Environmental Engineering Reference
In-Depth Information
3.5
3.0
0%
1%
2%
4%
8%
10%
3.0
2.5
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0.0
0.0
0%
1%
2%
Boron nitride wt%
5%
8%
10%
0.0
0.5
1.0
1.5
2.0
Pressure, psi
(
a
)
(
b
)
Figure 13.7
(a) h e oxygen permeability of cellulose/BN nanobiocomposites with
various loading of BN at constant pressure of 2 psi, and (b) the oxygen permeability of
cellulose/BN nanobiocomposites with various loading of BN at dif erence pressure [24].
13.5 Conclusion
Bionanocomposites were prepared by solution technique with dispersion
of reinforced nanomaterials with biopolymer matrix. h is technology
was developed to improve barrier performance to gases such as oxygen.
It also enhances the barrier performance to ultraviolet rays, as well as
adding strength, stif ness, dimensional stability, and heat resistance. New
plastics created with this technology demonstrate an increased shelf life
and are less likely to shatter. Once perfected, these plastics will of er these
improved characteristics at competitive prices. It will also make them
attractive for use in food and beverage packaging and pharmaceutical
packaging applications.
References
1.
A. Samir, F. Alloin, J.Y. Sanchez, A. Dufresne, Cellulose nanocrystals rein-
forced poly(oxyethylene),
Polymer
, Vol. 45, pp. 4149-4157, 2004.
2.
K.M. Dean, M.D. Do, E. Petinakis, L. Yu, Key interactions in biodegradable
thermoplastic starch/poly(vinyl alcohol)/montmorillonite micro- and nano-
composite,
Comp. Sci. Tech.
, Vol. 68, No. 6, pp. 1453-1462, 2008.
3.
J.K. Pandey, A.P. Kumar, M. Misra, A.K. Mohanty, L.T. Drzal, R.P. Singh,
Recent advances in biodegradable nanocomposites,
J. Nanosci. Nanotech.
,
Vol. 5, No. 4, pp. 497-525, 2005.
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