Structure analysis of geopolymers synthesized from clay originated from Serbia
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AuthorsNenadović, Snežana S.
Kljajević, Ljiljana M.
Nešić, Maja A.
Trivunac, Katarina V.
Pavlović, Vladimir B.
Article (Published version)
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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 aluminosilica...te materials.
Keywords:geopolymers / porous materials / MALDI-TOF / FTIR
Source:Environmental Earth Sciences, 2017, 79, 76-
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