Using Geopolymer Technology on Synthesizing Leucite Ceramics

The aim of this study is to assess the process of synthesizing potassium-based geopolymers (KGL) into leucite ceramics with regard to five variables, namely, alkaline solution ratio (R), sintering time (S), calcining temperature (T), mixing time (M), and curing time (C). Under these conditions, the...

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Autores principales:	Yi-Che Hsieh, Wei-Hao Lee, Pin-Hsun Liao
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	potassium-based geopolymers leucite ceramics Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/fff4259ba38547708953f296bcf6c489
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spelling	oai:doaj.org-article:fff4259ba38547708953f296bcf6c4892021-11-11T18:41:40ZUsing Geopolymer Technology on Synthesizing Leucite Ceramics10.3390/polym132136212073-4360https://doaj.org/article/fff4259ba38547708953f296bcf6c4892021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4360/13/21/3621https://doaj.org/toc/2073-4360The aim of this study is to assess the process of synthesizing potassium-based geopolymers (KGL) into leucite ceramics with regard to five variables, namely, alkaline solution ratio (R), sintering time (S), calcining temperature (T), mixing time (M), and curing time (C). Under these conditions, the specimens were tested by the viscosity test, the mechanical properties test, X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM) to understand the geopolymerization reactions and the characteristics of the KGL network. The results indicate that a KOH to K<sub>2</sub>O/SiO<sub>2</sub> ratio of 1:1 promotes the reaction within metakaolin. XRD analysis of the KGL shows that, when the temperature is 1100 °C, the phase transforms into the leucite phase. Moreover, XRD analysis, mechanical properties, and FTIR all indicate improved characteristics when the curing time increases from 1 to 8 h. This might be attributed to the enhancement of the strong interaction between the matrix and the alkaline solution upon achieving adequate time to complete the geopolymerization process and forming a more stable three-dimensional structure. The formulation which formed the purest leucite phase consisted of: a 1:1 alkaline solution ratio, 10 min mixing time, 8 h curing time, 1200 °C calcining temperature, and 2 h sintering time.Yi-Che HsiehWei-Hao LeePin-Hsun LiaoMDPI AGarticlepotassium-based geopolymersleuciteceramicsOrganic chemistryQD241-441ENPolymers, Vol 13, Iss 3621, p 3621 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	potassium-based geopolymers leucite ceramics Organic chemistry QD241-441
spellingShingle	potassium-based geopolymers leucite ceramics Organic chemistry QD241-441 Yi-Che Hsieh Wei-Hao Lee Pin-Hsun Liao Using Geopolymer Technology on Synthesizing Leucite Ceramics
description	The aim of this study is to assess the process of synthesizing potassium-based geopolymers (KGL) into leucite ceramics with regard to five variables, namely, alkaline solution ratio (R), sintering time (S), calcining temperature (T), mixing time (M), and curing time (C). Under these conditions, the specimens were tested by the viscosity test, the mechanical properties test, X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM) to understand the geopolymerization reactions and the characteristics of the KGL network. The results indicate that a KOH to K<sub>2</sub>O/SiO<sub>2</sub> ratio of 1:1 promotes the reaction within metakaolin. XRD analysis of the KGL shows that, when the temperature is 1100 °C, the phase transforms into the leucite phase. Moreover, XRD analysis, mechanical properties, and FTIR all indicate improved characteristics when the curing time increases from 1 to 8 h. This might be attributed to the enhancement of the strong interaction between the matrix and the alkaline solution upon achieving adequate time to complete the geopolymerization process and forming a more stable three-dimensional structure. The formulation which formed the purest leucite phase consisted of: a 1:1 alkaline solution ratio, 10 min mixing time, 8 h curing time, 1200 °C calcining temperature, and 2 h sintering time.
format	article
author	Yi-Che Hsieh Wei-Hao Lee Pin-Hsun Liao
author_facet	Yi-Che Hsieh Wei-Hao Lee Pin-Hsun Liao
author_sort	Yi-Che Hsieh
title	Using Geopolymer Technology on Synthesizing Leucite Ceramics
title_short	Using Geopolymer Technology on Synthesizing Leucite Ceramics
title_full	Using Geopolymer Technology on Synthesizing Leucite Ceramics
title_fullStr	Using Geopolymer Technology on Synthesizing Leucite Ceramics
title_full_unstemmed	Using Geopolymer Technology on Synthesizing Leucite Ceramics
title_sort	using geopolymer technology on synthesizing leucite ceramics
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fff4259ba38547708953f296bcf6c489
work_keys_str_mv	AT yichehsieh usinggeopolymertechnologyonsynthesizingleuciteceramics AT weihaolee usinggeopolymertechnologyonsynthesizingleuciteceramics AT pinhsunliao usinggeopolymertechnologyonsynthesizingleuciteceramics
_version_	1718431801424216064

Using Geopolymer Technology on Synthesizing Leucite Ceramics

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