Characterization of Vinyl Polymer Blends using FTIR Spectroscopy

Characterization of Vinyl Polymer Blends using FTIR Spectroscopy 

F ieZO.I FTIR spectra of the blends, (a) The carbonyl absorbance region (b) The hydroxyl group absorbance region. Reprinted with permission from Ref [39] 2011, Elsevier. 

PVPh content was 60 mass%, orientation was clearly detectable and varied linearly for both components of the blend. This was in contrast to the PVPh orientation in blends with polyethylene oxide (PEO) and with polyvinylmethylether (PVME), which was attributed tentatively to a change in the relaxation regime. 

F re20.4 FTIR spectra recorded at ISO C in the 2700-4000cm region for pure PVPh and various PVPh/PVP blends, (a) 100/0 (b) 80/20 (c) 60/40 (d) 40/60 (e) 20/80. Reprinted with permission from Ref [49] 2001, American Chemical Society. 

The diffusion of water in thin layer films of thickness I is assumed to follow Pick s second law. A widely used approximation is that at short times (up to Mt/ Moo = 0.5), the amount of substance diffused is proportional to and is given by  

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