Study on Melt-Processing Properties of Modified PVA
The effects of four processing modifiers including water, glycerine, polyethylene glycol and caprolactam on melt-processing property of PVA were studied by melt flow rate testing machine. PVA films were prepared by flat sulphuration machine and the film-forming properties of different modified PVA systems were observed. The results indicated that these processing modifers improved the melt-processing property of PVA in varying degrees, among these, PVA modified by caprolactam had best melt-processing property. The modified PVA could be made into transparent films by hot-pressing method. Melt flow rate testing machine could determine the melt-processing property of modified PVA system effectively.
NETL
NSTL
万方数据
维普
