The composite materials were prepared by inserting polyvinyl alcohol(PVA)molecules into the Na-montmorillonite(NaMMT)using solution intercalated method.The effect of NaMMT content on the properties of polyvinyl alcoho/montmorillonite(PVA/MMT)nanocomposite was studied.The structure and properties of composite wered studed by X-ray diffraction(XRD),and scanning electron microscopy(SEM).The XRD patterns show that when the d value of the silicates layers of NaMMT increased from 1.26 nm to 2.56 nm and 2.77 nm,th...