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The plastic deformation behavior of isotactic polypropylene (iPP) film is studied with in-situ Fourier transformation infrared microspectroscopic imaging (FTIRI). During uniaxial tensile test, spatial distributions of crystallinity and orientations are obtained in necking region (NR), transition front (TF) and non-necking region (NNR). A low valley of crystallinity exists at TF, while both NNR and...
The crystal–crystal transition of isotactic polybutene-1 (iPB-1) from form II to I at room temperature is investigated with in-situ Fourier transform infrared spectroscopy (FTIR), Fourier transformation infrared microspectroscopic imaging (FTIRI) and synchrotron radiation scanning X-ray micro-diffraction (SR-μSXRD). The transition rate from form II to I shows a non-monotonic correlation with crystallization...
The deformation behaviors of three types of polyethylene (PE) with different molecular weights and short chain branch contents were studied by in-situ Fourier transformation infrared microspectroscopic imaging (FTIRI) with a Focal Plane Array (FPA) detector during uniaxial tensile test. The crystal orientation distributions within a 250 × 250 μm 2 region during tensile test were obtained,...
The deformation behavior of a single spherulite embedded in quenched isotactic polypropylene (iPP) film is studied with in-situ infrared microspectroscopic imaging (FTIRI) with Focal Plane Array (FPA) detector during uniaxial tensile test. Imaging an area of 250 × 250 μm 2 with 4096 Fourier transform infrared (FTIR) spectra, the absorption distributions of crystalline (998 cm −1 band)...
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