Quantitative Characterization of Polymer Structure by Photoacoustic Fourier Transform Infrared Spectroscopy

Abstract

Photoacoustic Fourier transform infrared (PA-FTIR) spectroscopy is not a widely used analytical technique with only a few quantitative applications to polymers reported. To explore the potential use of PA-FTIR in quantitative polymer analyses the determination of vinyl acetate in EVA, acrylonitrile in NBR, ethylene in EPDM, styrene in SBR, and vinyl-butadiene in SBR were studied. The results indicate that despite the theoretical complexities of PA-FTIR, simple quantitative relationships can be found for many of these polymer analyses.

Ftir Spectroscopy: A Useful Tool for Structural Determination of Polyaniline and its Nanocomposites

“…Apart from the abovementioned qualitative applications, FTIR spectrophotometry has proved useful in quantitative determinations. For example, quantitative application of FTIR spectrophotometer in i b u p r o f e n in pharmaceutical f o r m u l a t i o n s 25 , g y p s u m r a w materials 26 , OH populations in mineral grains 27 , moisture in lubricants 28 and characterisation of polymer structure 29 . In 2002, Maillard et al reported the application of FTIR spectroscopy in the quantitative ester determination of ester functionalised polyolefi ns [30][31][32] followed by Anbarasan and co-workers [33][34] , who worked on thioester-functionalised HDPE.…”

Quantitative analysis of unknown compositions in ternary polymer blends: A model study on NR/SBR/BR system

“…1). Characteristic IR transmittance bands for NR, SBR and BR are given in Table 1 [48,49]. The frequencies selected for the characterizations of the blends in this study are 1375, 967 and 699 cm À1 .…”

A left testicular artery arising from a middle mesenteric artery

“…FTIR spectra of EVA after saponification for 6 h indicated that some of the vinyl acetate units remained because the CO stretching band still appeared at 1,650–1,775 cm −1 . The composition of saponified EVA and their %saponification were determined from the FTIR absorbance ratio of methyl group of vinyl acetate unit (1,370 cm −1 ) and the methylene group of the ethylene unit (720 cm −1 ) [13] with Eq. 1.…”

“…The percent saponification (%saponification) of the EVA was determined from FTIR absorbance ratio of methyl group of vinyl acetate unit (1,370 cm −1 ) and the methylene group of the ethylene unit (720 cm −1 ) [13] with Eq. 1.…”