Preparation And Structural Characterization Study Of Electrospun Polyamide6/Montmorillonite Nanofibers

In the study, the composite nanofibers, the structure characterization of which was studied using modern analytical equipment, were obtained using the electrospinning. The study of electrospun polyamide6/montmoril- lonite nanofibers will promote the development of composite nano-materials, and will also provide some basic understandings related to its potential applications.8%wt montmorillonite dispersed in DMF solution was selected in this work after analyzing the dispersion of montmorillonite, subsequently, which was compounded with polyamide6 solution. The composite nanofibers were produced by electrospinning technique. The proportion of composite solutions was confirmed according to the image analysis by video microscope. The structures of nanofibers were detected by SEM and the SEM images revealed that the addition of montmorillonite led to the decrease in the fiber diameter and narrower diameter distribution. The nanofibers formed fibrous non-woven web with smooth fibers when containing 1%wt montmorillonite. The non-woven web appeared beaded nanofibers, however, when the addition was added to 2%. The AFM images with a much higher resolution further revealed the surface morphology of the nanofibers. It was observed that nanofibers seemed to be much more ravine-shape structure and wide height movement with the increasing of montmorillonite content. The TEM images revealed the good dispersion and exfoliation of MMT layers in the nanofibers and the clayers were almost aligned along the nanofiber axis. In addition, the composite structure of the nanofiber was studied using FT-IR, which could further explain the good dispersion of montmorillonite. The roughness average of the nanofiber surface was reported from transverse and axis directions using AFM software.Moreover, the addition of montmorillonite in the nanofibers improved the thermal stability of nanofibers, which was tested using TGA instrument. Finally, the CDCA was used to detect the dynamic water adsorption of samples. It was found that the dynamic water adsorption was improved in PA6/O-MMT nanofiber mats compared with neat PA6 nanofiber mats, and the water adsorption increased as the more montmorillonite was added in the nanofibers.