Properties of polypyromellitimides containing phosphorus
Article first published online: 10 MAR 2003
Copyright © 1991 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 42, Issue 2, pages 373–382, 20 January 1991
How to Cite
Varma, I. K., Kumar, R., Saxena, S. and Varma, D. S. (1991), Properties of polypyromellitimides containing phosphorus. J. Appl. Polym. Sci., 42: 373–382. doi: 10.1002/app.1991.070420209
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 21 MAR 1990
- Manuscript Received: 12 OCT 1989
The paper deals with the synthesis and characterization of seven polypyromellitimide samples having varying contents of phosphine oxide and ether linkages in the backbone with pendant maleimido groups. Curing characteristics and thermal stability of polymers were evaluated by differential scanning calorimetry and dynamic thermogravimetry. It was observed that an increase in pendant maleimido groups resulted in an increase in the heat of polymerization. Char yield also increased with increase in phosphorus content. Conductivity and dielectric parameters were also evaluated. The mechanism of conduction was found to be a combination of electronic and ionic type.