Resumen

GOMEZ, LORENA; PABON GELVES, ELIZABETH; LOPEZ, BETTY LUCY  y  RAMIREZ VELEZ, ALEJANDRO. METHYL METHACRYLATE ADSORPTION ON SBA-15 AND SBA-16 MESOPOROUS SILICAS AND PREPARATION OF THE PMMA/SBA-16 HYBRID. Dyna rev.fac.nac.minas [online]. 2010, vol.77, n.162, pp.49-55. ISSN 0012-7353.

This work reports the synthesis of the polymethylmethacrylate (PMMA)/SBA-16 mesoporous silica hybrid material. The methacrylic monomer is adsorbed by the silica and subsequently polymerized by means of thermal treatment using benzoyl peroxide as initiator. The adsorbed weight percentage is determined using ultraviolet spectroscopy and its conversion to PMMA is followed by Fourier transform infrared spectroscopy. The decreasing in the surface area and the pore diameters, besides the absence of a glass-transition temperature, confirm that macromolecules are occluded into the channels of the silica. The insertion of the polymer inside the mesoporous structure, creates an interpenetrate organic-inorganic network, turning this molecular compound into a potential strengthening for polymeric matrices based on methacrylates.

Palabras clave : hybrid materials; mesoporous silica; PMMA.

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