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Preparation and Characterization of Polyurethane/Polysulfide Miscible Blend Nanocomposites

Effect of Nanoclay Reinforcement on Morphology, Mechanical and Thermal Properties
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Published/Copyright: April 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 27 Issue 4

Abstract

Novel elastomeric miscible blend nanocomposites have been prepared by co-reacting isocyanate terminated liquid polyurethane pre-polymer with thiol terminated polysulfide together with chain extender, modified organic nanoclay, and curator. The studies report the influence of nanoclay loading on the morphology, mechanical and thermal properties of the nanocomposites. The morphology and state of dispersion of nanoclays in the nanocomposites were studied by high resolution transmission electron microscopy (HRTEM). It was seen that nanoclay particles were well dispersed in the blend at 1, 3, and 5 wt.% nanoclay loadings. The reactive miscibility of blend was confirmed by differential scanning calorimetry (DSC) and fourier transform infrared spectroscopy (FTIR). The effect of clay loading on thermal stability of polysulfide PS/IPU blend and their nanocomposites was studied by thermogravimetric analysis (TGA). It was observed that thermal stability of nanocomposite progressively increased with increase in nanoclay loading. However, about 123% increment in adhesive strength, 78% increment in tensile strength were observed at 3 wt.% clay loaded nanocomposite when compared to control blend. This enhancement in thermal, adhesion and mechanical properties demonstrate that the resulting nanocomposites can be tailored as novel adhesive and coating materials for aerospace application.

∗ Mail address: Prasanta Kumar Guchhait, Kalpana Chawala Space Technology Cell, IIT-Kharagpur 721302, India. E-mail:

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Received: 2011-10-18
Accepted: 2012-04-21
Published Online: 2013-04-06
Published in Print: 2012-08-01

© 2012, Carl Hanser Verlag, Munich

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  10. Preparation and Characterization of Polyurethane/Polysulfide Miscible Blend Nanocomposites
  11. Modelling the Solids Throughput of Single Screw Smooth Barrel Extruders as a Function of the Feed Section Parameters
  12. Experimental Investigation and Theoretical Prediction of Extrudate Swell Using Conformational Rheological Models
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https://doi.org/10.3139/217.2581

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. LLDPE/Proton Exchanged Layered Niobate K4Nb6O17 Nanocomposites
  5. Experimental Flow Visualization and Residence Time Distributions in a Co-Kneader
  6. Mechanochemical Milling of PP/Ground Tire Rubber Blends in Solid-State
  7. Development of Polymer Extrusion Extruder for Evaluating with a Small Amount of Polymeric Material
  8. A 3D Simulation Analysis of Reactive Flow in Screw Elements of Closely Intermeshing Twin Screw Extruders
  9. Morphology and Mechanical Properties of Compatibilized Bio-sourced PA/Plasticized Starch Grafted PP Ternary Polymer Blends
  10. Preparation and Characterization of Polyurethane/Polysulfide Miscible Blend Nanocomposites
  11. Modelling the Solids Throughput of Single Screw Smooth Barrel Extruders as a Function of the Feed Section Parameters
  12. Experimental Investigation and Theoretical Prediction of Extrudate Swell Using Conformational Rheological Models
  13. Controllable Self-organization of Polyphenylene Oxide Honeycomb Microstructure
  14. An Investigation on Usage of Sodium Borohydride and Zinc Oxide as Oxygen Scavengers in Polyethylene Terephthalate Films
  15. PPS-News
  16. PPS News
  17. Seikei Kakou Abstracts
  18. Seikei-Kakou Abstracts
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