Abstract
A vacuum thermobalance incorporating a Cahn RG Electrobalance is described. The apparatus was developed to study the thermal degradation of polyoxymethylene homopolymers and copolymers; the furnace construction limits its range to isothermal degradations at temperatures up to 350°. The effects of the experimental parameters (operating pressure, sample weight, etc.) on the sample temperature and recorded weight are explored, and the optimum operating conditions are established. The treatment of the experimental results is discussed; the results of measurements on a trioxan homopolymer are cited to illustrate the application of the apparatus to kinetic studies.
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