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http://dx.doi.org/10.7317/pk.2014.38.4.457

Changes in the Chemical Structure and the Thermal/Physical Properties of Fluoropolymer Films Induced by Gamma Irradiation under Various Environments  

Choi, Ji Sun (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Sohn, Joon-Yong (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Shin, Junhwa (Research Division for Industry and Environment, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
Publication Information
Polymer(Korea) / v.38, no.4, 2014 , pp. 457-463 More about this Journal
Abstract
In this study, the changes in the chemical structure and the physical property of fluoropolymer films (PTFE, FEP, PFA, PVDF, and ETFE) induced by $Co^{60}$ gamma ray in air, $N_2$, and vacuum environments were investigated. FTIR spectra of the irradiated fluoropolymers indicate that the oxidation proceeded by the reaction of radicals generated by irradiation with oxygen in air. The changes in the heat of fusion and the degree of crystallinity of the irradiated fluoropolymers were investigated using DSC and the results indicate that the scission and crosslinking reactions of the irradiated fluoropolymers were largely influenced by the chemical structure. It was also found that the mechanical property of the irradiated fluoropolymer films under an air atmosphere was significantly decreased.
Keywords
radiation; irradiation; fluoropolymer;
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