Diseño de un proceso para la obtención de un material con propiedades semiconductoras eléctricas a partir de polimerización de anilina dopada con ácido

Abstract

The purpose of the present titling work was to design the industrial process to obtain a material that has electrical semiconductor properties from acid doped aniline. Monomer to be used, reaction temperature, pH, and monomer oxidant ratio were determined. Based on this, aniline was determined as the base monomer to obtain the semiconductor material. The conditions under which the reaction was carried out were: temperature range between 4 - 10 degrees Celsius, pH between 0 - 1 throughout the polymerization process, and a monomer-oxidant ratio of 25% considering a stoichiometric ratio of 2: 1 and using hydrochloric acid as a doping agent. The result obtained was a dark green solid that was determined by analysis as emeraldine chloride and when applying an electric current, acted as a semiconductor with a percentage of electrical transmittance of 52.44% at a monomer-oxidant stoichiometric ratio of 2: 1 and 50% oxidant dosage. A batch or batch reactor with coil cooling was designed for the process design, in which the aniline is loaded to subsequently add Potassium dichromate as an oxidant. For an optimum degree of purity in the process, it was recommended to add the oxidant gradually and control the pH of the reactive medium