Crystallization behavior of polymer/montmorillonite nanocomposites.Part I.Intercalated poly(ethylene oxide)/montmorillonite nanocomposites

摘要

The influence of montmorillonite (MMT) silicate layers on the semicrystalline morphology development of the poly(ethylene oxide) (PEO) matrix of PEO/MMT nanocomposites has been investigated by using X-ray diffraction,differential scanning calorimetry,light microscopy and time-resolved simultaneous small- and wide-angle X-ray scattering.The silicate layers act as nucleating agents for the crystallization of PEO,but at high contents also have a retarding effect on the crystal growth.In that case they are non-crystallisable barriers in the crystallization of the PEO matrix.The lamellar semicrystalline structures of pure PEO and the PEO/MMT nanocomposites are,however,identical.