التفاصيل البيبلوغرافية
| العنوان: |
Influence of Blending Protocol on the Thermal and Electrical Properties of HDPE/LLDPE/CNT Nanocomposites. |
| المؤلفون: |
Santos, C. M., Montanheiro, T. L. A., Backes, E. H., Passador, F. R. |
| المصدر: |
AIP Conference Proceedings; 2016, Vol. 1779 Issue 1, p040007-1-040007-5, 5p, 1 Black and White Photograph, 2 Charts, 2 Graphs |
| مصطلحات موضوعية: |
THERMAL properties, POLYETHYLENE, CARBON nanotubes, CARBOXYL group, NITRIC acid |
| مستخلص: |
Nanocomposites based on a high density polyethylene (HDPE)/linear low density polyethylene (LLDPE) blend were prepared by melt processing in a torque rheometer using carbon nanotubes (CNT) as a nano-filler and maleic anhydride-grafted linear low density polyethylene (LLDPE-g-MA) as compatibilizer. In order to obtain better dispersion of carbon nanotubes in the polymer matrix, the surface of CNT were functionalized with carboxyl groups by oxidation reactions with nitric acid. Scanning electron microscopy (SEM) results and Raman spectroscopy confirmed the surface modification performed. The effect of three blending protocols was also investigated. In the first blending protocol all the materials were blended simultaneously, in the second blending protocol LLDPE and LLDPE-g-MA were first reinforced with CNT and then this nanocomposite was later blended with HDPE, and in the third blending protocol LLDPE-g-MA was mixed with CNT first and then this masterbatch was diluted with HDPE and LLDPE. The thermal characterization was performed by differential scanning calorimetry (DSC), and the electrical properties were evaluated by electrical conductivity measurements using a Keithley source, Model 2400 SourceMeter®. Carbon nanotubes acted as flow facilitators and/or external lubricants when mixed in the molten state. The blending protocol influences the processing of the nanocomposites. It was observed an increase in the torque with the addition of the masterbatch which can be correlated to increased interactions between phases. The addition of CNT also modify the thermal properties. [ABSTRACT FROM AUTHOR] |
|
Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Scitation.