Synthesis and properties of hexakis-(β-carboxyethenylphenoxy)cyclotriphosphazene

Article abstract of DOI:10.1016/j.molstruc.2017.07.005

A new cyclotriphosphazene derivative (3) was prepared from the reaction of hexakis-(p-formilphenoxy)cyclotriphosphazene (2) with malonic acid. The structure of 3 was approved by spectroscopic techniques (FT-IR, ³¹P, ¹H, ¹³C NMR) and small-angle X-ray scattering method. The thermal behavior of compound 3 was investigated by thermogravimetric (TGA) analysis and differential scanning calorimetry (DSC). This compound was found to be stable up to about 300 °C. At 310 °C 3 was decarboxylated with simultaneous conversion of the multiple bonds and the formation of a highly cross-linked polymeric residue. By theoretical calculation a sphere diameter around a molecule 3 was installed. Whereby seems promising to use 3 as a nanoscale hybrid modifier various polymers, and for the synthesis of ion-exchange resins.