Structural Characterization of Novel Cerium Phosphate Glass Ionomer Cements (GICs) Doped with GaCl (Phthalocyanine) - New Journal of Glass and Ceramics

NJGC > Vol.8 No.2, April 2018

Structural Characterization of Novel Cerium Phosphate Glass Ionomer Cements (GICs) Doped with GaCl (Phthalocyanine) ()

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DOI: 10.4236/njgc.2018.82003 1,129 Downloads 2,320 Views Citations

Author(s)

Gomaa El-Damrawi¹, Amal Behairy², Amr M. Abdelghany³

Affiliation(s)

¹Glass Research Group, Physics Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
²The High Institute of Engineering and Technology, New Damietta, Egypt.
³Spectroscopy Department, Physics Division, National Research Center, Giza, Egypt.

ABSTRACT

Cerium Pyrophosphate glass is prepared and investigated by different structural techniques. Resin modified glass ionomer cements (RGICs) of pyro cerium phosphate (40CeO₂-60P₂O_s) composition doped with different concentrations from GaCl Phthalocyanine (C₃₂H₁₆ClGaN₈) have been also prepared and studied for the first time. Different techniques have been applied to shed light on the structural changes induced upon addition of GaCl-Phthalocyanine. The corresponding changes in material structure are widely approved by results of ³¹P magic angle spinning nuclear magnetic resonance (MAS-NMR), X-Ray diffraction and FTIR spectroscopy. The network structure of both base glass and GIC free from C₃₂H₁₆ClGaN₈ is confirmed to be amorphous. Doping even with little concentration from GaCl-Phthalocyanine leads to changing the network structure from amorphous to a highly crystalline one. Formulation of GaCl-Phthalocyanine with water soluble acid leads to monocrystalline structure due to monoclinic lattice structure of Phthalocyanine. Carbonated hydroxyl cerium and gallium phosphate structural phases are evidenced to be formed upon GaCl-Phthalocyanine addition. Presence of such bioactive phases can support that the prepared GICs of considerable C₃₂H₁₆ClGaN₈concentration (1 and 1.5 mol%) can be applied as biocompatible materials used in biodental applications. The morphologies of some selected samples were characterized by SEM. The micrographs have revealed that formulating of cerium phosphate powder of the amorphous glass with polymeric acid successfully led to the formation of CePO₄-H₂O nanofibrous bundles. But formulation with GIC containing GaCl-Phthalocyanine can simply form co-aligned and elongated nanofibers (15 - 40 nm thick and up to ca. 1.2 m long). The formed nanofibers are mainly consisted of hydrated and carbonated CePO₄ and GaPO₄nanocrystals. The hardness of the cemented material increases with increasing GaCl-Phthalocyanine concentrations.

KEYWORDS

Glass Ceramics-GIC-Crtstalline Structure, Spectroscopy

Share and Cite:

El-Damrawi, G. , Behairy, A. and Abdelghany, A. (2018) Structural Characterization of Novel Cerium Phosphate Glass Ionomer Cements (GICs) Doped with GaCl (Phthalocyanine). New Journal of Glass and Ceramics, 8, 23-38. doi: 10.4236/njgc.2018.82003.

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