Thermal and IR studies on copper doped polyvinyl alcohol

[摘要] 5 mol% PVA : ð‘�? mol% Cu²⁺ polymer films were prepared by casting process. Thermal transitions and thermal degradation of samples with respect to copper concentration were studied by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), respectively. Increase in glass transition temperature as a function of copper concentration shows a strong branching and steric effects in copper doped PVA complexes. Thermal degradation of films to an extent of 4â€�??5% was found with an increase in copper content. FTIR spectrum of PVA doped Cu²⁺ ions indicate the presence of Oâ€�?�H, Câ€�?�H, C=C and Câ€�?�O groups.

[学科分类] 材料工程

[关键词] Polyvinyl alcohol;differential scanning calorimetry;thermogravimetric analysis;Fourier transform infrared spectroscopy (FTIR).