Polysulfone, Fourier transform

Figure 8. Fourier transform dielectric spectrometer data for polysulfone containing clustered and urmssociated water...

Garside and Wyeth [60] have used Fourier transform infrared spectroscopy to characterise cellulose fibres such as jute, sisal, and cotton. The technique has also been used to determine low levels of polyvinyl pyrrolidinone in polysulfone [61]. Weiss and co-workers [62] used Fourier transform infrared microspectroscopy in the study of organic and inorganic phases of an injectable hydroxypropylmethylcellulose-calcium phosphate composite for bone and dental surgery. 

The polymers included in this study are bisphenol-A polycarbonate (Bis-A PC), polyesteicarbonates (PEC), whose structures are defined in Figure 1, phenolphthalein bisphenol-A copolycarbonate, and polysulfone. All samples were compression molded and physically aged as described elsewhere, with the exception of those for the Fourier transform infrared (FTIR) measurements and solid state variable temperature nuclear magnetic resonance (VTNMR)... 

It was later shown that the introduction of functional groups, such as sulfonate groups, into the polysulfone polymer entity resulted in the formation of miscible blends with PBI. Further, the degree of sulfonation as well as the overall blend composition controls the observed miscibility behavior. Fourier Transform (FT-IR) Analysis showed that the observed miscibility is due to spedfic interactions between the N-H group on the PBI and the sulfonate groups on the polysulfone. 

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