Abstract
The effect of corona pre-treatment on the performance of
Al2O3 and SiO2 gas barrier layers
applied by atomic layer deposition onto polymer coated
paperboards was studied. Both
polyethylene and polylactide coated paperboards were
corona treated prior to ALD. Corona
treatment increased surface energies of the paperboard
substrates, and this effect was still
observed after several days. Al2O3 and SiO2 films were
grown on top of the polymer coatings
at temperature of 100 °C using the atomic layer
deposition (ALD) technique. For SiO2
depositions a new precursor, bis(diethylamido) silane,
was used. The positive effect of the
corona pre-treatment on the barrier properties of the
polymer coated paperboards with the
ALD-grown layers was more significant with polyethylene
coated paperboard and with thin
deposited layers (shorter ALD process). SiO2 performed
similarly to Al2O3 with the PE coated
board when it comes to the oxygen barrier, while the
performance of SiO2 with the
biopolymer coated board was more moderate. The effect of
corona pre-treatment was
negligible or even negative with the biopolymer coated
board. The ALD film growth and the
effect of corona treatment on different substrates
require further investigation.
Original language | English |
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Pages (from-to) | 736 - 740 |
Journal | Applied Surface Science |
Volume | 257 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2010 |
MoE publication type | A1 Journal article-refereed |
Keywords
- atomic layer deposition
- corona
- barrier
- packaging material
- silicon oxide
- aluminum oxide