anocomposite packages. It was found that the degradation rate in nanocomposite
films is much slower due to the reduction in O2 permeation.
The reported results indicate that these nanocomposite films are of high potential to use in food packaging
industry because of their extended shelf-life specifications.
Acknowledgement: The authors are thankful to Prof. Kokabi at Tarbiat Modarres University for his wellequipped
laboratory to proceed with this research.
Reference:
1. Q. H. Zeng, A. B. Yu, G. Q. Lu, D. R. Paul, Clay-Based Polymer Nanocomposites: Research and
Commercial Development, Nanosci. & Nanotech. 5 (2005) 1574–1592.
Figure 5: Rancidity of pistachio & almond in (a)
pure LDPE and (b) nanocomposite packages at
45°C after 1 month
It is seen in Figure 5 that the rancidity in
nanocomposite package decreases dramatically for
both almond and pistachio samples.
4. CONCLUSION
In this work, high oxygen barrier films were
successfully produced by utilizing TiO2
/LDPE
nanocomposite. Analysis of these film’s oxygen
barrier properties revealed that oxygen permeation
of the LDPE films decrease significantly as the
nanoparticle content increase in polymer matrix.
Furthermore, the increase of the nanoparticle in
the polymer film significantly affected mechanical
properties such as Young Modulus. The ultimate