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Radiation degradation of epoxidized natural rubber studied by solid‐state nuclear magnetic resonance and infrared spectroscopy
Author(s) -
Senake Perera M C
Publication year - 2000
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/1097-0126(200007)49:7<691::aid-pi440>3.0.co;2-#
Subject(s) - magic angle spinning , materials science , fourier transform infrared spectroscopy , natural rubber , solid state nuclear magnetic resonance , epoxy , irradiation , infrared , infrared spectroscopy , spectroscopy , nuclear magnetic resonance spectroscopy , nuclear magnetic resonance , polymer chemistry , composite material , photochemistry , chemistry , chemical engineering , organic chemistry , optics , physics , quantum mechanics , nuclear physics , engineering
The mechanism of radiation‐induced structural changes in epoxidized natural rubber was investigated using nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR) spectroscopy. Samples were irradiated both under vacuum and in air. Because the rubbers crosslinked during irradiation, solid‐state NMR had to be used. The cross polarized/magic angle spinning NMR spectra were used to calculate the radiation yields. Ring opening of the epoxy groups was found to occur during irradiation. Most of the crosslinking was due to epoxy group ring opening, and very little or no CC crosslinking was observed. © 2000 Society of Chemical Industry