Fourier transform infrared spectroscopy study of polymer/filler/ionic liquid composites

Abstract The introduction of ionic liquids has emerged as an effective method to enhance the properties of polymer/filler composites, marking significant progress in creating advanced materials for specialized applications. It is crucial to understand and modify the chemical properties of polymer/filler/ionic liquid composites to improve their performance in various domains. These properties significantly affect the composites’ appropriateness for specific uses. In this short review, various polymer matrices, fillers, and ionic liquids used in these composites are identified. Additionally, the influence of ionic liquids on the composites’ chemical properties, analyzed using Fourier transform infrared (FTIR) spectroscopy, is shortly covered. This review spans a decade of research, covering developments from 2013 to 2023 in polymer/filler/ionic liquid composites. It contributes to a deeper understanding of FTIR absorption spectra of the composites. In summary, the increase in peak intensities in the FTIR spectra of polymer/filler/ionic liquid composites correlates with enhanced general characteristics. Furthermore, wavenumber shifts toward higher values in these composites, relative to neat polymers, indicate improvements in specific properties. These enhancements are attributed to the intermolecular interactions among polymers, fillers, and ionic liquids.