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International Journal of Polymer Science
Volume 2013 (2013), Article ID 381653, 7 pages
http://dx.doi.org/10.1155/2013/381653
Research Article

Cellulose-Based Polymer Composite with Carbon Black for Tetrahydrofuran Sensing

1Laboratorio de Investigación y Desarrollo de Materiales Avanzados (LIDMA), Facultad de Química, Universidad Autónoma del Estado de México, Campus Rosedal, Paseo Colón Esquina con Paseo Tollocan s/n, 50000 Toluca, MEX, Mexico
2Universidad Autónoma de Ciudad Juárez, Avenida del Charro 450 Norte, 32310 Civdad Juárez, CHIH, Mexico
3Centro de Investigación en Materiales Avanzados, S.C. Miguel de Cervantes No. 120, Complejo Industrial Chihuahua, 31109 Chihuahua, CHIH, Mexico

Received 21 May 2013; Revised 14 August 2013; Accepted 15 August 2013

Academic Editor: Gonzalo Martínez-Barrera

Copyright © 2013 Susana Hernández-López 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.

Abstract

This work focused on studying the sensing efficiency of tetrahydrofuran (THF) by composite films made of thin layers of a cellulose-based polymer and carbon black. We analyze the reproducibility, durability, desorption time, and the sensitivity percent as a function of the amount of solvent. Two types of experiments were conducted, (1) progressive sensing test (PST) which consisted of progressively increasing the amount of solvent from 0.1 mL increments up to 1.0 mL and (2) multiple sensing test (MST) where the layers were subjected to consecutive pulses of the same amount of solvent, with a minimum of 0.1 mL and a maximum of 0.4 mL. The response and desorption times were a few seconds, and the sensitivity percent ranged from 1% to 170% and was dependent on the solvent quantity.