ABSTRACT
Vinyl Acetate (VAc) (Shanghai Chemical Reagent Co., China), was distilled to remove the inhibitor, and then stored in the refrigerator to use. Polyvinylpyrrolidone (PVP, Mw 4*104 gmol−1, K-30) was supplied by Guoyao Group of Chemical Reagents Ltd. NaHSO3 and K2S2O8 (Tianjin Chemical Reagents Plant, China) were used as initiators without further purification. Isopropanol (Guoyao Group of Chemical Reagents Ltd) and homemade deionized water were used as the polymerization medium.
