Abstract
In this paper, the nylon 11/nylon 66 alloys were synthesized by in situ polymerization method. For comparison, the blends of nylon 11 and nylon 66 was also fabricated through melt extrusion. The phase morphology of nylon 11/nylon 66 alloys was invested by scanning electron microscope (SEM), differential scanning calorimetry (DSC) and atomic force microscope (AFM) techniques. The rheological behavior was studied on advanced rheometric exnylonnsion system. The SEM and DSC results show that the amorphous nylon 66 is embedded in crystalline nylon 11 matrix and the interface in between them is not clear in nylon 11/nylon 66 alloys, while two separated phases are clearly present in the nylon 1/nylon 66 blends. The AFM results reveal that the crystallinity of nylon 11 is very low, where the plate-like crystals are dominant. However, the introduction of nylon 66 promotes the crystallization of nylon 11 thus the crystals of nylon 11 become smaller. The complex viscosity and viscoelastic modulus are improved in comparison with nylon 1/nylon 66 blends.
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