Abstract
The aim of this research is mainly to study the melting and crystallization behavior of polyamide 6 (PA6) when interacting with different nanofillers. The results show that the addition of nanofillers causes the increase of the peak temperature ( T p) during crystallization, which can be explained by the nucleation effect of the nanofiller. For PA6 and nanocomposites, the α crystal is the dominant crystalline phase. However, the γ form crystal appeared in PA6 containing montmorillonite (MMT) and SiO 2, while the crystallization did not appear in the composites with carbon nanotube (CNTs). For the PA6/CNTs nanocomposites, the length and surface properties of CNTs also had an effect on the crystallization of PA6. Although there are more –COOH groups on the surface of CNTs1 #, the crystallization degree of PA6/CNTs1 # is the lowest. The area of the melting peak of CNTs3 # is relatively large for a shorter size. The crystal-particle distribution is also varied for different dimensions of CNTs treated using three methods and the width of the melting peak of PA6/CNTs3 # is the largest.
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