Thermal degradation of polylactide/aluminium diethylphosphinate

Date

2014-11-01

Author

Kaya, Hatice
Hacaloğlu, Jale

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Direct pyrolysis mass spectrometry analyses of polylactide, PLA, reveal two dominating decomposition pathways; chain homolysis and trans-esterification reactions under the experimental conditions yielding mainly low mass fragments and cyclic oligomers. The main pyrolysis products of aluminium diethylphosphinate, AlPi, are determined to be the dimeric four coordinate compounds possessing Al-O-P linkages. Thermal stability of polylactide in the presence of AlPi is decreased due to the attack of phosphinates groups on carbonyl groups. Eventually, extensive fragmentation of PLA takes place and generation of four coordinate dimeric compounds involving Al O P linkages is suppressed. On the other hand, strong evidence for generation of polyphosphinates is detected. Collision induced dissociation experiments are used to confirm the proposed structures.

Subject Keywords

Polylactide, Aluminium diethylphosphinate, Thermal degradation, Direct pyrolysis mass spectrometry, Collision induced dissociation

URI

https://hdl.handle.net/11511/32273

Journal

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS

DOI

https://doi.org/10.1016/j.jaap.2014.08.015

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

H. Kaya and J. Hacaloğlu, “Thermal degradation of polylactide/aluminium diethylphosphinate,” JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, pp. 155–162, 2014, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32273.