Polyimides possessing bulky phosphorus groups: Synthesis and characterization

摘要: A series of polyimides with bulky pendent groups containing phosphorus were obtained from polymerization various dianhydrides a new diamine (2DOPO-A) bearing two (9,10-dihydro-9-oxa-10-oxide-10-phosphaphenanthrene-10-yl) (DOPO) substituents. The resulting polymers had inherent viscosities 0.15–0.32 dL/g and glass transition temperatures 260–283°C. soluble in some organic solvents due to the incorporation polar DOPO groups. non-coplanar cardo structure 2DOPO-A also contributed improvement solubility polyimides. Incorporating into resulted low initial decomposition (IDT; 310–362°C) independent Thermogravimetric analysis showed that DOPO-containing exhibited high integral procedural decomposed (IPDT) 891–950°C. Incorporation group improved their weight loss rate, thermal stability, thermal-oxidative heat insulating property temperature region. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 791–796,