End-group modified hyperbranched polyetherimides were prepared by a one-pot, two-step reaction sequence. General synthetic techniques were developed to prepare both monofunctional terminating segments and the corresponding modified polyetherimide hyperbranched polymers. Monofunctional groups were used to terminate an AB2-type polycondensation reaction, generating capped hyperbranched polymers (HBPs). The composition and constitution of the end groups controlled the solubility and thermal properties of the HBPs. For the same polymer backbone, different end groups were able to shift the glass-transition temperature nearly 100 °C. End-group modification greatly influenced the film-forming ability of the HBPs.
|Original language||English (US)|
|Number of pages||11|
|Journal||Journal of Polymer Science, Part A: Polymer Chemistry|
|State||Published - Apr 15 2002|
ASJC Scopus subject areas
- Polymers and Plastics
- Materials Chemistry