Premium
Degradation of polyethylene containing ferric salt and starch
Author(s) -
Gao Jianping,
Wang Shaomin,
Yu Jiugao,
Lin Tong,
Wang Xiaodong
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.19991440129
Subject(s) - ferrous , ferric , photodegradation , chemistry , inorganic chemistry , polyethylene , degradation (telecommunications) , nuclear chemistry , organic chemistry , catalysis , telecommunications , photocatalysis , computer science
Abstract The degradation of polyethylene containing four different ferric salts was compared, using remaining percentage elongation at break as a parameter; and the degradation process was also evaluated with carbonyl index, or with the formation and concentration of hydroperoxide groups. Starch can act as a synergist during the photodegradation of ferric contained PE film. X‐ray photoelectroscopy analysis shows that part of ferric ions turned into ferrous ions during the degradation process because of the redox reaction of ferric ions with oxygen. When stabilizer was added, the changes from ferric ions to ferrous ions decreased. If the PE samples were exposed to high pressure mercury lamp in the atmosphere of nitrogen gas, the absorption peaks of carbonyl group was not found in IR spectra after several days exposure.