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Thermal stability of a novel poly(ether ether Ketone Ketone) (PK99)
Author(s) -
Abate L.,
Calanna S.,
Pollicino A.,
Recca A.
Publication year - 1996
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10573
Subject(s) - peek , isothermal process , materials science , ether , ketone , polymer , thermal stability , nitrogen , activation energy , degradation (telecommunications) , thermal , chemical engineering , polymer chemistry , residue (chemistry) , thermodynamics , organic chemistry , composite material , chemistry , telecommunications , physics , computer science , engineering
The degradation of PK99 was studied by heating the polymer in both isothermal and dynamic conditions under nitrogen flow and in a static air atmosphere. In both environments this polymer's thermal stability exceeded that of PEEK. The dynamic experiments showed that in both nitrogen and air atmospheres the polymer degraded in two stages with formation of the same residue, which was quite stable under nitrogen, while almost completely burned in air. Good agreement was observed with the isothermal experiments. Apparent activation energy values were evaluated. The double linear relationships obtained by the Kissinger equation suggested a complex degradation process.