Structure analysis of geopolymers synthesized from clay originated from Serbia
The paper presents chemical and structural analysis of geopolymer materials which are obtained by alkali-activated calcined clay (metakaolin) originated from Serbia under strictly defined conditions. Characterization of the metakaolin and geopolymers molecular structure has been done using X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The paper presents the possibility of obtaining geopolymer structure and differences in chemical and structural characterization of these materials taking into account the concentration of NaOH as a variable parameter. The results of MALDI analysis of metakaolin and synthesized geopolymer structures using various matrix system: 2,4,6 trihydroxyacetophenone (THAP), α-cyano-4-hydroxycinnamic, 2,6 dihydroxyacetophenone and laser desorption/ionization, have shown that THAP matrix is the most appropriate for analysing these aluminosilicate materials.
KeywordsGeopolymers Porous materials MALDI-TOF FTIR
This work is supported by Ministry of Education, Science and Technological Development of Republic of Serbia [III 45012 and OI 172011]. The experimental work was done under the umbrella of the COST Action CM1302. Our special thanks go to Gordana Jelić, Ph.D. for her assistance in the revision of English language.
- Brinker CJ, Scherer GW (1990) Sol–gel science. Academic Press, New YorkGoogle Scholar
- Duxson P, Lukey GC, Jannie SJ, De Venter V, Mallicoat SW, Kriven WM (2005) Microstructural characterisation of metakaolin-based geopolymers. Ceram Trans 165:71–85Google Scholar
- Rees CA, Provis JL, Lukey GC, Van Deventer JSJ (2007) Attenuated total reflectance fourier transform infrared analysis of fly ash geopolymer gel aging. Langmuir 23:8179Google Scholar
- Ruscher CH, Schulz A, Gougazeh MH, Ritzmann A (2014) Mechanical strength development of geopolymer binder and the effect of quartz content. In: Kriven WM, Wang J, Zhou Y, Gyekenyesi AL (eds) Developments in strategic materials and computational design IV. The American Ceramic Society/Wiley, New York, pp 13–23Google Scholar
- Varga G, Trnik A (2006) Struktura kaolinitu a metakaolinitu Silikatnik. 3:11–19Google Scholar