Branching in Polyvinylchloride

Ahlstrom and co-workers [76] applied the techniques of Py-GC and PHGC to the determination of, short-chain branches in PVC and reduced PVC. Their attempts to determine the short-chain branches in PVC by Py-GC were complicated by an inability to separate all the parameters affecting the degradation of the polymer. Not only does degree of branching change the pyrolysis pattern, but so do tacticity and crosslinking [77]. 

For the pyrolysis of PVC, a ribbon probe was used. On-line hydrogenation of the pyrolysis products was accomplished using hydrogen as the carrier gas with 1% palladium on Chromasorb-P catalyst inserted in the injection port liner. Maximum 

Reprinted with permission from D.H. Ahlstrom, S.A. Liebman and K.B. Abbas,  

Journal of Polymer Science, Polymer Chemistry Edition, 1976, 14, 10, 2479,  

Reprinted with permission from D.H. Ahlstrom, S.A. Liebman and K.B. Abbas, Journal of Polymer Science, Polymer Chemistry Edition, 1976, 14, 10, 2479, 1976, Wiley Inter science [76]  

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