Preparation and characterization of PMMA/PVA blend as electrolyte in lithium ion baterry / Husna Azahar

The PMMA/PVA blends were prepared by solvent casting technique. However, there was no free standing film can be obtained from these blends except when 0.2 g PVA was added into the system. From the optical micrograph, it was observed that the blends became damper as the concentration of PVA increased due to the hygroscopic nature of PVA. The FTIR analysis revealed the formation of hydrogen bonding between the carbonyl group of PMMA and the hydroxyl group of PVA. It was also noted from TGA analysis, that all the blends were less stable than in their individual form. DSC analysis confirmed that these PMMA/PVA blends were homogenous.