A phosphorus-containing PET ionomer: from ionic aggregates to flame retardance and restricted melt-dripping

• DOI: 10.1039/c3py01030a
• Publication Date: 2013-11-15T14:30:56Z
• Authors: Yi Zhang; Li Chen; Jing-Jing Zhao; Hong-Bing Chen; Ming-Xin He; Yan-Peng Ni; Jun-Qiu Zhai; Xiu-Li Wang; Yu-Zhong Wang
• Keywords: Limiting oxygen index; Thermogravimetric analysis; Cone calorimeter; Ionomer

In this study, a novel phosphorus-containing ionic monomer, named sodium salt of 10H-phenoxaphosphine-2,8-dicarboxylic acid,10-hydroxy-,2,8-dihydroxyethyl ester,10-oxide (DHPPO-Na), was synthesized, characterized, and then copolymerized to prepare poly(ethylene terephthalate)-based ionomers. The chemical structure the resulting ionomers confirmed by 1H, 13C, 31P NMR spectroscopy. Thermogravimetric analysis (TGA) differential scanning calorimetry (DSC) were used investigate thermal properties Compared with that neat PET, initial decomposition temperature PETIs decreased in nitrogen atmosphere while it increased air. crystallinity enhanced firstly destroyed group increase. limiting oxygen index (LOI) test cone calorimeter characterize flame-retardant results showed introduction DHPPO-Na could endow an expected performance, meanwhile considerably restricted melt-dripping behavior suppressed smoke release. rheology groups melt viscosity via aggregation during heating, which benefit for property copolyester.