Browsing by Author "CATALAN, RE"
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- ItemTHERMAL-DECOMPOSITION TEMPERATURES AND KINETIC-PARAMETERS OF COPOLYMERS FROM N-PHENYLMALEIMIDE AND OXAZOLINE DERIVATIVES(1990) RIVAS, BL; PIZARRO, GD; CATALAN, RE; TAGLE, LH
- ItemTHERMAL-DEGRADATION AND DETERMINATION OF KINETIC-PARAMETERS BY DYNAMIC THERMOGRAVIMETRY OF COPOLYMERS SYNTHESIZED WITHOUT INITIATOR(1991) RIVAS, BL; PIZARRO, GD; CATALAN, RE; TAGLE, LHThe thermal degradation of a series of 18 copolymers of 2-methylaziridine and 1-(2-hydroxyethyl)aziridine with N-phenylmaleimide and derivatives obtained without added catalyst, was investigated using thermogravimetry (TGA) under a dynamic nitrogen atmosphere over a temperature range from 20 to 500-degrees-C. Almost all the copolymers degrade in one step. The kinetic parameters E(a), n and A were obtained following one method of thermogravimetric analysis. The thermal stability depends on the copolymer composition which was determined from the H-1 NMR spectra. The most stable material was poly(p-nitrophenylmaleimide-co-2-methylaziridine).