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Journal of Nanomaterials
Volume 2014, Article ID 853967, 8 pages
http://dx.doi.org/10.1155/2014/853967
Research Article

An Alcohol-Free SiO2 Sol-Gel Matrix Functionalized with Acetic Acid as Drug Reservoir for the Controlled Release of Pentoxifylline

1División Académica de Ingeniería y Arquitectura, Universidad Juárez Autónoma de Tabasco, Carr. Cunduacán-Jalpa de Méndez Km. 1, Colonia La Esmeralda, 86690 Cunduacán, TAB, Mexico
2Laboratorio de Microscopía Electrónica, Instituto Nacional de Rehabilitación, Calz. México-Xochimilco 289, Colonia Arenal de Guadalupe, 14389 Tlalpan, D.F., Mexico

Received 14 March 2014; Revised 22 May 2014; Accepted 22 May 2014; Published 6 July 2014

Academic Editor: Zhongkui Hong

Copyright © 2014 Mayra Angélica Alvarez Lemus et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

Complementary information on Thermogravimetric Analysis (TGA) of the materials is provided in figure S1, where first derivative was calculated. Zero, first order, and Langmuir extended mathematical models were used in order to estimated corresponding rate constants. A description of this approach is included in this section.

  1. Supplementary Material