The influence of processing route on the structuring and properties of high-density polyethylene (HDPE)/clay nanocomposites.

Rund Abu-Zurayk, Eileen Harkin-Jones

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The effect of different processing routes on structure and properties of high-density polyethylene (HDPE)-clay nanocomposites was assessed. Different compatibilizer/clay ratios (α) were also studied to determine if interactions exist between processing route and polymer-clay compatibility. HDPE/HDPE-g-MA/clay with α values of 1 to 4 were melt compounded (twin screw extrusion), and then processed via three routes: compression moulding, compression moulding followed by biaxial stretching or blown film extrusion. The structure was examined using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Tensile and oxygen barrier properties were determined. It was found that biaxial extensional forming produced the best enhancement in properties. An interaction between processing route and polymer-clay compatibility is evident. Halpin-Tsai (H-T) model was employed to predict relative modulus values. It showed good agreement with the experimental data. For biaxial extension at α = 4.0, the experimental relative modulus is greater than the predicted value. This may indicate the existence of a “nano” effect at the polymer-clay interface. POLYM. ENG. SCI., 2012. © 2012 Society of Plastics Engineers
Original languageEnglish
Pages (from-to)2360-2368
Number of pages9
JournalPolymer Engineering and Science
Volume52
Issue number11
Early online date04 May 2012
DOIs
Publication statusPublished - 18 Oct 2012

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