The effect of cesium chloride on thermal properties of poly (vinyl alcohol)‎

الملخص EN

Poly (vinyl alcohol), PVA for short, films doped with different concentrations of cesium chloride (CsCl) (0% , 2% , 4% , 6% , 8% , 10% , 12% , 14% ,16% ) were prepared by solution casting method to study the effect of this salt on thermal properties of PVA by using thermogravimetric analysis (TGA) .It was found that the doped PVA films with concentrations (14% and 16%) of CsCl are more thermal stable than PVA while doped PVA films with concentrations ( 4% and 6% ) of CsCl are less thermal stable than PVA and the doped PVA films with concentration of ( 2% , 8% , 10% and 12%) are almost as thermal stable as PVA.

Fourier transform infrared spectroscopy (FTIR) was also used to investigate complexation between CsCl and PVA and was found that the doped PVA films with concentration (2% , 4% , 6% and 8%) of CsCl show no significant shifts in wave numbers of the characteristic bands of PVA while doped PVA films with concentrations (10%, 12% ,14% and 16% ) of CsCl show a significant shifts to a higher values in wave number of stretching vibration of (-OH) comparing to PVA indicating well complexation between CsCl and PVA.