1. Crystallization behavior of polyamide 6/halloysite nanotubes nanocomposites
- Author
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Guo, Baochun, Zou, Quanliang, Lei, Yanda, Du, Mingliang, Liu, Mingxian, and Jia, Demin
- Subjects
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CRYSTALLIZATION , *POLYAMIDES , *HALLOYSITE , *NANOTUBES , *CALORIMETRY , *X-ray diffraction , *POLARIZATION microscopy - Abstract
Abstract: Non-isothermal crystallization and the polymorphism of the PA6 and the polyamide 6/halloysite nanotubes (PA6/HNTs) nanocomposites are studied by adopting differential scanning calorimetry (DSC) analysis, X-ray diffraction (XRD) analysis and polarized optical microscopy (POM) observations. HNTs act as nucleating agent and accelerate the crystallization. The kinetics analysis indicates that the fold-surface free energy of PA6/HNTs nanocomposites is larger than that of neat PA6. The increasing tendency of the fold-surface free energy of PA6/HNTs nanocomposites is restricted at higher HNTs loading. Interestingly, the crystallinity of the PA6/HNTs nanocomposites increases with cooling rate. HNTs content is found to have a significant effect upon the crystallinity of the PA6/HNTs nanocomposites, and the crystallinity reaches its maximum with 5phr of HNTs content. Moreover, the higher HNTs content is, the larger percentage γ-phase crystals take up. The crystallization behavior of the PA6/HNTs nanocomposites is correlated with the multiple roles of HNTs in the crystallization of PA6. [Copyright &y& Elsevier]
- Published
- 2009
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