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Fluorinated networks dynamics studied by means of broadband dielectric spectroscopy
Author(s) -
Miccio Luis A.,
Otegui Jon,
Penoff Marcela E.,
Montemartini Pablo E.,
Schwartz Gustavo A.
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.42690
Subject(s) - fourier transform infrared spectroscopy , epoxy , differential scanning calorimetry , materials science , dielectric , spectroscopy , dynamics (music) , surface modification , polymer chemistry , chemical engineering , chemistry , composite material , thermodynamics , physics , optoelectronics , quantum mechanics , acoustics , engineering
ABSTRACT The influence of the surface chemical modification on the bulk behavior of epoxy based networks has been studied. In particular, the bulk dynamics of epoxy‐amine networks modified with fluorinated side chains has been characterized by means of broadband dielectric spectroscopy (BDS), differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) spectroscopy. The fluorination effect on the structure and dynamics of the materials has been related with the observed changes in both segmental and secondary relaxations. An acceleration of the segmental dynamics as the fluorination degree increases has been clearly observed. As a result, a compromise between fluorine surface enrichment and bulk modification has been proposed for these materials. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42690.