KINETICS OF THE -CN BOND TRANSFORMATION INTO THE CONJUGATED C=N- BOND IN ACRYLONITRILE COPOLYMER USING INSITU FOURIER-TRANSFORM INFRARED-SPECTROSCOPY

被引：9

作者：

ZHAO, GX ^{[1
]}

CHEN, BJ ^{[1
]}

QIAN, SA ^{[1
]}

机构：

[1] ACAD SINICA,INST COAL CHEM,POB 165,TAIYUAN,PEOPLES R CHINA

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 1992年 / 23卷 / 01期

关键词：

ACRYLONITRILE COPOLYMER; -C-EQUIVALENT-TO-N BOND TRANSFORMATION INTO C=N- BOND; KINETICS; INSITU FTIR; PYROLYSIS;

D O I：

10.1016/0165-2370(92)80015-E

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The changes of the chemical structure of an acrylonitrile copolymer have been studied at various time intervals over the temperature range from 210 to 270-degrees-C in oxygen atmosphere by using in situ Fourier transform infrared spectroscopy (FTIR). The kinetics of the thermal conversion of acrylonitrile copolymer have been studied following the change of the intensity of characteristic absorption bands measured during the oxidative pyrolysis of this copolymer. The maximum rate (V(max)) of C=N- bond formation and thc velocity constant (K(i)) of -C=N bond elimination at a given temperature are obtained from the FTIR data. From the plots of the values V(max) and K(i) against the reciprocal of temperature, the activation energy of C=N- bond formation and that of -C=N bond scission are calculated to be 27.56 and 27.96 kcal mol-1, respectively.

引用

页码：87 / 97

页数：11