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Effect of Nanoclay Surface Modifier Chemical Reactivity on Morphology and Rheological Properties of PP/PA6 Blend Nanocomposite

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Published/Copyright: September 9, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 28 Issue 4

Abstract

An attempt was made to explore the role of nanoclay surface modifier chemical reactivity on the morphology and the rheological properties of a polypropylene/polyamide6 (PP/PA6 75/25) nanocomposite blend. The Na-MMT surface was modified with two types of cations; a) diamine cation (D-Clay), and b) a combination of diamine and quaternary alkylammonium cations (A-Clay) via cation exchange reaction. The nanocomposites samples compatibilized with PP-g-MA were prepared by melt compounding in an internal mixer. The XRD patterns indicated the intercalated/exfoliated microstructure for both nanocomposite samples. The SEM results showed a significant decreases in the PA6 droplet size, from 3.2 μm of the simple blend to the 0.4 μm in the D-Clay containing sample. Moreover, in the sample containing A-Clay the average droplet size was found to be 1 μm. The D-Clay containing sample showed the rheological properties similar to a simple blend in high frequencies with a nonterminal behavior in low frequencies storage modulus. This was explained by locating of D-Clay layers in the interphase and hence, significantly reducing the effective interfacial tension, α/R. In contrast, the sample containing A-Clay showed an increased complex viscosity and storage modulus within a range of frequencies, which was attributed to presence of a large amount of A-Clay layers in the PP matrix. These types of nanoclay partitioning were explained by the possibility of chemical reaction between amine group of nanoclay surface modifier and maleic group of PP-g-MA compatibilizer or in-situ formed block copolymer. Consequently, the D-Clay layers bounded with PP-g-MA is preferentially located in the interphase, while, the non reactive nanoclay layers (containing alkylammonium cations) is dispersed in the PP matrix by assistance of PP-g-MA. These findings were also evidenced by TEM micrograph of both nanocomposite samples.

3 Mail address: Hossein Nazockdast, Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, Tehran, Iran. E-mail: ,

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Received: 2012-7-14
Accepted: 2013-5-19
Published Online: 2013-09-09
Published in Print: 2013-08-01

© 2013, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Effect of Nanoclay Surface Modifier Chemical Reactivity on Morphology and Rheological Properties of PP/PA6 Blend Nanocomposite
  5. Thermal Mold Design in Consideration of the Temperature Control Fluid Flow
  6. Experimental Assessment of Dispersion Failure of Glass Fiber Reinforced Plastics in a Twin Screw Extruder
  7. Life-stage Analysis of Solvent Induced Fissures under Static Stress in PET Fibers
  8. The Effect of TMPTMA Addition on Electron-beam Irradiated LDPE, EVA and Blend Properties
  9. Flammability and Thermal Characterization of Aluminum Hydroxide Filled with LDPE
  10. The Influence of Vulcanization Agents on Vulcanization Kinetics of Chloride Butyl Rubber
  11. Adhesion Tendency of Polymers to Hard Coatings
  12. Barrier Screw Compounding and Mechanical Properties of EAA Copolymer and Cellulose Fiber Composite
  13. Melt Processing of Wood Cellulose Tissue and Ethylene-Acrylic Acid Copolymer Composites
  14. Experiments and Modelling of Calender Processing for Shear Thinning Thermoplastics between Counter Rotating Rolls with Differential Velocities
  15. PPS News
  16. PPS News
  17. Seikei Kakou Abstracts
  18. Seikei Kakou Abstracts
https://doi.org/10.3139/217.2680

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Effect of Nanoclay Surface Modifier Chemical Reactivity on Morphology and Rheological Properties of PP/PA6 Blend Nanocomposite
  5. Thermal Mold Design in Consideration of the Temperature Control Fluid Flow
  6. Experimental Assessment of Dispersion Failure of Glass Fiber Reinforced Plastics in a Twin Screw Extruder
  7. Life-stage Analysis of Solvent Induced Fissures under Static Stress in PET Fibers
  8. The Effect of TMPTMA Addition on Electron-beam Irradiated LDPE, EVA and Blend Properties
  9. Flammability and Thermal Characterization of Aluminum Hydroxide Filled with LDPE
  10. The Influence of Vulcanization Agents on Vulcanization Kinetics of Chloride Butyl Rubber
  11. Adhesion Tendency of Polymers to Hard Coatings
  12. Barrier Screw Compounding and Mechanical Properties of EAA Copolymer and Cellulose Fiber Composite
  13. Melt Processing of Wood Cellulose Tissue and Ethylene-Acrylic Acid Copolymer Composites
  14. Experiments and Modelling of Calender Processing for Shear Thinning Thermoplastics between Counter Rotating Rolls with Differential Velocities
  15. PPS News
  16. PPS News
  17. Seikei Kakou Abstracts
  18. Seikei Kakou Abstracts
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