Properties of montmorillonite/ silane-modif ied wood flour/ PVC composites

The surfaces of intercalated montmorillonite (OMMT) and wood flour (WF) were modified by silanecoupling agent Ti-14. They were melt-blended and ext ruded into wood plastic composites samples. The effect s ofthe content s of OMMT and WF on the composites mechanical properties were investigated. The intercalation anddispersion of OMMT were observed by XRD , TEM and SEM. FTIR and XPS were used to analyze the silane modification effect s. The reaction mechanisms were proposed. The graf ting improves the interfacial compliance betweencomponent s and result s in higher properties of the composites. Adding OMMT can reinforce further the composites.However , a thicker interfacial layer which is weak will form and the st ress-concent ration will impair the compositesproperties when the content s of OMMT or coupling agent are higher.