Accession Number:

AD0705965

Title:

STUDY OF THE KINETICS OF THE TRANSFORMATION OF THE CN BOND IN POLYACRYLONITRILE FROM INFRARED ABSORPTION SPECTRA (Izuchenie Kinetiki Prevrashcheniya CN Svyazi v Polyakrilonitrile po Ik-Spektram Pogloshcheniya),

Descriptive Note:

Corporate Author:

ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Report Date:

1970-02-01

Pagination or Media Count:

10.0

Abstract:

Polyacrylonitrile films were heated in vacuum at temperatures in the range 205-270C and the rate of disappearance of the nitrile group with time followed by IR spectroscopy. The reaction was the conversion of the nitrile group into a conjugated -CN- structure. In the range 205-235C, transformation with no degradation occurred with an activation energy of 41 K calmole. At 245-270C some degradation occurred and the activation energy for nitrile conversion fell to 21 K calmole.

Subject Categories:

  • Atomic and Molecular Physics and Spectroscopy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE