- Author
-
Kiang, J. K. Y.
|
Uden, P. C.
|
Chien, J. C. W.
- Title
- Polymer Reactions. Part 7. Thermal Pyrolysis of Poly(Isoprene).
- Coporate
- Massachusetts Univ., Amherst
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
Part 7,
no date,
27 p.
- Contract
- NBS-GRANT-G7-9010
- Keywords
-
pyrolysis
|
polypropylene
|
flash pyrolysis
- Abstract
- Poly(propylene) has been pyrolyzed in a carrier stream of helium from 388 deg to 900 deg C in both programmed heating and flash pyrolysis modes. The products were on-line identified and quantitatively analyzed by an interfaced GC peak identification system. The first order rate constants for pyrolysis are 3.7 x 10(-4) sec.(-1) and 4.0 x 10(-4) sec.(-1), respectively, for atactic and isotactic poly(propylene) at 388 deg C; the corresponding overall activation energies are 56 ±6 and 51 ±5 kcal. mole(-1). The main products in decreasing yields are 2,4-dimethyl-l-heptene, 2-pentene, propylene, 2 methyl-l-pentene, and 2,4,6-trimethyl-l-nonene.