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Rheology, Mechanical and Thermal Properties of C18-CNT/LDPE Nanocomposites

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International Polymer Processing
From the journal International Polymer Processing Volume 28 Issue 1

Abstract

Nanocomposites of low density polyethylene (LDPE)/C18 modified multi wall carbon nanotubes (C18-CNT) were prepared by melt blending. The effect of C18-CNT loading and compatibilizer (maleic anhydride modified polyethylene, MAPE) on the morphology, mechanical, thermal and rheological properties of LDPE was studied. FE-SEM images of nanocomposites show reduced agglomeration of the in LDPE/C18-CNT in comparison with uncompatibilized C18-CNT. For uncompatibilized nanocomposites, yield strength and Young's modulus increased with loading of C18-CNT. Ultimate strength, show improvement up to 2 wt% loading. However, percent elongation and toughness were reduced for C18-CNT at all loadings. Apart from elongation and toughness, addition of compatibilizer improved all mechanical properties as compared to pure LDPE and nanocomposites without compatibilizer. Percent crystallinity shows a correlation with Young's modulus. Both, Young's modulus and total crystallinity increased with C18-CNT loading and further increase with the incorporation of compatibilizer was observed. Results of phase angle suggest no presence of network. Also, addition of C18-CNT did not increase strain hardening, maintained extensional viscosity and time of break up to 1.5 s−1 Hencky rate. The C18 modifier is viewed to act similar to a long chain branching on linear polymers. The C18 modification of CNT resulted in reduced viscous and elastic properties of the composites. In turn, this is expected to lead to enhancement in the processing of these composites. Overall, compatibilized C18-CNT resulted in improved mechanical properties and better processing behavior.

* Ibnelwaleed A. Hussein, Department of Chemical Engineering and Center of Research Excellence in Petroleum Refining & Petrochemicals, KFUPM, Dhahran 31261, Saudi Arabia E-mail:

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Received: 2011-11-24
Accepted: 2012-8-28
Published Online: 2013-08-22
Published in Print: 2013-03-01

© 2013, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Rheology, Mechanical and Thermal Properties of C18-CNT/LDPE Nanocomposites
  5. Study of Heat Absorption in Thermoforming for Transparent and Filled Polystyrene
  6. Molecular Dynamics Study on Permeability of Gas Molecules through Amorphous PPX Polymers
  7. Melting Model for Starve Fed Single Screw Extrusion of Thermoplastics
  8. Crystallization Behavior of Polypropylene-graft-cardanol Prepared by Reactive Extrusion
  9. Influence of Extrusion Conditions on Fiber Breakage along the Screw Profile during Twin Screw Compounding of Glass Fiber-reinforced PA
  10. Effect of Hexamethylene Diisocyanate as Compatibilizer on the Mechanical Properties of Banana Fiber/Poly(butylene succinate) Composites
  11. Improving Melt Strength of Polylactic Acid
  12. Limitations of Simple Flow Models for the Simulation of Nanoimprint
  13. Joint Strength for Laser Transmission Welding of Thermoplastics: A Simulation Approach
  14. Comparison of Numerical and Experimental Data in Multi-objective Optimization of a Thermoplastic Molded Part
  15. PPS-News
  16. PPS-News
  17. Seikei Kakou Abstracts
  18. Seikei Kakou Abstracts
  19. Polímeros: Ciência e Tecnologia Abstracts
  20. Polímeros: Ciência e Tecnologia Abstracts
https://doi.org/10.3139/217.2587

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Rheology, Mechanical and Thermal Properties of C18-CNT/LDPE Nanocomposites
  5. Study of Heat Absorption in Thermoforming for Transparent and Filled Polystyrene
  6. Molecular Dynamics Study on Permeability of Gas Molecules through Amorphous PPX Polymers
  7. Melting Model for Starve Fed Single Screw Extrusion of Thermoplastics
  8. Crystallization Behavior of Polypropylene-graft-cardanol Prepared by Reactive Extrusion
  9. Influence of Extrusion Conditions on Fiber Breakage along the Screw Profile during Twin Screw Compounding of Glass Fiber-reinforced PA
  10. Effect of Hexamethylene Diisocyanate as Compatibilizer on the Mechanical Properties of Banana Fiber/Poly(butylene succinate) Composites
  11. Improving Melt Strength of Polylactic Acid
  12. Limitations of Simple Flow Models for the Simulation of Nanoimprint
  13. Joint Strength for Laser Transmission Welding of Thermoplastics: A Simulation Approach
  14. Comparison of Numerical and Experimental Data in Multi-objective Optimization of a Thermoplastic Molded Part
  15. PPS-News
  16. PPS-News
  17. Seikei Kakou Abstracts
  18. Seikei Kakou Abstracts
  19. Polímeros: Ciência e Tecnologia Abstracts
  20. Polímeros: Ciência e Tecnologia Abstracts
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