𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Thermal decomposition of copolymers of styrene and halogenated monomers

✍ Scribed by F. Hrabák; J. Mitera; V. Kubelka; M. Bezděk

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
405 KB
Volume
14
Category
Article
ISSN
0014-3057

No coin nor oath required. For personal study only.

✦ Synopsis

Copolymers of 1,2,2,2-tetrachloroethyl esters of unsaturated acids and halogenated N-phenyl maleimides with styrene were pyrolyzed; volatile products were analyzed with a mass spectrometer combined with a gas chromatograph. Hydrogen halide and carbon dioxide in the volatile products were determined during the thermal decomposition of copolymers in glass ampoules; the acyl chloride groups were determined in the residues. The thermal decomposition of copolymers of tetrachloroethyl esters with styrene sets in at ca. 230 ° by the release of chloral from the copolymer and splitting of some of the C--421 bonds in the copolymer. The decomposition of copolymers of styrene with halogenated N-phenyl maleimides starts above 300 ° by depolymerization of the polystyrene chain sections and by splitting of some of the carbon-halogen bonds. At 310 and 500 ° for copolymers of tetrachloroethyl esters and at 500 ° for halogenated N-phenyl maleimides, there is radical dehydrohalogenation of the copolymers, with depolymerization of polystyrene blocks and splitting of carbon carbon bonds in the main chain.

📜 SIMILAR VOLUMES

The thermal decomposition of hydrocarbon
The thermal decomposition of hydrocarbon copolymers-V Products and mechanism of decomposition of copolymers incorporating styrene
✍ J.R. MacCallum; K. Paterson 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 209 KB

The products of the thermal decomposition of a series of copolymers of structure ## Ph Ph A with n = 0, I, 3, 4 and 5, have been investigated. A high proportion of the products consists of low molecular weight analogues of the parent polymers, with styrene the major constituent of the volatile li

The thermal decomposition of hydrocarbon
The thermal decomposition of hydrocarbon copolymers—III.: Kinetics of decomposition of copolymers incorporating α-methyl styrene
✍ J. Atkinson; J.R. MacCallum 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 222 KB

The kinetics of the thermal decomposition of a series of copolymers of structure ] / ## Ph Ph J m with n = I, 3, 4, 5, 6 and 10 have been studied. Activation energies have been calculated for all the copolymers at various stages of decomposition. Apart from the n = 1 sample, the copolymers have

Thermogravimetric analysis and the flash
Thermogravimetric analysis and the flash-ignition and self-ignition temperatures of copolymers of styrene with halogenated monomers
✍ F. Hrabák; I. Masařik; K. Bouchal; M. Slaviček 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 352 KB

A~tract--The TGA method was used in studies of the thermal decomposition of copolymers of styrene with 1,2,2,2-tetrachloroethyl esters of acrylic and fumaric acids and with halogenated N-phenyl maleimides, and of homopolymers of halogenated monomers and mixtures of polystyrene with poly[N-2,4,6trich