Application of Pyrolysis-Molecular Wright Chromatography to Polymer Degradation.
PRINCETON UNIV N J DEPT OF CHEMICAL ENGINEERING
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Mass chromatography directly provides molecular weights, absolute quantities, and gas chromatographic retention times of the constituents of a mixture, and thus facilitates the process of identification of unknowns. A pyrolyzer with programming capability has been coupled in series with a thermal conductivity cell T.C. and a mass chromato-graph. The T.C. cell permits selective trapping of decomposition products and also provides data that are complementary to thermo-gravimetric and differential thermal analyses. The trapped portions are then analyzed by the mass chromatograph. The degradation of polyisobutylene, polypropylene and polystyrene which have an extensive literature and the degradation of a series of aliphatic polysulfones illustrate the capabilities of the system. Author-PL
- Polymer Chemistry
- Atomic and Molecular Physics and Spectroscopy