Synthesis and Characterization of Polyphosphonates having Azomethine Linkages
Titel:
Synthesis and Characterization of Polyphosphonates having Azomethine Linkages
Auteur:
Roy, Sabitabrata Maiti, Sukumar
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 42 (1998) nr. 1-2 pagina's 165-179
Jaar:
1998-11-01
Inhoud:
Two bishydroxy azomethine monomers were synthesized and reacted with dichloro-phenyl phosphine oxide by the interfacial polycondensation method using a phase transfer catalyst at 0°C. The polymers were characterized by IR, 1H-NMR, 31P-NMR, elemental analyses and X-ray diffraction study. These polymers are soluble in chlorinated aliphatic hydrocarbon solvents, such as CH2Cl2, CHCl3 as well as polar aprotic solvents such as DMF, DMAC, NMP, DMSO. Thermal and flammability studies were carried out by TGA, DTA and limiting oxygen index (LOI) measurements. The polymers are self-extinguishing and begin to lose weight at around 290°C in air.
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