Using Raman and FTIR spectroscopy for demonstrate fillers in polypropylene compound structure

Polypropylene (PP), a thermoplastic material is mostly used for its desired properties which respond to the techniques of processing materials. To detect specific chemical linkages, the chemical and physical full structure of polymers, description of qualitative and quantitative analysis of combinations, polymer compounds and spectroscopy are utilized. By the methods of infrared (FTIR) and Raman spectroscopy, this study, it is tried to achieve molecular microstructure and identify linkages that existed in both polypropylene compounds. FTIR and Raman spectrum are considered for both compounds in the areas of 400-4000cm-1. Raman spectroscopy with three different wavelengths including 475nm, 532nm and 785nm was used through which the comparison of spectrum results obtained from three lasers, the presence of filler in both two compounds by relying on the final spectrum in λ=785nm can be proved. Therefore, given the presence of filler was proved in the compounds, it is possible to replace this method with other methods of identifying filler and additives in mixing compounds such as TGA and ASH due to the non-destructive and inexpensive benefits, through Raman spectroscopy in this study.