Abstract
Thin Al2O3 coatings were deposited at low temperatures of
80 or 100°C on various polymercoated boards and plain
polymer fi lms using the atomic layer deposition (ALD)
technique. The work demonstrated that such ALD-grown
Al2O3 coatings signifi cantly enhance the barrier
performance against oxygen and water vapour. Even
extremely thin (25 nm) barrier coatings of Al2O3 could be
suitable barrier layers for dry food and pharmaceutical
packages made from temperature-sensitive fi bre-based
materials. It was also demonstrated that these coatings
may have relatively high seal strengths when sealed
against LDPE coatings or themselves. In addition,
ALD-grown Al2O3 coating did not significantly reduce the
degradability of biopolymercoated boards in composting
conditions.
| Original language | English |
|---|---|
| Title of host publication | Industrial biomaterials |
| Subtitle of host publication | Research highlights |
| Publisher | VTT Technical Research Centre of Finland |
| Pages | 67 - 71 |
| Publication status | Published - 2011 |
| MoE publication type | D2 Article in professional manuals or guides or professional information systems or text book material |