Abstract
Thermogravimetry is often used to study polymer degradation. Most often the information obtained may have some practical application but is of limited value for the determination of fundamental processes which may be occurring. A kinetic expression or activation parameters for a complex process which may involve consecutive or parallel reactions provides almost no information about any of the reactions that might be occurring. However, for single, well-defined processes, thermogravimetry, in conjugation with other analytical methods, can be effectively utilized in the determination of reaction mechanism. The thermal degradation of vinylidene chloride barrier polymers corresponds to the elimination of hydrogen chloride initiated at an allylic dichloromethylene unit in the mainchain. This process is uncomplicated by competing reactions.
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