Synthesis of poly(enaryloxynitrile)s containing styrylpyridine segments

✍ Scribed by Ioakim K. Spiliopoulos; John A. Mikroyannidis

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 530 KB
• Volume: 38
• Category: Article
• ISSN: 0032-3861
• DOI: 10.1016/s0032-3861(96)00688-x

✦ Synopsis

New poly(enaryloxynitrile)s bearing styrylpyridine segments were synthesized by interracial polycondensation of p-bis(1-chloro-2,2-dicyanovinyl)benzene with various bisphenols such as 6-(4-hydroxystyryl)-3-hydroxypyridine (HSHP), 2,6-di(4-hydroxystyryl)pyridine and 2-(4-h2(droxystyryl)-8-hydroxyquinoline. They were characterized by viscosity, elemental analysis, FTi.r., J H and 3C n,m.r., X-ray, d.t.a., t.m.a., t.g.a, and isothermal gravimetric analysis. The polymer prepared from HSHP was crystalline and had a Tg at 270°C. The other polymers were amorphous and showed TgS at 200-210°C and softening at 235-247°C. All the polymers displayed an enhanced solubility in common organic solvents. Upon heat-curing, crosslinked polymers were obtained which were stable up to 370-397°C in N2 and afforded anaerobic char yields of 76-80% at 800°C.