Synthesis of new poly(enaryloxynitrile)s containing flexible ether units and thermal properties

• Published in: Polymer journal Vol. 27; no. 5; pp. 536 - 541
• Main Authors: Ha, Jung-Hyup, Kim, Byung-Gu, Kim, Chulhee, Gong, Myoung-Seon
• Format: Journal Article
• Language: English
• Published: Tokyo Society of Polymer Science 01.01.1995
• Subjects: Applied sciences; Condensation reactions; Crosslinking; Decomposition; Ethers; Exact sciences and technology; Fourier transform infrared spectroscopy; High performance liquid chromatography; Nuclear magnetic resonance spectroscopy; Organic polymers; Physicochemistry of polymers; Polycondensation; Polymerization; Preparation, kinetics, thermodynamics, mechanism and catalysts; Structure (composition); Synthesis (chemical); Thermal effects; Thermodynamic properties; Crosslinked copolymer; Preparation; Interfacial polymerization; Ether copolymer; Ether polymer; Experimental study; Nitrile copolymer; Thermal stability; Thermosetting resin; Dinitrile
• ISSN: 0032-3896; 1349-0540
• DOI: 10.1295/polymj.27.536

The synthesis and the thermal properties of a series of poly(enaryloxynitrile)s with flexible alkylenic ether units distributed on a diphenol moiety are reported. It is shown that polymers having aliphatic units in the main chain do not usually show high thermal stability. However, polymers sustained a 90% residual weight at the temperature between 370-390 degree C and 75-80% of residual weight at 500 degree C. Within each series, greater thermal stability was observed in the case of polymers with shorter alkylenic chains. Enhanced thermal stability is associated with a dicyanovinyl group in the polymer chain. On the bases of these results, the chemical structures of polymers changed during heating to 390 degree C at most. However the decomposition of polymers seems to occur simultaneously during crosslinking of the dicyanovinyl group.