Paper Title:
Microfibril-Reinforced Composites from PE/PET Blends: Effect of Reinforcement Size on Oxygen Permeability
  Abstract

The objective of this study was to manufacture and investigate the properties of barrier films made from microfibril-reinforced polymer composites (MFCs) based on blends of linear low density polyethylene (PE) and poly(ethylene terephthalate) (PET). Blends containing 30 wt% of PET were prepared and extruded into strands. These were then subjected to cold drawing and compression moulded into thin films. The permeability of the films to oxygen gas was measured using a permeation test chamber and the effect of the draw ratio on the size of the reinforcing fibrils was also observed. Scanning electron microscope (SEM) revealed substantial differences in the structures of neat and MFC films. A model developed for predicting the permeability of filled polymer composite films was modified and compared to the test results. The draw ratios of the MFCs did not appear to have a significant effect on oxygen permeation, despite altering the dimensions of the reinforcing fibrils. The MFC films were found to be half as permeable as the neat polymer films.

  Info
Periodical
Key Engineering Materials (Volumes 334-335)
Edited by
J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
Pages
249-252
DOI
10.4028/www.scientific.net/KEM.334-335.249
Citation
R.J. Shields, D. Bhattacharyya, S. Fakirov, "Microfibril-Reinforced Composites from PE/PET Blends: Effect of Reinforcement Size on Oxygen Permeability ", Key Engineering Materials, Vols. 334-335, pp. 249-252, 2007
Online since
March 2007
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$32.00
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