Synthesis and Characterization of Polyamide-66/Calcium Carbonate Composites

Ghadami Jadval Ghadam, Aboutaleb; Karimi, Hajir

doi:10.22059/jchpe.2015.9962

Synthesis and Characterization of Polyamide-66/Calcium Carbonate Composites

Document Type : Research Paper

Authors

¹ Department of Petroleum and Chemical Engineering, Yasouj Branch, Islamic Azad University, Yasouj, Iran

² Department of Chemical Engineering, Yasouj University, Yasouj, Iran

10.22059/jchpe.2015.9962

Abstract

Polyamide-66(PA66)/CaCO₃ micro- and nano-composites were prepared using a polymer solution method at filler loading of 0, 1, 2 and 3 weight percent. Nano-size of CaCO₃ was synthesized by micro-emulsion technique. The material was characterized by XRD, SEM, FTIR and UV-VIS techniques. XRD results of composites suggested that CaCO₃particles are found in the amorphous phase of the semi-crystalline thermoplastic and α-crystalline form of thermoplastic is thermodynamically more stable than the γ-crystalline forms at room temperature. The uniform dispersion of 1, 2, and 3 wt. % surface modified micro- and nano-CaCO₃within PA66 were evidenced from SEM images. FT-IR analysis confirmed the chemical structure of the PA66. Absorption peaks for all required chemical groups were showed in the FTIR spectra: N-H stretch at 3305.52 cm^-1, C-H stretch at 2865.02-2936.45 cm^-1, Amide-I at 1638.76 cm^-1, and Amide-II at 1539.55 cm^-1. UV-VIS data showed that the presence of CaCO₃ particles in PA66 results in the decrease of energy-band gaps of the composites. In addition, the results showed that incorporation of CaCO₃ particles increased the modulus and tensile strength of neat PA66 however decreased its yield and elongation at break.

Keywords

References

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