Block Polymers pp 321-331 | Cite as

Thermal Stability of Piperazine Block Copolymers

  • Stephen D. Bruck
  • Ashok Thadani
Conference paper


Previous publications discussed the thermal stability of a series of piperazine polyamides (1–4). In the case of the piperazine homopolymers, it was shown that methyl substitution of the piperazine rings effectively decreases their thermal stability in a vacuum. On the other hand, the presence of terephthaloyl moieties in the chain increases the thermal stability of the system in comparison with the polymers that have isophthaloyl moieties in their chains. An essentially random thermal breakdown was indicated from the nature of the volatile degradation products, the character of the rate curves, and the high activation energies.


Block Copolymer Thermal Degradation Number Average Molecular Weight Hydrogen Cyanide Medium Molecular Weight 
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Copyright information

© Plenum Press, New York 1970

Authors and Affiliations

  • Stephen D. Bruck
    • 1
  • Ashok Thadani
    • 2
  1. 1.National Heart and Lung InstituteNational Institutes of HealthBethesdaUSA
  2. 2.Chemical Engineering DepartmentThe Catholic University of AmericaUSA

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