Study on Dynamic Mechanical Properties of n-HA/PA66 Composites

Abstract:

The dynamic mechanical properties of nano-hydroxyapatite (n-HA) reinforced polyamide 66 (PA66) biocomposites were studied with reference to the effect of n-HA content, frequency and physiological saline. The intrinsic properties of the components, morphology of the system and the nature of interface between the phases determine the dynamic mechanical properties of the composite. The storage modulus (E') values of n-HA/PA66 composites were much higher than those of pure PA66, indicating that the incorporation of n-HA in PA66 matrix induced reinforcing effects obviously. And the E' values of composites increased with increasing of n-HA content. The loss modulus (E") of the composite with 30wt% n-HA was higher that those of pure PA66 and the composite with 40wt% n-HA below 55°C, however, above 55°C, the E" values enhanced with increase of n-HA content. Both frequency and physiological saline had obvious effects on the dynamic mechanical properties for n-HA/PA66 composite. E' and E" values enhanced with increase of frequency, but tanδ values decreased with increasing of frequency. After soaked in physiological saline, the E' and E" values of the composite decreased.

• Periodical: Advanced Materials Research (Volumes 418-420)
• Pages: 1511-1515
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.418-420.1511
• Online since: December 2011
• Authors: Lin Cheng, Xiang Zhang, Yu Bao Li
• Keywords: Biocomposite, Dynamic Mechanical Analysis, Nano-Hydroxyapatite, Polyamide 66

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