• blends;
  • nylon;
  • organoclay


A study of the dependence of the poly(vinyl alcohol) (PVA) content on the nylon 6 crystal-phase transition properties and PVA morphologies of nylon 6/clay nanocomposite (NYC)/PVA specimens was conducted. The degree of compatibility between NYC and PVA was examined by dynamic mechanical analysis measurement. The strong hydrogen bonding between the nylon 6 and PVA molecules led to nearly complete inhibition of PVA crystallization when the PVA contents were less than 16.7 wt %. Moreover, scanning electron microscopy analysis indicated that the clays originally present in the nylon 6 matrices migrated gradually into the PVA phases with increasing PVA content in the NYC/PVA series specimens. This interesting migration of clay from nylon 6 to PVA led to a nylon 6 crystal-phase transition from the γ to the α form. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010