XRD and FTIR data of zeolite, modified zeolite, chitosan, pickled hides, and pickled hides after tanning.

XRD and FTIR data of zeolite, modified zeolite, chitosan, acid skin, and tanned acid skin.  Dried collagen samples from pickled collagen, HAc-ZA-TL, and CSHAc-ZA-TL were subjected to crystallinity testing using a D8 diffractometer (BRUKERAXS, Germany). The test conditions were as follows: Cu Kα radiation, tube voltage 40 kV, tube current 40mA, graphite monochromator, scan speed 4°/min, and scan angle 5° – 90°.Dried collagen samples were obtained from pickled collagen, HAc-ZA-TL, and CSHAc-ZA-TL were obtained. Cross-sections of the leather samples were cut using a scalpel and analyzed using a Spectrum100 Fourier Transform Infrared Spectrometer. Spectra were acquired in the 500 – 4000 cm⁻¹wavelength range with 32 scans per sample at a scan frequency of 4 cm⁻¹.