Structure and properties of polyacrylonitrile / Ca-montmorillonite nanocomposite fibers

The polyacrylonitrile / Ca-montmorillonite(Ca-MMT) nanocomposite fibers were prepared via solution blending and wet spinning.The TEM and X-ray diffraction were used to observe the dispersing of Ca-MMT in the polyacrylonitrile matrix,and the tensile strength of polyacrylonitrile / Ca-montmorillonite(Ca-MMT) nanocomposite fibers was tested using the single fiber tensile tester as a function of the mass fraction of Ca-MMT.The results indicated that the Ca-MMT which has been subjected to UV radiation and ultrasonic vibration treatment can well disperse in the polyacrylonitrile matrix so that the tensile strength of the fibers is enhanced.