The present invention discloses water-soluble compositions comprising a
blend of poly(ethylene oxide) and poly(vinyl alcohol) that have improved
ductility over water-soluble compositions comprising poly(vinyl alcohol)
alone. In one desirable embodiment of the present invention, the
poly(ethylene oxide) component of the blend is grafted. Grafted
poly(ethylene oxide) resins have improved processability and improved
blend compatibility with poly(vinyl alcohol). Films comprising a melt
blend of poly(vinyl alcohol) and grafted poly(ethylene oxide) have
improved melt processability as well as other improved properties. Films
comprising compositions of the present invention have improved ductility
over films comprising poly(vinyl alcohol) alone while retaining much of
the high strength and water solubility exhibited by such poly(vinyl
alcohol) films.
