Fluorinated networks dynamics studied by means of broadband dielectric spectroscopy

A.L. MICCIO; J. OTEGUI; M.E. PENOFF; P. E. MONTEMARTINI; G.A. SCHWARTZ

JOURNAL OF APPLIED POLYMER SCIENCE

JOHN WILEY & SONS INC

Año: 2015 vol. 132 p. 42690 - 42699

0021-8995

The influence of the surface chemical modification on the bulk behavior of epoxy based networks has been studied. Inparticular, the bulk dynamics of epoxy-amine networks modified with fluorinated side chains has been characterized by means ofbroadband 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 segmentaland secondary relaxations. An acceleration of the segmental dynamics as the fluorination degree increases has been clearlyobserved. As a result, a compromise between fluorine surface enrichment and bulk modification has been proposed for these materials