Synthesis, structure-property relationships of polyphosphoramides with high char residues

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)6621-6627
Journal / PublicationJournal of Materials Chemistry
Volume21
Issue number18
Publication statusPublished - 14 May 2011

Abstract

A series of polyphosphoramides with high char residues were successfully synthesized using solution polycondensation and well characterized. The thermal properties and flammability were investigated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and microscale combustion calorimeter (MCC). The evolved gases during decomposition were also analyzed using Fourier transform infrared coupled with the thermogravimetric analyzer (TG-IR) technique. The char residues of the polyphosphoramides were investigated by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) and Raman spectroscopy. The results showed that polyphosphoramides with sufficient molecular weights could be obtained, having high glass transition temperatures (Tgs), high thermal stabilities, as well as lower flammability depending on the diamines incorporated. The char residues showed much difference among each other. Interestingly, one sample containing an ether group in the backbone exhibited a honeycomb-like char morphology, associated with a high degree of graphitization. © 2011 The Royal Society of Chemistry.

Citation Format(s)

Synthesis, structure-property relationships of polyphosphoramides with high char residues. / Tai, Qilong; Hu, Yuan; Yuen, Richard K. K.; Song, Lei; Lu, Hongdian.

In: Journal of Materials Chemistry, Vol. 21, No. 18, 14.05.2011, p. 6621-6627.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review