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),

Corporate Author : ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)

Personal Author(s) : Kubasova,N. A. ; Kusakov,M. M. ; Shishkina,M. V.

Report Date : FEB 1970

Pagination or Media Count : 10

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 -C=N- structure. In the range 205-235C, transformation with no degradation occurred with an activation energy of 41 K cal/mole. At 245-270C some degradation occurred and the activation energy for nitrile conversion fell to 21 K cal/mole.

Descriptors :   (*ACRYLONITRILE POLYMERS, *PYROLYSIS), (*NITRILES, *DECOMPOSITION), INFRARED SPECTRA, REACTION KINETICS, IMINES, FILMS, USSR

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE