"Effect of operating parameters on time to decomposition of high densit" by M. A. Serageldin and Hai Wang
 

Effect of operating parameters on time to decomposition of high density polyethylene and chlorinated polyethylenes

Document Type

Article

Publication Date

7-15-1987

Department

Department of Chemical Engineering; Department of Chemistry

Abstract

An investigation was made to determine the influence of furnace temperature (500-800 °C), concentration of oxygen in the gas flow (0-100%, v v) and sample mass (2-15 mg) on the decomposition time of several polymers. These were high density polyethylene and chlorinated polyethylenes (25, 36 and 42% by mass chlorine). Thermal oxidative degradation was undertaken in a Du Pont 951 thermogravimetric analyzer in the isothermal mode using a gas flow of 0.833 ml s-1, STP. The results indicated that the average sample heating rate influenced the decomposition time most. Operating at higher furnace temperature (≥ 700°C) and using a small sample mass (≤ 2.5 mg) reduced the variance in td. The activation energy for decomposition of the polymers was 39.3 ± 0.5 kJ mol-1.

Publication Title

Thermochimica Acta

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