Journal of Polymer Science Part A Polymer Chemistry · 1986 · 11 citations · 10 references
Natural SciencesMaterials EngineeringMaterials SciencePolymer ChemistryPolymer MaterialsThermal AnalysisPolymer CharacterizationPolymer DegradationPolymer Physical ChemistryPolymer ProcessingPolymer StabilityThermal Properties Of MaterialsPolyamidePolymer Thermal DegradationThermal Degradation ProductsThermal Degradation StudiesThermal PropertiesThermal StabilityThermal Stability Of PolymersThermally Stable Polymers
Abstract Nylons containing carbonyl groups in backbone chains were prepared and their response to heat was studied. The carbonyl groups were introduced using either HOOC(CH 2 ) 4 CO(CH 2 ) 4 COOH or H 2 N(CH 2 ) 5 CO(CH 2 ) 5 NH 2 in the initial monomer compositions. In addition to pyrolysis of these polyamides, the progress of chemical and physical changes as a function of temperature was continuously monitored and analyzed by FT–IR spectroscopy on cast films placed in an environmental chamber. Introduction of the carbonyl groups into the polymer backbone resulted in a significant reduction of the thermal stability of the corresponding polyamide. Possible mechanisms for the thermal degradation entailing these carbonyl groups and N ‐acylamide compounds are discussed.
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