FTIR-Plastics: a Fourier Transform Infrared Spectroscopy dataset for the six most prevalent industrial plastic polymers.

Two datasets are presented: FTIR-Plastics-C4 and FTIR-Plastics-C8, comprising 6,000 spectra obtained through Fourier Transform Infrared Spectroscopy (FTIR) applied to the six most used synthetic polymers: Polyethylene Terephthalate (PET), High-Density Polyethylene (HDPE), Polyvinyl Chloride (PVC), Low-Density Polyethylene (LDPE), Polypropylene (PP), and Polystyrene (PS). The key feature of the datasets lies in the FTIR analysis, which reports the percentage transmittance as the intensity measure as a function of the wavelength of an Infrared light source, expressed as wavenumber (with units in cm-1). FTIR analysis was performed using a Jasco FTIR PRO 4x spectrophotometer with a wavenumber resolution setting of 8 cm-1 for FTIR-Plastics-C8 and 4 cm-1 for FTIR-Plastics-C4, both employing a configuration of 32 scans and a range from 4000 to 400 cm-1. The datasets are presented in CSV (comma-separated values) format, including the following information (per each column): · IDE: unique identifier of the sample. · Polymer: type of synthetic polymer (PET, HDPE, PVC, LDPE, PP, or PS). · Technique: Type of technique used (FTIR). · Sample: polymer sample number. · BR: scanning configuration (32). · RST: resolution configuration (8 or 4 cm-1). · Data (x) y Data(y): 1884 pairs of columns for FTIR-Plastics-C8 and 3751 pairs of columns for FTIR-Plastics-C4, representing values on the "x" axis (wavenumber) and the "y" axis values associated with molecular vibration intensities, indicating the transmittance (%), which differentiates each polymer. Additionally, the files generated by the Jasco spectrophotometer for each polymer are provided, which were standardized by adding a header with the following structure: · TITLE SAMPLE NAME: referring to the name of the analyzed polymer. · DATA TYPE: specifying the characterization technique. · MEASUREMENT INFORMATION: equipment used for data collection. · MODEL NAME: name of the equipment used. · SERIAL No: serial number assigned to the equipment used. · ACCESSORY: complementary device integrated into the equipment. · LIGHT SOURCE: standardized light source related to the DLATGS detector. · RESOLUTION: parameters are used to distinguish the wavenumber in the analyzed materials. · XUNIT/HORIZONTAL AXIS: referring to the unit’s title assigned on the x-axis. · YUNITS/VERTICAL AXIS: referring to the unit’s title designated on the y-axis. · FIRSTX: initial value set for the x-axis. · FIRSTY: initial value set for the y-axis. · LASTX: final value set for the x-axis. · LASTY: final value set for the y-axis. · NPOINTS: total data points in the file.