Flexible all-aromatic polyesterimide films with high glass transition temperatures

Qingbao Guan, Ben Norder, Theo J. Dingemans

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

A series all-aromatic poly(esterimide)s with different molar ratios of N-(3′-hydroxyphenyl)-trimellitimide (IM) and 4-hydroxybenzoic acid (HBA) (IM/HBA = 0.3/0.7 and 0.7/0.3) was prepared with the aim to design flexible high Tg films. Melt-pressed films, either from high molecular weight polymer or cured phenylethynyl precursor oligomers, exhibit Tgs in the range of 200 °C to 242 °C and are brittle. After a thermal stretching procedure, the films became remarkably flexible and very easy to handle. In addition, the thermally stretched 3-IM/7-HBA and 7-IM/3-HBA films show tensile strengths of 108 MPa and 169 MPa, respectively. Thermal treatment increased the Tg of 3-IM/7-HBA from 205 °C to 248 °C, whereas the Tg of 7-IM/3-HBA increased from 230 °C to 260 °C.

Original languageEnglish
Article number44774
Number of pages14
JournalJournal of Applied Polymer Science
Volume134
Issue number18
DOIs
Publication statusPublished - 10 May 2017

Keywords

  • aromatic thermoset polyesters
  • mechanical properties
  • thermal properties

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