Structure-Property Correlations of Poly(Ethylene Oxide) Nanohybrids With Layered Silicates and Silica Nanoparticles

Abstract

Structure and properties of solution intercalated poly(ethylene oxide) (PEO) nanohybrids with silica and clay nanoparticles in comparison with those of PEO/clay nanocomposites are reviewed. Herein, the structure, preparation, morphological behavior, and performance characteristics (mechanical and thermal properties) of PEO nanohybrids are discussed. One distinct approach is presented here: The simultaneous use of hydrophilic fumed silica, unmodified clay and an adsorbing polymer in solution leads to phase separation based on the bridging of particles by polymer chains. PEO/clay/silica hybrids display good thermal stability and show significant property improvements (much lower crystallinity, higher modulus and enhanced thermomechanical properties) compared to PEO/clay hybrids and pure PEO. The reinforcement effect and reduction of crystallinity as a function of fumed silica loading strongly depend on the morphological behavior of nanohybrids. © Springer-Verlag Berlin Heidelberg 2014.