Fourier transform infrared spectroscopy (FTIR) of modified natural rubber electrolyte containing sodium hydroxide / Adam Aidid Mohamad Suhaili ...[et al.]

The solid polymer electrolyte sample has been prepared via contacting Methyl Grafted natural rubber (MG-49) as a polymer host with inorganic salt which is sodium hydroxide, NaOH -salt by using solution casting technique. Using NaOH as the doping salt is a new technique due to the facts that previous researchers prefer to work with lithium perchlorate. This is because of its advantages such as low lattice energy that ease the complexion with the polymer host, high mobility of charge carrier and absence of crystalline complex formation at low salt concentration. In this study, Fourier Transform Infrared Spectroscopy (FTIR) is used to obtain the infrared spectrum by collecting high spectral-resolution data over wide range simultaneously and to observe the interaction and coordination behaviour of chemical bond inside the methyl grafted rubber when contacting with the Na + ion from the salt. The coordination of the Na + ion from the salt with the polymer host, MG-49 shows a direct proportional relationship as the salt concentration increases, the interaction between the cation of the salt and the anion of the rubber is also increases.