Application of ESD and PR+Wong Sandler Mixing Rule Equations of State to Study Methane Hydrate Formation in the Presence of Different Inhibitors

Eltayeb, E. A.; Mahdavian, A. R.; Barikani, M.

Application of ESD and PR+Wong Sandler Mixing Rule Equations of State to Study Methane Hydrate Formation in the Presence of Different Inhibitors

Document Type : Full article

Authors

E. A. Eltayeb

A. R. Mahdavian

M. Barikani

Iran Polymer and Petrochemical Institute, Tehran, Iran

Abstract

The effect of cobalt naphthenate and 2-benzoylbenzoic acid on UV-photooxidative degradation of low density polyethylene have been studied. Sheets of these samples were prepared from polyethylene and different concentrations of cobalt naphthenate and 2-benzoylbenzoic acid then these samples were UV-irradiated. Changes in the carbonyl index, tensile strength, elongation at break, crystallinity and density were measured to monitor the degradation. The measurements were done before and after UV-irradiation at every 30-day interval for 90 days. The results show that the UV-irradiation affects the rate of degradation of LDPE with increasing the concentration of the cobalt naphthenate and 2-benzoylbenzoic acid. The increasing rate of degradation is more obvious for the increased concentration of cobalt naphthenate and also the time of irradiation, but the rate of degradation is decreased by incorporation of 2-benzoylbenzoic acid.

Keywords

Mechanical Properties

Photooxidative Degradation

UV-degradation

Cobalt Naphthenate

2-benzoylbenzoic Acid