TITLE:
Zinc and Silver Salts-Containing Lamellar Titanium Phosphate: A Multifunctional Filler
AUTHORS:
Enzo Erbisti Garcia, Gerson Alberto Valencia Albitres, Daniela França Silva Freitas, Danielle Mattos Mariano, Luis Cláudio Mendes
KEYWORDS:
Titanium Phosphate, Intercalation, Pyromellitic Acid, Zinc Acetate, Silver Nitrate, Ethylamine
JOURNAL NAME:
Materials Sciences and Applications,
Vol.13 No.6,
June
20,
2022
ABSTRACT: Zinc and silver compounds have been studied because they have ultraviolet light barrier properties and bactericidal action, respectively. Materials with multifunctional characteristics have been sought to produce polymeric nanocomposites. In this work, the chemical modification of titanium phosphate (TiP) was carried out through a route with successive intercalations. TiP was synthesized and consecutively pre-expanded with ethylamine and pyromellitic acid. Then it was modified with zinc acetate and silver nitrate. The final product was characterized by Fourier transform infrared spectroscopy, differential scanning calorimetry, wide-angle X-ray diffractometry, field emission scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and thermogravimetry. Infrared revealed dislocation and appearance of bands according to the intercalating agent. Inorganic salts interfered in the crystallization and melting processes of pyromellitic acid. Vanishing of the TiP hkl plane and variation and appearance of new crystallographic planes at low diffraction angles induced intercalation. SEM showed agglomerated structures. New thermal degradation events at higher temperatures endorsed the formation of zinc and silver carboxylate salts. We concluded that a new miscellaneous and multifunctional matter was achieved.