Thermal Degradation vis-a-vis Thermal Volatilisation of High Polymers

Jump To References Section

Authors

  • S. Kole
     R&D Division, MLA Group of Industries Kanpur 208 012 ,IN
  • Arati Kole
     DMSRDE, Kanpur 208 013 ,IN

Keywords:

No keywords.

Abstract

Random thermal degradation behaviour of long chain polymers has been studied in detail from the consideration of kinetics of dissociation of bonds vulnerable to thermal activation. In the process, thermogravimetric equations correlating kinetic parameters of the degradation reaction have been developed. Different experimental techniques for evaluation of kinetic parameters have also been devised. An analysis of the results reveals that thermogravimetric weight-loss can be expressed as a Freeman-Carroll type first order reaction having a rate constant that varies over a wide range with the progress of the reaction. High initial molecular weight and high molar cohesion impart retarding influences on thermal volatilisation. Interestingly, the isothermal volatilisation rate is found to pass through a maximum which provides a clue to determination of the kinetic parameters of the degradation reaction.

Downloads

Download data is not yet available.

Downloads

Published

1996-03-01

How to Cite

Kole, S., & Kole, A. (1996). Thermal Degradation vis-a-vis Thermal Volatilisation of High Polymers. Indian Science Cruiser, 10(2), 22–28. Retrieved from http://www.informaticsjournals.com/index.php/ISC/article/view/42679

Issue

Volume 10, Issue 2, 1996

Section

Research Report

 

References

R T Bailey, A M North and R A Pethrick, Molecular Motion of High Polymers, Oxford University Press, New York, 1981.

Elisabeth Schroder, G Mueller and Karl-Friedrich Arndt, Polymer Characterisation, Hanser Publisher, Munich, 1989.

E A Turi, Ed, Thermal Characterisation of Polymeric Materials, Academic Press, New York, 1981.

S Kole, P P De and D K Tripathy, Polymer, 34, 3732-37, 1993.

E S Freeman and B Carroll, J Phys Chem, 62, 394, 1958.

E Husemann and G V Schulz, Z Physik Chem, B 52, 1, 1942.

Paul J Flory, Principles of Polymer Chemistry, Cornell University Press, ITHACA New York, 1953.

J M Coulson, J F Richardson, J R Backhurst and J H Harker, Chemical Engineering, Vol 2, Pergamou

Press Oxford, 1978.

Robert H Perry and Cecil H Chilton, Chemical Engineers' Handbook, McGraw-Hill, Kogakusha, Tokyo, 1973.

S Kole, S Roy and A K Bhowmick, Polymer 35, 3423-26, 1994.

S Kole, S Roy and A K Bhowmick, Polymer 36, 3273-77, 1995.