Influence of the irradiation conditions on the effect of radiation on polyethylene | Zendy

Zorica KačarevićPopović | Zendy; D. Kostoski | Zendy; Ljiljaovakovic | Zendy; Nada Miljević | Zendy; Bojana Šećerov | Zendy

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Influence of the irradiation conditions on the effect of radiation on polyethylene

Author(s) -

Zorica KačarevićPopović,

D. Kostoski,

Ljiljaovakovic,

Nada Miljević,

Bojana Šećerov

Publication year - 2004

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc0412029k

Subject(s) - low density polyethylene , polyethylene , high density polyethylene , irradiation , polymer , materials science , oxygen , double bond , polymer chemistry , degradation (telecommunications) , xylene , photochemistry , chemistry , chemical engineering , organic chemistry , composite material , telecommunications , physics , computer science , nuclear physics , engineering , benzene

Two types of polyethylene, low density (LDPE) and high density (HDPE), as well as low density polyethylene containing an antioxidant were subjected to γ-irradiation in the presence of air and in water. The in-adiated polymers were studied using IR spectrophotometric analysis. The radiation induced oxidative degradation was followed through the formation of oxygen containing groups by the development of bands in the 1850-1650 cm - 1 region and double bonds formation by the development of bands in the 1050-850 cm - 1 region. The crosslinking efficiency was determined by measuring the gel content by extraction with xylene. The radiation induced changes in the molecular structure, evolution of oxygen containing species and formation, of vinyl double bonds as well as of the crosslinking efficiency are discussed in terms of the properties of the polymers in an electric field of low strength.

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