One-dimensional order/disorder in a polydiacetylene

✍ Scribed by Patel, G. N. ;Khanna, Y. P.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1982
• Tongue: English
• Weight: 352 KB
• Volume: 20
• Category: Article
• ISSN: 0098-1273
• DOI: 10.1002/pol.1982.180200611

✦ Synopsis

Abstract

A polydiacetylene film, found to be amorphous by x‐ray diffraction, possesses some kind of order as suggested by differential scanning calorimetry (DSC). The order/disorder phenomenon which occurs upon heatingcooling is also accompanied by a green/yellow color transition. On the basis of analogies between crystallization and the order in this material, we have extended the application of the Avrami equation to determine the dimensionality of the order in the polymer. Kinetic analysis of the exothermic transition (disorder → order) by DSC suggests that the material has one‐dimensional order. The disruption and formation of this order, which accompany the color changes in this polydiacetylene, give rise to endothermic and exothermic transitions, respectively. Supporting evidence for the proposed one‐dimensional order/disorder concept is cited.