Novel method for polystyrene reactions at low temperature

Abstract

Thermal decomposition reactions of polystyrene using a new heating medium were carried out by a batch system at 190~280 o C to clarify the manner in which decomposition is initiated. Polystyrene obtained from a commercial source and low molecular weight compounds obtained from the thermal decomposition were analyzed by GC, GPC, IR, 13 C-NMR and GC-MS. The main chain underwent virtually no change by heat application. Polystyrene underwent decomposition below its molding temperature and the major decomposition products were 2,4,6-triphenyl-1-hexene (trimer), 2,4-diphenyl-1-butene (dimer) and styrene (monomer). Ethylbenzene, propylbenzene, naphthalene, benzaldehyde, biphenyl and 1,3-diphenylpropane were detected as minor products. This paper presents a new method for examining the decomposition of polystyrene at low temperature into volatile low molecular weight compounds.

Low-temperature decomposition of epoxy resin

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“…The detailed experimental procedures 11 and apparatuses were described previously. 12 For GC/MS column was CP-Sil 8CB (Chrompack, 30-m oven 40 o C) were used in this study. Calibration Curve.…”

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