Thermal decomposition studies of bio-resourced polyamides by thermogravimetry and evolved gas analysis
PBN-AR
Instytucja
Instytut Wysokich Ciśnień Polskiej Akademii Nauk
Źródłowe zdarzenia ewaluacyjne
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
Thermochimica Acta
ISSN
0040-6031
EISSN
Wydawca
Elsevier Ltd.
Rok publikacji
2015
Numer zeszytu
Strony od-do
40-48
Numer tomu
612
Identyfikator DOI
Liczba arkuszy
1
Słowa kluczowe
angielski
Bio-polyamides
Thermal decomposition
Thermoanalytical methods
Streszczenia
Język
angielski
Treść
In this work the degradation process of polyamides (PAs) based on renewable resources – PA 4.10, PA 6.10, PA 10.10 and PA 10.12, was studied by thermogravimetry (TG) coupled with evolved gas analysis (EGA) by infrared spectrophotometry (IR), quadrupole mass spectrometry (QMS). The TG/FTIR/QMS studies in inert atmosphere showed that the thermal decomposition of bio-polyamides takes place with the evolution of alkenes, nitriles, cyclic species and low molecular weight compounds – carbon monoxide, carbon dioxide, water and ammonia. The thermo-oxidative decomposition of bio-polyamides start with N-vicinal methylene group and follow with the scission of alkyl-amide or vicinal Csingle bondC bond. The high energy reactions result in production of mainly low molecular gases (CO2, CO, H2O, NH3). Char residue analysis revealed the presence of carboxylic end groups, which may participate in secondary reactions during degradation, resulting in crosslinks, and decomposing to carbon dioxide. Taking into account the thermoanalytical results obtained, the thermal decomposition pathway for bio-polyamides in inert atmosphere has been postulated.
Inne
System-identifier
PX-58aef39ad5dee56058293828
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