b The pyrolysis-gas chromatographic technique was modified to determine both the characteristic pattern and the identity and quantity of the breakdown products of nitrocellulose, poly(n-butyl methacrylate), and poly(viny1 alcohol). The pyrolysis of these polymers was carried out at 650" C. in a helium atmosphere. The tabulated qualitative and quantitative data of the breakdown products are specific for the various polymers and can also be related to the structure of the original macromolecule.HE STUDY of the thermal degrada-
the results have purposely been equated to a 4.0% wt. level. Between the quadruplicate samples analyzed, a total variance less than the relative error was obtained.
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