CONDUCTING GELS AND FILMS BASED ON POLYANILINE: ELECTRICAL AND VISCOELASTIC PROPERTIES.Author:
GONZÁLEZ URANGA IGNACIO.
Year:
2004.
University:
PAÍS VASCO [
www.ehu.es].
Place of defense: FACULTAD DE CIENCIAS QUÍMICAS.
Place of preparation: FACULTAD CIENCIAS QUÍMICAS DE SAN SEBASTIÁN.
Summary: The Polyanilina (PANI) is one of the polymers (ICP) drivers inherently more promising than currently exist (easy polymerization, high chemical stability and good conductivity). However, due to its high aromatic, this material is very difficult to prosecute. In this work has deepened in studying the processability of PANI. Specifically, this thesis has focused on obtaining and characterization of gels and films PANI. The films obtained from binary solutions PANI (CSA) 0.5/m-cresol presented conductividades of 150S/cm but are fragile. The gels CLOTH (CSA) 0.5/m-creasol that have been obtained in this work, presented conductividades up to 150 S / cm (a value 50 times higher than those published by other authors for gels based polianilina similar concentration). Therefore, it has developed a route that allows obtaining highly conductive gels. The advantage of this finding is that these gels also preserve the elasticity and properties of the network viscoelásticas gel. To improve the dimensional stability of the samples during storage has been prepared ternary mixtures of PANI (CSA) 0.5/m-cresol containing a derivative celulosico: ethylcellulose (EC) and cellulose acetate (CA). The gels of ternary PANI (CSA) 0.5/EC/m-cresol have greater dimensional stability that the binary and remain highly conductive.
