Chemical Crosslink Degradable PVA Aqueous Solution by Potassium Persulphate

The aim of this paper is to study the influence of the K2S2O8 content on the properties of poly (vinyl alcohol, (PVA). Firstly, PVA was dissolved in distilled water by heating by heating at 70 A degrees C and then K2S2O8 was added in PVA solution under stirrer. The viscosity of PVA solution in the presence of K2S2O8 was analyzed by Brookfield Viscometers. The effects of K2S2O8 contents, PVA solution, temperature and reaction time on the viscosity of PVA solution were investigated. This was confirmed by Brookfield Viscometers. It is clear that the viscosity of PVA solution in the presence of K2S2O8 increased as function of reaction time and PVA content in solution. Rate of modified PVA was proportional to K2S2O8 contents and temperature and its activation energy was 16 kJ/mol. The structure of PVA in the presence of K2S2O8 changed from original PVA confirmed by ATR-FTIR and solid state NMR. In addition, the thermal properties of PVA containing K2S2O8 were also studied by TGA.