Abstracts Book - IMRC 2018

• SC4-P027
EFFECT OF THERMAL TREATMENT OF POLYSULFONE
SULFONATED ON ITS ELECTRICAL PROPERTIES
Aracely Sarai Cruz Zavala 1 , Vladimir A. Escobar Barrios 1
1 Instituto Potosino de Investigación Científica y Tecnológica A.C., División de Materiales,
Laboratorio de Polímeros, Mexico.
The extensive research regarding the electrical properties of semiconductor
polymers in the form of thin films, has established that electrical transport and
optical properties strongly depend on the films morphology as well as its
chemical and physical structure, in turn these will depend on the method of
deposition and the conditions of preparation of themselves. In some studies the
electrical transport and optical properties of aromatic polysulfones, chelatemodified
polysulfones, and polysulfone-polydimethylsiloxane copolymers are
described, all these polymers show interesting semiconductor characteristics
that correlate with the molecular structure of the polymers.
In this work thin films of such polysulfone with different sulfonation percentage
are obtained and characterized in terms of their electrical behavior. The results
show that the resistivity of the material is decrease as the sulfonation
percentage increased and applying a heat treatment subsequent to the
deposition of the films until the temperature increases to 150 ° C, after such
temperature, the resistivity increases. This results indicate an important
dependence of the electrical conductivity with the degree of sulfonation, as well
as on the temperature during thermal treatment after the deposition of the thin
film. Furthermore, the energy values of electrochemically determined band gap
support the idea of using these polymers as layers in photovoltaic devices.
Acknowledgment:
We thank the Council of Science and Technology of Mexico (CONACYT) for
fellowship (No. 421675) to carry out this study and the Polymer Laboratory for
its facilities.
Keywords: Polysulfone, Sulfonation, Resistivity
Presenting authors email: aracely.cruz@ipicyt.edu.mx