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Phosphorus‐Containing Polymer Flame Retardants for Aliphatic Polyesters
Author(s) -
Schwarzer Madeleine,
Korwitz Andreas,
Komber Hartmut,
Häußler Liane,
Dittrich Bettina,
Schartel Bernhard,
Pospiech Doris
Publication year - 2018
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201700512
Subject(s) - thermogravimetric analysis , materials science , charring , polyester , thermal decomposition , cone calorimeter , pyrolysis , combustion , polymer , fire retardant , fourier transform infrared spectroscopy , chemical engineering , polymer chemistry , organic chemistry , composite material , char , chemistry , engineering
Polyesters with 9,10‐dihydro‐9‐oxy‐10‐phosphaphenanthrene‐10‐oxide‐containing comonomers are synthesized aiming to improve the flame retardancy of aliphatic polyesters such as poly(butylene succinate) and poly(butylene sebacate). The influence of the chemical structure on the thermal decomposition and pyrolysis is examined using a combination of thermogravimetric analysis (TGA), TGA‐Fourier transform infrared (FTIR) spectroscopy, pyrolysis‐gas chromatography/mass spectrometry, and microscale combustion flow calorimetry. Thermal decomposition pathways are derived and used to select suitable candidates as flame retardants for PBS. The fire behavior of the selected polymers is evaluated by forced‐flaming combustion in a cone calorimeter. The materials show two modes of action for flame retardancy: strong flame inhibition due to the release of a variety of molecules combined with charring in the solid state.