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Vibrational spectroscopic characterization of ethylene‐Co‐vinyl cinnamate copolymers before and after UV exposure
Author(s) -
Coleman Michael M.,
Hu Yin,
Sobkowiak Maria,
Painter Paul C.
Publication year - 1999
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19991410118
Subject(s) - copolymer , ethylene , polymer chemistry , materials science , mole fraction , solid state , photochemistry , chemistry , organic chemistry , polymer , catalysis , composite material
Vibrational spectroscopic studies of a series of ethylene‐co‐vinyl cinnamate (EVCIN) copolymers, before and after exposure to UV radiation, are reported. The purpose of these studies is to determine whether or not significant reaction (photo‐crosslinking) of the cinnamate groups in EVCIN copolymers occurs upon UV exposure in the solid state as the concentration (fraction) of cinnamate groups is systematically reduced. By increasing the ethylene concentration in the EVCIN copolymers the cinnamate groups are “diluted” and progressively spaced apart in the copolymer. Somewhat surprisingly, we find that an EVCIN copolymer containing only 5 mole % vinyl cinnamate still undergoes a facile crosslinking in the solid state upon UV exposure.