Differential thermal analysis of some fibers containing chlorine

The differential thermal analysis curves of four fibers containing chlorine (Saran, Cordelan, Teklan and Kanekalon), and their blends, are influenced by experimental conditions, although not to the same extent as those of poly(vinyl chloride) resin in powder form. The curves were determined using two different (Du Pont) cells, and are discussed in terms of sample holder geometry and material composition. The importance of procedural variables in “fingerprint” applications of thermal analysis for routine fiber identification is re-emphasised.