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- Title
Polyamide 66/ Maleic Anhydride Ethylene Ethyl Acrylate (PA 66/ EEA-g-MA) MWNT Blend Nanocomposites.
- Authors
J. JEYARAJ; A. U. SANTHOSKUMAR; N. SIVAPATHAM; PALANIVELU, K.
- Abstract
Polyamide 6,6/ Maleic anhydride grafted Ethylene ethyl acrylates (PA 6,6/EEA-g-MA) blends and their nanocomposites were prepared by melt compounding using a twin screw extruder. The mechanical properties and morphology of these blends and their nanocomposites were investigated. Impact and tensile test results showed that rubber toughened samples exhibit significantly more impact strength and elongation at break comparing to virgin PA 6,6. Samples with 15% of toughening phase show impact strength about 102 times and elongation at yield 24% times more than those of virgin PA 6,6. So, this EEA-g-MA modified PA 6,6 can be considered as super toughened Polymer. A Multi wall nanotube (MWNTs) at 0.15Phr and0.30 Phr has been used with elastomer toughened samples to tolerate their modulus and tensile strength. Obtained results show that MWNTs could significantly increase modulus and tensile strength of rubber modified PA 6,6 without considerable effects on impact strength. Electrical properties reported that to increase the MWNTs from 0.15 to 0.60 (Phr) gradually decrease the electrical conductivity. Morphological investigations of Transmission Electron Microscopy (TEM) show pseudo-one-phase type morphology for these prepared blends at all percentage of MWNTs content. Scanning Electron Microscopy (SEM) reveals MWNTs finely dispersed in the PA6,6 and PA 6,6/EEA-g-MA matrix. X-Ray Diffraction (XRD) shows low d-spacing value which indicates the well dispersion of MWNTs in the PA 6,6/EEA-g-MA phase. Differential Scanning calorimetric (DSC) thermogram attributed the melting temperature of the PA 6,6 decreased, which is proving the incorporation of elastic domain on the PA 6,6/EEA-g-MA/MWNTs. The TGA shows the plot of thermal degradation of PA 6,6 is increases with incorporation of the EEA-g-MA 15 Wt (%) present in the PA 6,6 matrix and the various parts of the MWNTs.
- Publication
Turkish Journal of Science & Technology, 2013, Vol 8, Issue 2, p131
- ISSN
1308-9080
- Publication type
Academic Journal