Measurement of Hydrochloric Acid Emission From Burning PVC Compounds

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Abstract
The development of a novel Micro/TG method for measuring HCl emission from PVC compounds and optimization of operation conditions are described. The main problem with conventional large scale methods is the loss of HCl due to leaks and condensation in the system leading to erroneous results. The Micro/TG method overcomes many of the problems inherent in the large scale method. Comparison with results obtained by the large scale method showed that the total balance of chlorine content determined by the Micro/TG method is closer to the theoretical in all of the formulations tested. Any chlorine in the form of organic-chloride (RCl) will not be detected by the Micro/TG method, a limitation shared by the large scale method. The Micro/TG method offers other advantages such as automation, short experimental time and direct measure ment of chloride ion concentration by ion selective electrode.