Study Of Surface Properties And Interactions In Nanocomposites Of Rectorite/Thermoplastic Polyurethane

The interfacial action plays an important effect to the structure and property of the composite materials. The dispersion of nano particles in polymer matrix and the interfacial integration of nano particles and polymer matrix make great contributions in the perfect nano/polymer composite materials. Rectorite (REC) is a kind of natural clay and can be represented by regular (1:1) stacking of mica-like and montmorillonite-like layers, with exchangeable hydrated cations between galleries and the d-space about 2 nm, The study of the interfacial interactions aims at designing nano/polymer composites. Especially the study of surface properties and the modeling of rectorite (REC), polymer and composites will conduce to improve their applications in fields such as catalysis, environment and adsorptions.In this paper, the rectorite is organomodified with two kinds of quaternary ammonium salts and the organomodified rectorite (OREC)/thermoplastic polyurethane (TPUR) named OREC/TPUR are prepared via melt blending. Inverse gas chromatography has been used to investigate the dispersive component of surface energy and the surface acid-base properties of the native rectorite, organic-modified rectorites, thermoplastic polyurethane and the composite of OREC/TPUR using non-polar and polar probes. The interactions of the interface of nanocomposites based polymer were studied after analyzing the correlation of the surface properties of REC and TPUR with the structural and mechanical properties of the composite. The structure model of OREC, TPUR and composite are determined with molecule simulations and the interaction energies are calculated to analysis the interaction between REC and...