CAPACITY OF OLIGOIMIDE MOLECULES OF IMIDE POLYMERIZATION OLIGOMERS FOR ORDERED STACKING

Using x-ray structure analysis and optic microscopy the possibility wa s shown for the formation of liquid-crystal order in melts of IPO (imi de polymerization oligomers), having a similar architecture. Rheologic studies showed that an anomaly of the melt viscosity, characterized w ith the help of the index n in the relationship eta approximately gamm a(-n), was observed at n = 1.0-1.2 for IPO with a similar architecture and at n = 0.4 for those with different architecture. The rate consta nts for the process of the buildup of viscosity of the melts at 270-de grees-C with time are 0.7-0.35 and 0.02 min-1 respectively.