Re: Techniques to determine diffusion coefficient

Posted by Ritesh Dewan on April 02, 2005 at 14:53:53:

In Reply to: Techniques to determine diffusion coefficient posted by hung bat on March 09, 2005 at 18:19:51:

There are number of analytical- experimental techniques which can be used to determine the diffusion coefficient through polymer interfaces.They are summarized as follows:

1. Scanning infrared microscopy
-infrared microdensitometry
-scanning infrared microscopy

2. light scattering
-optical Schlieren technique
-spectroscopic ellipsometry
-dynamic light scattering

3. Neutron scattering
-small-angle neutron scattering (SANS)
-neutron reflection spectroscopy (NRS)

4.Raman scattering
-surface-enhanced Raman scattering (SERS)

5. Infrared spectroscopy
-external reflection infrared spectroscopy
-attenuated total reflectance spectroscopy
-transmission FTIR
-reflection absorption spectroscopy
- attenuated total reflection
microspectrometry.

6 Other methods
-Photon correlation spectroscopy
-Donor-acceptor fuorescence method
-Small-angle x-ray scattering (SAXS)
-Electron microprobe analysis
-Nuclear reaction analysis (NRA)
-Ellipsometry
-Electrical Impedance Spectroscopy