INVESTIGADORES
MONTEMARTINI Pablo Ezequiel
artículos
Título:
FLUORINATED NETWORKS DYNAMICS STUDIED BY MEANS OF BROADBAND DIELECTRIC SPECTROSCOPY
Autor/es:
ALEJANDRO MICCIO; JON OTEGUI; GUSTAVO SCHWARTZ; ELISABETH PENOFF; P.E. MONTEMARTINI; P.A. OYANGUREN
Revista:
EUROPEAN POLYMER JOURNAL
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2014
ISSN:
0014-3057
Resumen:
Partially
fluorinated polymers are high tech materials which impart attractive properties
to the surfaces and interfaces, such as low friction, hydro and oleophobicity,
self-cleaning and antifouling, among others. On the other hand, epoxy resins
are one of the most extensively used polymers in a wide range of applications
due to their versatility. Turbine blades and oil pipes, to name some examples,
are pieces which need an antifouling and self-cleaning surface, at the time
they require good mechanical properties as well as environmental and thermal
stability. Epoxy resin networks modified with fluorinated chains are an
excellent alternative to meet the required set of properties. Since fluorine is
responsible for the interesting surface properties of fluoropolymers, an extensive
study has been carried out in the past decades concerning their surfaces analysis
and characterization. Nevertheless, the influence of the fluorinated chains in
the bulk polymer structure and behavior has been poorly studied. In this work
epoxy based networks where modified with fluorinated side chains and they were
studied by broadband dielectric spectroscopy (BDS), differential scanning
calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR),
achieving a good understanding about the modifier influence in the polymer
structure and hence, how this affects other properties. Secondary and segmental
relaxations were studied, first in the reactants, and then the results were
translated to the epoxy networks, promoting a very well understanding of the polymer
dynamics.