Analyte
Solid and liquid polymers; composites, materials, organic and anorganic low-molecular substances, thin layers
- Sample amount: ca. 1 mg, > ca. 10ng (FTIR microscope)
Equipment
- Device: Fourier Transform Spectrometer Nexus 470 (Thermo Nicolet, USA) with attached IR microscope Advanced Analytical Plan (Spectratech, Great Britain)
- Wave number area: 7400 cm-1 - 350 cm-1, 7400 cm-1 - 600 cm-1 (FTIR microscope)
- Resolution: 0,5 cm-1 - 32 cm-1
- Local resolution (FTIR microscope): ca. 10 µm (limited by diffraction)
- Detectors: DTGS-KBr, MCT-A (FTIR microscope)
- Accessories: ATR units (among others Smart Endurance, Smart OMNI Sampler, Horizontal ATR (multiple reflection), ATR with variable incident angle, ATR elements from diamond, ZnSe, Ge, Si, KRS-5 with measuring surface of ca. 2mm diameter to 1cm x 5cm and 3cm x 3cm), reflection unit with variable angle (15° - 85°), polarizer, wet chamber, cuvettes (KBr, NaCl, KRS-5, BaF2, different thicknesses), software for spectra analysis, spectra libraries
Analysis methods and response values
Measuring of infrared spectra with unpolarized or polarized radiation
- Transmission spectra
- ATR spectra (attenuated total reflection, "internal" reflection)
- Reflection spectra ("external", "mirroring" reflection)
- Reflection at grazing incidence (GIR, IRRAS)
Aim
- Identification of polymers and low-molecular substances incl. impurities and additives, also on microscale
- Determination of the chemical composition (functional groups) and the sterical chain structure
- Characterization of surfaces
- Examination of the orientation of macromolecules and groups at massive samples and thin layers
- Spectroscopic examination at variable moisture content
Application examples
Contact
Dr.Andreas Büchtemann
Research devision
Functional Polymer Systems
phone +49 (0) 331/ 568-1918 oder 1900
fax +49 (0) 331/ 568-3915
email buechte@iap.fraunhofer.de
Research devision
Functional Polymer Systems
phone +49 (0) 331/ 568-1918 oder 1900
fax +49 (0) 331/ 568-3915
email buechte@iap.fraunhofer.de
Comparative and additional methods