The analysis was conducted in accordance to ASTM E1252:2013 - Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis. Small specimen cut from each Sample 2 and Sample 3 was placed directly onto a Golden Gate Diamond Attenuated Total Reflectance (ATR) accessory and scanned in reflectance mode for 16 times from 4000 cm-1 to 600 cm-1 using FTIR spectrometer (Brand: Nicolet, Model: iS50, S/N: AUP1300565) to obtain its infrared spectrum. The FTIR spectrum of each Sample 2 and Sample 3 was compared against all reference FTIR spectra available in the commercial material library database