Abstract
Thermal analyses of four new class of crystal violet and bipyridinium cationic polyelectrolytes have been carried out in order to explore their stability and degradation behavior in air. Of these, two polyelectrolytes which have N-acyl ammonium/imminium ions appeared moderately stable than those possessing N-alkyl-ammonium ions in their respective repeating chains. The N-acyl-ammonium oligomers consisting thiophenylene linkages, however, showed unusual stability even at much higher than room temperature; this apparently opens an interesting class of widely useful thermally stable nitrogen-based polycationic systems. A correlation has been made to rationalize TG and DTA data in terms of the chain flexibility (segmental motion) of the macroions and the steric compressions involved in the conformation of their individual molecules.
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Prasad, B., Easo, S. & Kumar, A. Quaternary Ammonium Polyelectrolytes: Thermal Behavior of Certain Systems. Polym J 26, 251–256 (1994). https://doi.org/10.1295/polymj.26.251
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DOI: https://doi.org/10.1295/polymj.26.251