화학공학소재연구정보센터
Journal of Applied Polymer Science, Vol.118, No.3, 1683-1690, 2010
Nylon 6 Crystal-Phase Transition in Nylon 6/Clay/Poly(vinyl alcohol) Nanocomposites
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 nartocomposite (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 gamma to the alpha form. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 1683-1690, 2010