Structural and electrical properties of geopolymer materials based on different precursors

Kljajević, Ljiljana

Structural and electrical properties of geopolymer materials based on different precursors : (kaolin, bentonite and diatomite) / Ljiljana Kljajević ... [et al.]. -- Geopolymers (GP) were successfully synthesized from metabentonite (MB), metadiatomite (MD) and metakaolinite (MK). Characterization of their phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. A SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel, and it is significantly different from the micrographs of the other two geopolymer samples, GPMB and GPMK. A considerable amount of unreacted particles, as well as the presence of pores in the geopolymer matrix of GPMK and GPMD, indicate an incomplete reaction in the system. Aluminosilicate inorganic polymers, geopolymers, are quasi solid electrolytes which possess a high electrical conductivity at room temperature in relation to materials of similar chemical composition. The highest conductivity was found for the sample obtained from GPMK, amounting to 2.14 x 10(-2) Omega(-1)cm(-1) at 700 degrees C. The corresponding activation energies of conductivity for this sample amou

In Macedonian Journal of Chemistry and Chemical Engineering. -- Skopje : Sojuz na hemičarite i tehnolozite na Makedonija, 2019. -- ISSN 1857-5552. -- ISSN 1857-5625. -- Vol. 38, no. 2 (2019), pp. 283-292