Synthesis and Characterization of New Composites: PANI/Na-AlSBA-3 and PANI/Na-AlSBA-16

MARIA L. MARTÍNEZ; FROILÁN A. LUNA DAMICIS; ANDREA R. BELTRAMONE; MARCOS B. GÓMEZ COSTA; OSCAR A. ANUNZIATA

MATERIALS RESEARCH BULLETIN

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2011 vol. 46 p. 1011 - 1021

0025-5408

The new aluminosilicate materials (Na-AlSBA-3 and Na-AlSBA-16) were synthesized for application in the preparation of composites. Silica mesoporous materials were obtained following the sol-gel method and post-synthesis alumination. These methods were effective for the synthesis of SBA-3 and SBA-16, showing XRD patterns and other characteristics in agreement with the literature. Aniline-saturated hosts were prepared by adsorption of aniline (exposed to the equilibrium vapors from liquid aniline) into the mesoporous materials. Polyaniline/Na-AlSBA-3 (PANI-3) and polyaniline/Na-AlSBA-16 (PANI-16) composites have been synthesized by an in-situ polymerization of aniline-saturated hosts. TG, FTIR, XRD, SEM and TEM were used to characterize the resulting composites. These studies show that PANI is generated inside the channel of the hosts. PANI-16 has an amount of emeraldine salt higher than PANI-3 composite. The electrical conductivity measurements confirmed that PANI and mesoporous materials were true hybrid nanocomposites. The conductive properties of these composites were compared with those of other composites (polyaniline/Na-AlMCM-41 and polyaniline/Na-AlSBA-15) reported.