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Chemical Recycling of Some Plastic Polymers Wastes to New Oxidize Materials Using Chemical Oxidizing Process

Author Affiliations

  • 1Polymer Research Lab, Chemistry Department, Science College, Mosul University, Mosul, Iraq
  • 2Polymer Research Lab, Chemistry Department, Science College, Mosul University, Mosul, Iraq

Res.J.chem.sci., Volume 6, Issue (6), Pages 19-27, June,18 (2016)

Abstract

Chemical oxidization of polymers wastes that manufactured mainly from commodity plastics LDPE, HDPE, PP and PS were applied using different inorganic oxidize agents (KMnO4), (K2Cr2O7),(H5IO6), (KIO3) and (NH4)2Ce(SO4) in presence of oxalic acid , sulphuric acid , potassium hydroxide and water. The investigated polymers wastes were chemically oxidized either directly from solid or after thermal cracking from oil. Spectrophotometric studies of the polymers wastes and their oxidize materials were investigated. Chemical identification analyses of the produced materials after oxidation have shown appearance of a new functional groups distribute between carbonyl groups and carboxyl or hydroxyl groups. Obvious diminution in the average molecular weights of the polymers wastes and their softening points were recorded for their oxidize materials after oxidation. A comparison study in thermal behaviors of the polymers wastes and their oxidize materials were added another confirmations that the new oxidize materials formed have lowering their thermal stability after oxidation as it was shown along the thermogram scale. The oxidize waste materials were changed completely from elastic compositions to either solid has powder form or liquid with brown oily appearance.

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