Miscibility study of Torlon® polyamide-imide with Matrimid® 5218 polyimide and polybenzimidazole

Yan Wang, Suat Hong Goh, Tai-Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


We have discovered two new miscible polymer blend systems, namely, Torlon® 4000T with Matrimid® 5218 and Torlon 4000T with polybenzimidazole (PBI). Both Matrimid 5218 and PBI are miscible at a molecular level with Torlon 4000T over the whole composition range as confirmed by microscopy, DSC, FTIR and DMA. DSC and DMA studies show the existence of a single glass transition in each blend. The Tg-composition curve of Torlon/Matrimid blend system forms a sigmoid curve as a function of composition, while the Tg-composition curve of the Torlon/PBI blend system is double parabola-like. FTIR spectra show the existence of hydrogen-bonding interactions in these two polymer blend systems.

Original languageEnglish (US)
Pages (from-to)2901-2909
Number of pages9
Issue number10
StatePublished - May 4 2007


  • Miscible polymer blend
  • T-composition curve
  • Torlon

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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