Open AccessThe influence of thermodynamic parameters on alkaline activator of geopolymers and structure of geopolymers
Author(s) -
Milan Ivanović,
Snežaenadović,
Vera P. Pavlović,
Ivona R. Radović,
Mirjana Lj. Kijevčanin,
Vladimir B. Pavlović,
Ljiljana Kljajević
Publication year - 2021
Publication title -
macedonian journal of chemistry and chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.19
H-Index - 16
eISSN - 1857-5625
pISSN - 1857-5552
DOI - 10.20450/mjcce.2021.2127
Subject(s) - raman spectroscopy , fourier transform infrared spectroscopy , materials science , scanning electron microscope , geopolymer , metakaolin , calcination , spectroscopy , kaolinite , analytical chemistry (journal) , polymerization , chemical engineering , chemistry , composite material , fly ash , polymer , organic chemistry , metallurgy , catalysis , physics , quantum mechanics , optics , engineering
In this research, the starting precursor material is metakaolin, which was obtained by calcining domestic kaolinite clay. Thermodynamic parameters: densities, viscosities, speed of sound and refractive index of four series of alkaline activatorswere determined over the temperature range from 15 to 60oC of process of geopolymerization. The samples were characterized by X-ray diffraction (XRD), FTIR and Raman Spectroscopy, Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray (EDX) Spectroscopy. Results of FTIR analysis correlated with results of Raman Spectroscopy. Due to the polymerization process the changes in the phonon spectrum is confirmed. The different concentrations of activators do not change notably the Si/Al ratio.