The results show that the values of the compressive strengths of the final products decrease from room temperature (83 MPa) to 40 °C (48 MPa) and increase from 40 to 50 °C (65 MPa) afterwards decrease from 50 to 90 °C (24 MPa). It was found that the highest value of the compressive strength of poly(phospho-ferro-siloxo) network is around 83 MPa corresponding to the specimen demoulded after 3 days and maintained at room temperature for 28 days. Whereas, when the polycondensation reaction is accelerated, the most convenient curing temperature is around 50 °C which belongs to a compressive strength at about 65 MPa. Graphic abstract: [Figure not available: see fulltext.]
AB - The main objective of this work is to investigate the influence of the curing temperature on the properties of poly(phospho-ferro-siloxo) networks using laterite as an aluminoferrosilicate source and phosphoric acid as a hardener. Poly(phospho-ferro-siloxo) networks were obtained by mixing phosphoric acid with calcined laterite and the fresh specimens were cast in different moulds. The prepared specimens were cured at room temperature, 40, 50, 60, 70, 80 and 90 °C for 24 h and then maintained at an ambient atmosphere of the laboratory for 28 days. The poly(phospho-ferro-siloxo) networks cured at room temperature were demoulded after 3 days due to its low rate of the hardening process. The obtained poly(phospho-ferro-siloxo) networks were characterized by measuring the compressive strengths, apparent density, X-ray diffractometry, infrared spectroscopy and scanning electron microscopy. The results show that the values of the compressive strengths of the final products decrease from room temperature (83 MPa) to 40 °C (48 MPa) and increase from 40 to 50 °C (65 MPa) afterwards decrease from 50 to 90 °C (24 MPa). It was found that the highest value of the compressive strength of poly(phospho-ferro-siloxo) network is around 83 MPa corresponding to the specimen demoulded after 3 days and maintained at room temperature for 28 days. Whereas, when the polycondensation reaction is accelerated, the most convenient curing temperature is around 50 °C which belongs to a compressive strength at about 65 MPa. Graphic abstract: [Figure not available: see fulltext.]
KW - Compressive strength
KW - Curing temperature
KW - Laterite
KW - Phosphoric acid
KW - Poly(phospho-ferro-siloxo) networks
UR - http://www.scopus.com/inward/record.url?scp=85092731311&partnerID=8YFLogxK
U2 - 10.1007/s42452-019-0975-5
DO - 10.1007/s42452-019-0975-5
M3 - Article
AN - SCOPUS:85092731311
VL - 1
JO - SN Applied Sciences
JF - SN Applied Sciences
IS - 8
M1 - 916
ER -