Structure analysis of geopolymers synthesized from clay originated from Serbia |
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| Authors: | Sne?ana S Nenadovi? Ljiljana M Kljajevi? Maja A Ne?i? Marijana ? Petkovi? Katarina V Trivunac Vladimir B Pavlovi? |
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| Institution: | 1.Laboratory for Materials Sciences, Institute of Nuclear Sciences “Vin?a”,University of Belgrade,Belgrade,Serbia;2.Department of Physical Chemistry, Institute of Nuclear Sciences “Vin?a”,University of Belgrade,Belgrade,Serbia;3.Faculty of Technology and Metallurgy,University of Belgrade,Belgrade,Serbia;4.Institute of Technical Sciences of the Serbian Academy of Sciences and Arts,University of Belgrade,Belgrade,Serbia |
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| Abstract: | 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. |
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