The quantification of di‐octyl terephthalate and calcium carbonate in polyvinyl chloride using Fourier transform‐infrared and Raman spectroscopy

The polyvinyl chloride (PVC) industry relies heavily on material property testing during the development of a product. Many these procedures are outdated and time-consuming, resulting in high financial input. Non-destructive, fast, easy-to-use methods can significantly reduce time required to quantify raw materials. We explored alternative analysis techniques, Fourier transform-infrared (FT-IR) micro-Raman spectroscopy main components within plasticised PVC (pPVC) compound with dioctyl terephthalate (DOTP) plasticizer calcium carbonate filler. This costs new products up 50%. prepared 36 samples varying proportions DOTP analyzed them using Raman Microscope FT-IR Spectrometer. found strong correlation (R2 = 0.923) between data, as well (FT-IR R2 0.910; 0.813) data obtained both spectroscopies. reported for first-time correlations that could be used determine levels pPVC provided by techniques. Five were then made tested, showing some success quantification. study solid baseline reducing taken make recommendation from >168 h <1 therefore product