1.0 Scope This test method establishes a procedure fordetermining the glass transition temperature of organic filmsusing dynamic mechanical analysis (DMA).2.0 Applicable DocumentsASTM D 618 Standard Practice for Conditioning Plastics andElectrical Insulating Materials for Testing3.0 Test Specimen The test specimen shall consist of astrip 22.5 mm long and 6.25 mm wide with a minimum thickness of 5 µm. The analysis is based on the assumption of aconstant specimen geometry, therefore the test specimensmust be stiff enough not to plastically deform during theexperiment.4.0 Apparatus or Material Rheometrics Solids AnalyzerModel RSA-II with a film/fiber fixture or equivalent.