Surface properties of aromatic polymer film during thermal treatment

Ion Sava*, Stefan Chisca

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Aromatic polyimide films are processed from polyamic acid solutions. This process involved the simultaneous loss of solvent and chemical conversion of polyamic acid to polyimide, and implied structural reorganization which led to changed physical properties. Polymer films generated from benzophenonetetracarboxylic dianhydride and 4,4′-diamino-3,3′- dimethyl diphenylmethane have been investigated at different stages of thermal treatment. The surface polarity, which was determined by the presence of polar COOH and CONH groups, changed during polyamic acid thermal treatment. These polar groups were removed step by step by imidization process leading to the modification of the physical properties of the polymer film.

Original languageEnglish (US)
Pages (from-to)116-121
Number of pages6
JournalMaterials Chemistry and Physics
Issue number1
StatePublished - May 15 2012
Externally publishedYes


  • Atomic force microscopy
  • Heat treatment
  • Polymers
  • Surface properties

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


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